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Geology faculty

Geology

Faculty + Staff

The difference is the people

When our graduates talk about their experiences at UW-Eau Claire, they have lots to say about their studies—the classes, the unparalleled field-based curriculum, the collaborative research. But what every Blugold comes back to as the single most significant factor on their education here is the people, the expert faculty who guided them  through the program, supporting not only their studies but their entire student experience. 

The Department of Geology faculty members are all experts in their fields and go above and beyond in their fostering of undergraduate research. With a diversity of specialties from structural geology to geochemistry, or hydrogeology to mineralogy, Blugold students have simply the best instructors and research mentors in the business.

Scott Clark geology class

I owe a lot to the geology department; they not only stand behind their teaching & research, they stand behind their students. After completing a master's degree and 5 years in the oil industry, I can confidently say that UWEC's field geology program/experience is second to none.

Shane Peterson | Class of 2008 | Comprehensive Geology

Dr. J. Brian Mahoney receives NSF grant to study Andes Mountains

Dr. J. Brian Mahoney, professor of geology at the University of Wisconsin-Eau Claire, recently received a grant from the National Science Foundation to continue a faculty-student collaborative research in the South Central Andes Mountains.

International research

See the listings below for biographical, research and publication information for each of the outstanding geology faculty members.

Kent M. Syverson
Education
  • Ph.D., University of Wisconsin-Madison (Geology, minor distributed between civil and environmental engineering and geography)
  • M.S., University of Wisconsin-Madison (Geology)
  • B.S., University of Minnesota-Duluth (Geology, minor in chemistry)
Certification
  • Mine Safety and Health Administration (MSHA) New Miner training, 24 hours (completed 17 June 2015, updated 3/23/2016)
Teaching Interests
  • Environmental Geology
  • Geomorphology and Aerial Photograph Interpretation
  • Glacial Geology
  • Oceanography
  • Rocky Mountain Field Studies
Research Interests
  • Glacial geology and geomorphology
  • Deglaciation in areas with high relief and calving glacier margins in Alaska and Maine
  • Industrial sand mining and frac sand mining
Responsibilities
  • Chair, Dept. of Geology
  • Teach Oceanography (Geology 102)
  • Teach Geomorphology and Aerial Photography Interpretation (Geology 345)
  • Teach Glacial Geology (Geology 420)
  • Develop paid internships in industry through the Responsible Mining Initiative
Biography
UW-Eau Claire Excellence in Teaching Award, 2012

UW System Economic Development Grant ($451,317 for 2013-15) The Responsible Mining Intiative: Building an Educated STEM Workforce for the Natural Resource Industry, co-authored by Dr. J. Brian Mahoney

My current research interests involve studying the glacial geology of Wisconsin and Maine with undergraduate geology students (see publications list). Students and I have researched the history of the Driftless Area, evidence for permafrost conditions in this part of the state, the origin of the Blue Hills Felsenmeer of Rusk County (Thompson and Syverson, 2006; Hoaglund et al.,2007; Hinke and Wittkop, 2007;Orr et al., 2009;Mohr et al., 2009), and the origin of high-relief hummocky moraines and ice-walled-lake plains (Clayton etal., 2008). I also studied pre-Late Wisconsinan till units to better understand the glacial history of the western Wisconsin. The Wisconsin Geological and Natural History Survey [WGNHS] and the Chippewa County Land Conservation Department funded this project in Chippewa County, and the WGNHS published the research results as a bulletin and colored map (Syverson, 2007). I am very interested in glacial history (Syverson and Colgan, 2004, 2011) and glacial stratigraphic units. Recently served as lead editor for the State of Wisconsin glacial lithostratigraphy update published by the WGNHS (Syverson al., 2011).

Students in my upper-division courses (Geomorphology and Glacial Geology) have been involved extensively with projects to better understand the landforms in the Chippewa Moraine Ice Age National Scientific Reserve Unit near New Auburn, WI. These student projects were used by the National Park Service to develop exhibits for the Chippewa Moraine Visitor Center. These exhibits are worth a special visit to the Visitor Center (Chippewa County Hwy. M east of New Auburn). My research students also have produced geologic interpretive guides for the Ice Age National Scenic Trail in the Chippewa Moraine (Syverson et al., 2005) and in the Straight Lake State Park area of Polk County (Freeman et al., 2012a,b).

My glacial geologic research in Maine has been supported by the Maine Geological Survey. Students and I have studied striations (scratches on the bedrock surface formed parallel to the flow directionas the glacier drags rocks across the bedrock) in Maine as evidence for major ice-flow direction changes (Syverson and Greve, 2003;Syverson and Thompson, 2008;Syverson and Olson, 2011). Ice-flow directions were increasingly deflected by a calving glacial margin in the Penobscot River valley (Syverson and Thompson, 2008;Syverson and Olson, 2011) and 200- to 400-m-high bedrock "bumps" at the base of the glacier as the ice thinned, a situation similar to my Ph.D. study area in Glacier Bay, AK. Students and I also have investigated glacial-marine sediment in the China Lake and Bangor regions in southern Maine (Syverson and Mans, 2005;Syverson and Thompson, 2008). Heavy glacier ice during the Ice Age caused the land surface to sink, and the ocean flooded the depressed land surface as the glacier ice melted.

Since 2009 I have become very interested in the geology of frac sand deposits in the State of Wisconsin (see a video of my frac sand geology seminar presented on 2/17/2012). Frac sand, used enhance recovery in the oil and natural gas industry, is becoming a major industry in western Wisconsin. I have done consulting in the sand industry, and this has led to a research project studying the mineralogy of sandstone cements (Haas et al., 2014). This has important implications for the composition of airborne dust particles. Research projects and our field-based geology program are preparing our students for jobs in the industrial sand industry. These activities also laid the foundation for the Responsible Mining Initiative Economic Development Incentive Grant in 2013 ($451,000) to provide more scholarships and paid internship experiences for geology majors. 
Invited Lectures:
Frac Sand Supply &Logistics Conference, 4th annual conference, Sept. 24-25, 2015, invited lecture entitled The Responsible Mining Initiative, presented in San Antonio, TX.

Geological Society of Minnesota, April 6, 2015, invited lecture entitled Industrial Sand Mining in Wisconsin – Geology and Controversies, presented at the University of Minnesota-Twin Cities.

Society for Mining, Metallurgy, and Exploration (SME) Minnesota Annual Conference, April 22-23, 2014, Duluth, MN. Talk with co-author J. Brian Mahoney entitled: Developing a new Responsible Mining program in Geology at UW-Eau Claire.

University of Minnesota-Duluth, Dept. of Geological Sciences, February 6, 2014, invited lecture entitled The Frac Sand Mining Boom in the State of Wisconsin -Geology and Controversies, presented at Duluth, Minnesota.

Silica Sand &Construction Aggregate Resources of the Upper Midwest, September 16, 2013, workshop sponsored by the Society for Mining, Metallurgy, and Exploration (SME) Twin Cities Section.Talk entitled: Mineable resources in Wisconsin – from iron ore and volcanogenic massive sulfides to glacial outwash and frac sand: An overview.
Lorilie M. Steinke
Responsibilities

I am the person to talk to for program information, scheduling, visiting, accounting, and just about anything else that goes on in the Department of Geology.

Scott K. Clark
Education
  • Ph.D., University of Illinois at Urbana-Champaign (Geology)
  • M.S., University of Iowa (Geology)
  • B.S., University of Kansas (Geology)
Research Interests
  • Persistence of alternative conceptions across the expert-novice continuum
  • Communication of scientific concepts by instructors and the news media
  • Evolution of climate scientists' perspectives
  • Isotopic fractionation of selenium in natural environments
Selected Publications

Journal Manuscripts

Perrault, E.K. and Clark, S.K. (accepted) Sustainability Attitudes and Behavioral Motivations of College Students: Testing the Extended Parallel Process Model. International Journal of Sustainability in Higher Education.

Perrault, E.K. and Clark, S.K. (2017) Sustainability in the university student's mind: Are university endorsements, financial support, and programs making a difference? Journal of Geoscience Education. 65 (2), 194-202.

*Her, X., *Buelow, E.K., and Clark, S.K. (2015) Factors Influencing Non-Expert Term Usage During a Disaster: An Analysis of the 2004 Indian Ocean Tsunami. Geosphere. 11(6), 1680-1688, doi:10.1130/GES01170.1.

Zhu, J-M, Johnson, T.M., Clark, S.K., Zhu, X-K., and Wang, X-L. (2014) Selenium redox cycling during weathering of Se-rich shales: A selenium isotope study. Geochimica et Cosmochimica Acta. 126, 228-249, doi: http://dx.doi.org/10.1016/j.gca.2013.11.004.

LaDue, N.D. and Clark, S.K. (2012) Educator Perspectives on Earth System Science Literacy: Challenges and Priorities. Journal of Geoscience Education. 60(4), 372-383, doi:http://dx.doi.org/10.5408/11-253.1.

Momsen, J.L., Clark, S.K., Doherty, J.H., Haudek, K.C., Schramm, J.W., Ward, E.M.G. (2012) Lost in translation: Quantifying the overlap of popular media and non-majors science course assessment vocabulary. Ecosphere. 3(5): 43, http://dx.doi.org/10.1890/ES11-00311.1

Clark, S.K., Libarkin, J.C., Kortz, K.M., and *Jordan, S.C. (2011) Alternative Conceptions of Plate Tectonics held by Nonscience Undergraduates. Journal of Geoscience Education. 59(4), 251-262, doi:http://dx.doi.org/10.5408/1.3651696. (Received the 2012 Outstanding Paper Award from the Journal of Geoscience Education)

Kortz, K., Clark, S. K., Gray, K., Smay, J., *Viveiros, B., and Steer, D. (2011) Counting tectonic plates: A mixed-methods study of college student conceptions of plates and boundaries. In A. Feig &A. Stokes (eds.) Qualitative Inquiry in Geoscience Education Research (pp. 171-188). Boulder, CO: Geological Society of America Special Paper 474, doi:http://dx.doi.org/10.1130/2011.2474(12).

Clark, S. K. and Libarkin, J.C. (2011) Designing a mixed-methods research instrument and scoring rubric to investigate individuals' conceptions of plate tectonics. In A. Feig &A. Stokes (eds.) Qualitative Inquiry in Geoscience Education Research (pp. 81-96). Boulder, CO: Geological Society of America Special Paper 474, doi:http://dx.doi.org/10.1130/2011.2474(07).

Clark S.K. and Johnson T.M. (2010) Selenium stable isotope investigation into selenium biogeochemical cycling in a lacustrine environment: Sweitzer Lake, CO. Journal of Environmental Quality. 39(6), 2200-2210, doi:http://dx.doi.org/10.2134/jeq2009.0380.

Clark S.K. (2010) Forum –A shift in scientific literacy: Earthquakes generate tsunamis. Eos Trans. AGU. 91(36), 316, doi:10.1029/2010EO360004, .

Clark, S.K., Sibley, D., Libarkin, J.C., and Heidemann, M. (2009) A novel method to teaching and understanding transformations of matter in dynamic Earth systems. Journal of Geoscience Education. 57(4), 233-241, doi:http://dx.doi.org/10.5408/1.3544274.

Clark, S.K. (2009) A brief note on misconceptions regarding the candle-and-tumbler experiment. Journal of Geoscience Education. 57(2), 99-100, doi:http://dx.doi.org/10.5408/1.3544258. (Editorially reviewed)

Zhu J-M, Johnson T. M., Clark S. K., and Zhu X-K. (2008) High precision measurement of selenium isotopic composition by hydride generation multiple collector inductively coupled plasma mass spectrometry (HG-MC-ICP-MS) with a 74Se–77Se double spike. Chinese Journal of Analytical Chemistry, 36(10), 1385-1390, doi:http://dx.doi.org/10.1016/S1872-2040(08)60075-4.

Clark, S. K., and Johnson, T. M. (2008) Effective isotopic fractionation factors for solute removal by reactive sediments: A laboratory microcosm and slurry study. Environmental Science &Technology. 42(21), 7850-7855, doi:http://dx.doi.org/10.1021/es801814v.

Clark, S. K., Reagan, M. K., and Trimble, D. A. (2006) Tephra deposits for the past 2,600 years from Irazú volcano, Costa Rica. In W. I. Rose, G. J. S. Bluth, M. J. Carr, J. Ewert, L. C. Patino &J. Vallance (Eds.), Volcanic Hazards in Central America (pp. 225-234). Boulder, CO: Geological Society of America Special Paper 412, doi:http://dx.doi.org/10.1130/2006.2412(12).

* Student author

Professional Conference Abstracts

Clark, S.K. and Perrault, E.K. (2016) Insights Into University Students' Sustainability Knowledge and Attitudes: From Natural Resource Extraction to Renewable Energy Generation. Geological Society of America Abstracts with Programs, 48(7), ###, doi: 10.1130/abs/2016AM-285227.

*Lassa, M.J. and Clark, S.K. (2015) Expert Opinions in the Media: Analysis of Climate Scientists' Evolving Stances on Climate Change. Geological Society of America Abstracts with Programs, 47(7), 748.

*Lassa, M.J. and Clark, S.K. (2015) Understanding people's knowledge and perceptions of the silica sand mining industry in Wisconsin. Geological Society of America Abstracts with Programs, 47(5), 30.

*Buelow, E.K., *Her, X., and Clark, S.K. (2013) Scientists as Media Resources in the Aftermath of Disasters: Trends in News Coverage Following Two Devastating Tsunamis. Geological Society of America Abstracts with Programs, 45(7), 381.

Clark, S.K., *Holm, A.L., and Momsen, J.L. (2013) The Role of Extreme Weather in the Media's Attention to Climate Change. Geological Society of America Abstracts with Programs, 45(7), 506.

*Her, X., *Buelow, E.K., and Clark, S.K. (2013) The Role of Proximity in How Individuals Describe Natural Disasters: Analysis of the 2004 Indian Ocean Tsunami.Geological Society of America Abstracts with Programs, 45(7), 594.

*Smith, J.H., Freund, D.A., and Clark, S.K. (2013) The Charles Darwin Research Station, Galápagos: Recommendations for Improving Financial Stability Through Public Outreach.Geological Society of America Abstracts with Programs, 45(7), 594.

Clark, S.K., *Her, X., and *Buelow, E.K. (2012) How the 2004 Indian Ocean tsunami went from being a tidal wave to a tsunami and what this means for science literacy. Geological Society of America Abstracts with Programs, 44(7), 470.

Clark, S.K., Thomas, S.R., *Haas, B.J., and Libarkin, J.C. (2011) Improving Communication of Geologic Concepts Through Effective Information Design. Geological Society of America Abstracts with Programs, 43(5), 534.

LaDue, N., and Clark, S.K. (2010) Earth Science Literacy: K-12 Teacher and Geoscience Professor Perspectives. Geological Society of America Abstracts with Programs, 42(5), 24.

Libarkin, J., Clark, S.K., and Simmon, R. (2010) The color of confusion in an expert world. Geological Society of America Abstracts with Programs, 42(5), 58.

Momsen, J.L., Clark, S.K., Haudek, K., Geraghty Ward, E., Schramm, J.W., Doherty, J.H., and Vergara, C. (2010) Lost in translation: Quantifying the Overlap of Popular Media and Non-Majors Science Course Assessment Vocabulary. Ecological Society of America. National Meeting.

Clark, S.K. (2009) The role of image design in communicating the plate tectonic model. Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract ED51A-0516.

LaDue, N., Clark, S.K., Thompson, J., Beckendorf, K., and Wysession, M. (2009) The (mis)Alignment of the Earth Science Literacy Principles to the National Science Education Standards. Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract ED33A-0552.

Kortz, K.M., Smay, J.J., Mattera, A.V., and Clark, S.K. (2009) Reducing Plate Tectonic Misconceptions with Lecture Tutorials. Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract ED23A-0543.

Duggan-Haas, D., and Clark, S.K. (2009) Forest for the Trees: Earth Systems Science Literacy Initiatives and the Need for a Smaller Integrated Set of Principles (invited).Geological Society of America Abstracts with Programs, 41(7), 712.

Clark, S.K. (2009) Plate tectonics as viewed by novices and experts. Geological Society of America Abstracts with Programs, 41(7), 251.

*Jordan, S.C., Libarkin, J.C., and Clark, S.K. (2009) Too much, too little, or just right? An investigation of confidence, demographics, and correctness. Geological Society of America Abstracts with Programs, 41(7), 667.

Libarkin, J.C., Asghar, A., Clark, S.K. (presenter), Elkins, J.T., and Stokes, A.J. (2009) Communicating across paradigms: Boundary-crossing in an interdisciplinary world. Physics Education Research Conference (PERC 2009 –Ann Arbor, MI.)

Clark, S.K., Heidemann, M., Libarkin, J., and Sibley, D. (2008) A novel conceptual methodology for teaching and learning dynamic processes in the geological sciences. Geological Society of America Abstracts with Programs, 40(6), 214.

Clark, S.K. and Libarkin, J. (2008) Post-instruction alternative conceptions about plate tectonics held by non-science majors. Geological Society of America Abstracts with Programs, 40(6), 364.

King, H., Stokes, A., Libarkin, J., and Clark, S.K. (2008) The emerging field of geocognition. Geological Society of America Abstracts with Programs, 40(6), 418.

Libarkin, J., and Clark, S.K. (2008) The relationship between students' confidence and conceptual understanding of plate tectonics. Geological Society of America Abstracts with Programs, 40(6), 419.

*Rossman, S., Libarkin, J., and Clark, S.K. (2008) Missing connections in student conceptions of global change. Geological Society of America Abstracts with Programs, 40(6), 214.

Zhu, J., Johnson, T.M., and Clark, S.K. (2008) Selenium isotope variations in weathering zones of Se-rich carbonaceous rocks at Yutangba, China. Geochimica et Cosmochimica Acta, 72(12), Supplement 1, A1102.

Zhu, J., Johnson, T.M., and Clark, S.K. (2007) Selenium enrichment in weathering zones: Se isotopes at Yutangba, China. Eos Trans., AGU, 88(52), Fall Meeting Supplement, Abstract H41J-06.

Clark S.K. and Johnson T.M. (2007) Stable isotopes as indicators of contaminant reduction by wetland sediments: Effective fractionation factors and the role of diffusion. The 233rd American Chemical Society National Meeting. Chicago, IL, March 25, 2007.

Clark, S.K. and Midden, C.J. (2006) Earthquakes and you: Making Earth science relevant to 5th graders. Geological Society of America Abstracts with Programs, 38(7), 154.

Clark S.K. and Johnson T.M. (2004) Isotopic Fractionation of Selenium Oxyanions in Wetlands, Eos Trans. AGU, 85(17), Jt. Assem. Suppl., Abstract B41B-06.

* Student author



Phillip D. Ihinger
Education
  • Ph.D., Geology, California Institute of Technology, Geology
  • M.S. California Institute of Technology, Geochemistry
  • B.A., Pomona College, Geology
Teaching Interests
  • Earth Resources
  • Global Environmental Change
  • Mineralogy &Petrology I, II, &III
  • Physical Geology
Research Interests

My research agenda focuses on three programs: (1) the theoretical and analytical study of hot-spot magmas in the oceanic and continental environment, (2) the experimental and analytical study of the role of volatiles in magmatic processes, and (3) the role of water in nominally anhydrous minerals, with emphasis on hydrous impurities in quartz crystals and how they can be used to study the process of crystal growth from hydrothermal solutions. Here, I briefly introduce these programs and provide a summary of their accomplishments.

I. Theoretical and analytical studies of hot-spot magmas: This program is devoted to understanding mantle plumes and interpreting the physical and chemical constraints that hot spots provide regarding the structure and evolution of the mantle. This work has resulted in a new model for the evolution of hot spot magmatism. My model is based on previously unexplained observations of Hawaiian volcanism, including the segregation of the hot-spot track into well-defined volcano lineaments. Individual chains of volcanoes along the Hawaiian track show faster age progression within each chain compared to the average propagation rate of the Pacific plate. Additionally, the two youngest chains (each with well-sampled volcanoes) show age-progressive trends in their geochemistry. The new model invokes the segregation of the upwelling plume into discrete blobs that arise from shear created by flow in the mantle. The model is substantiated by numerous experimental and theoretical studies in the earth science literature, and if it is correct, it requires that we change our paradigm regarding the nature of mantle convection, the driving force of plate tectonics, and the chemical evolution of the mantle.

To test this model, I have undertaken comprehensive studies of plume-related magmatism within the continental setting, where sampling between and within individual lineaments is possible. I have selected two field areas for geochemical characterization;the Cretaceous New England Lamprophyre Suite, and the Eocene Montana Alkaline Province. The New England Suite is a part of an elongate alkaline magmatic province that trends in time and space from the interior of the Canadian craton across the mid-Atlantic ridge. In the oceanic setting, the volcanic lineament is known as the New England Seamount Chain, which tracks across the floor of the Atlantic Ocean to the active Great Meteor Hotspot. Within the continental setting in New England, three distinct east-west lineaments are discernable. Our study has characterized the geochemical fingerprint of this continental alkaline lamprophyre province and matches it with the geochemical signature of the seamounts. Linking the continental alkaline magmatism to hot-spot origins has profound new implications for our understanding of the origin of intraplate alkaline lamprophyres and their cousins, the kimberlites and carbonatites. We are continuing the study of these rocks in order to compare the chemical and age progressions along each of the three magmatic lineaments within the New England province with the observations along the Hawaiian volcano trends.

Not all alkaline igneous provinces are associated with age-progressive lineations. Since coming to UW-Eau Claire, my students and I have begun to characterize the nature and chemistry of the Eocene high-K magmatic province in central Montana. No simple theory for the origin of these peculiar rocks can explain the vast production of mantle-derived material under the North American craton at that time. In collaboration with UW-Eau Claire students Luke Beranek, Jesse Bernhardt, Benjamin Paulson, and James Watkins, we hope to compare and contrast these two seemingly disparate magmatic provinces with the aim of furthering our understanding of melt production under an otherwise tectonically-stable craton.

II. Experimental and analytical studies on the role of volatiles in magmatic processes: The second program in my research agenda involves the experimental and analytical study of volatiles in minerals and melts. This topic is important to every aspect of earth science, as it is central to the understanding of the origin and evolution of the Earth's oceans and atmosphere, as well as global change on both the shortest time scales (e.g., the immediate effect of volcanic eruptions on the Earth's temperature) and on the longest time scales (e.g., the dependence of volcanic input on the global cycles of H, C, and S). The volatile contents of natural magmas show tremendous variability throughout magmatic evolution. As such, volatile content variability is the most important control on source melting temperature, on magma rheology during transport through the crust, on the kinetics of crystallization, and on the explosivity of eruption. Simply put, volatiles control the origin, the evolution, and the fate of every natural magma and thus control the chemical differentiation of the Earth.

Some of the contributions of this aspect of my program to date include:

  1. The first experimental study to determine quantitatively the effect of water on the kinetics of homogeneous crystal nucleation in silicate melt, and the discovery that this effect exhibits universal behavior such that we can accurately predict the number of crystals that will nucleate after any prescribed time from a melt of any prescribed hydroxyl content.
  2. The discovery that crystals can nucleate on bubbles in silicate melt, with implications for the development of groundmass texture in shallow intrusive rocks. This study resulted in a patent for the development of ceramics with prescribed crystallinities with potentially lucrative industrial applications.
  3. The determination of the effect of cooling rate on homogeneous crystal nucleation in silicate melt. This study allows us to explore the degree of crystallinity expected for silicate magmas as they rise through the crust and erupt on the earth's surface.
  4. The first determination of the effect of water on the time scales required for the relaxation of silicate melt to its equilibrium structural configuration. This study gives insights into melt behavior and allows us to measure the time scales associated with magmatic processes that occur during intrusion and eruption.
  5. The first observation of correlated carbon isotopic composition and CO2 concentration in a natural suite of igneous rocks (the Cretaceous New England lamprophyres). This study depicts the degassing history of the alkaline magmatic system and constrains the fractionation factor that governs melt-vapor carbon isotope partitioning in the CO2-saturated magmatic system.
  6. The first measurement of the hydrogen isotopic composition of water-bearing nominally anhydrous minerals from the mantle. These results offer a new view into the nature and evolution of global hydrogen reservoirs.

These contributions represent collaborative efforts with my students: (1) - (4) represent the dissertation and post-doctoral work of Mark Davis (Yale PhD, 97);and (5) - (6) represent the dissertation work of Shona Smith (Yale PhD, 00), and collaborations with undergraduate students Ken Andersen (Yale 95), and Matt Jackson (Yale 00).

III. Water in nominally anhydrous minerals and crystal growth kinetics of hydrothermal quartz: In collaboration with undergraduate students Steve Zink (Yale, 96) and An-Lin Bardin (Yale, 97), we have undertaken a detailed study of the distribution and abundance of hydrous impurities in natural quartz crystals. We have discovered that the molecular water concentration incorporated in a growing crystal face serves as a growth speedometer by recording the relative growth rates in the quartz crystal. Remarkably, we have seen that two crystal faces that grew from the same fluid at the same time on the same crystal actually grew at order-of-magnitude differences in rates. This phenomenon leads to what is commonly termed "sector zoning". Our study quantifies the growth rates experienced by individual growth faces. In addition, we discovered that our IR measurements on Li-OH and Al-OH concentrations in these quartz crystals enable us to follow the changing Al and Li concentration in the fluids from which they grew, and additionally constrain the post-crystallization thermal histories that our natural samples had experienced. Our work was recently featured on the cover of Nature:

Ihinger, P. D., and Zink, S. I. (2000) Determination of relative growth rates of natural quartz crystals, Nature, 404, p. 865-869.

With recently acquired NSF funding, we will calibrate our "water speedometer" by measuring the water contents of crystals grown in controlled environments at known rates. UW -Eau Claire students Jacob Chmielowiec and Ryan Prechel will analyze synthetic quartz samples (provided by Thermo Dynamics, Inc. of Merriam, Kansas) with precisely known growth rates. We will additionally perform diffusion experiments to constrain the parameters that control H-OH, Li-OH, and Al-OH mobility within the crystals after they have grown in order to constrain the thermal histories of quartz crystals in the natural environment that show measured diffusion profiles.

Publications
Ihinger, P. D., and Stolper, E. M. (1986) The color of meteoritic hibonite: An indicator of oxygen fugacity. Earth and Planetary Science Letters, v. 78, p. 68-79.

Silver, L. A., Ihinger, P. D., and Stolper, E. M. (1989) The influence of bulk composition on the speciation of water in silicate glasses. Contribution to Mineralogy and Petrology, v. 104, p. 142-162.

Ihinger, P. D., Hervig, R. L., and McMillan, P. F. (1994) Analytical methods for volatiles in glasses. Reviews in Mineralogy, v. 30, p. 67-121.

Bell, D., Ihinger, P. D., and Rossman, G. (1995) Quantitative Analyses of Trace Hydroxyl in Garnet and Pyroxenes. American Mineralogist, v. 80, p. 465-474.

Zhang, Y., Stolper, E. M., and Ihinger, P. D. (1995) Kinetics of reaction H2O + O = 2OH in rhyolitic glasses: Preliminary results. American Mineralogist, v. 80, p. 593-612.

Ihinger, P. D. (1995) Mantle flow beneath the Pacific plate: Evidence from seamount segments in the Hawaiian-Emperor chain. American Journal of Science, v. 295, p. 1035-1057.

Davis, M. J., Ihinger, P. D., and Lasaga, A. C. (1997), The influence of water on nucleation kinetics in silicate melt, Journal of Non-Crystalline Solids, v. 219, p. 62-69.

Zhang, Y., Belcher, R., Ihinger, P. D., Wang, L., Xu, Z., and Newman, S. (1997), New calibration of infrared measurement of dissolved water in rhyolitic glasses, Geochimica et Cosmochimica Acta, v. 61, p. 3089-3100.

Davis, M. J., and Ihinger, P. D. (1998), Heterogeneous crystal nucleation on bubbles in silicate melt: American Mineralogist, v. 83, p. 1008-1015.

Davis, M. J., and Ihinger, P. D. (1999), New controlled rapid quench technique in a 1-atm infrared image furnace: American Mineralogist, v. 84, p. 48-54.

Davis, M. J., and Ihinger, P. D., (1999), Influence of hydroxyl on glass transformation kinetics in lithium disilicate silicate melt and a re-evaluation of structural relaxation in NBS 710 and 711, Journal of Non-Crystalline Solids, v. 244, p. 1-15.

Ihinger, P. D., Zhang, Y., and Stolper, E. M. (1999) The speciation of dissolved water in rhyolitic melt. Geochimica et Cosmochimica Acta, v. 63, p. 3567-3578.

Smith, S. C., and Ihinger, P. D., (1999) Origin and evolution of mafic alkaline magmas: constraints from the mineral chemistry of the New England lamprophyre suite, in The P.H. Nixon Volume, eds. Gurney, J. J., Gurney, J. L., Pascoe, M.D., and Richardson, S. H., p. 795-807.

Bell, D.R., and Ihinger, P.D. (2000) The isotopic composition of hydrogen in nominally anhydrous minerals. Geochimica Cosmochimica et Acta, v. 64, p. 2109-2118.

Ihinger, P.D., and Zink, S. (2000) Determination of relative growth rates of natural quartz crystals. Nature, v. 404, p. 865-869.

Ihinger, P.D., and Zink S. (2001) Control of defect concentrations in single crystals: insights from natural hydrothermal quartz crystals, in Inorganic Optical Materials III, A. J. Marker III, M. J. Davis, eds., Proceedings of SPIE, Vol. 4452, p. 7-16.

Davis, M. J., and Ihinger, P. D. (2002) Effect of thermal history on crystal nucleation in silicate melt I. Experimental results, Journal of Geophysical Research, in press.

Abstracts
Ihinger, P. D., Stolper, E. M., and Epstein, S. (1990) Hydrogen isotope fractionation between rhyolitic melt and hydrous vapor at 850°C. In V.M. Goldschmidt Conf Program and Abstracts II, p. 55.

Zhang, Y., Stolper, E. M., and Ihinger, P. D. (1990) Reaction Kinetics of H2O + O = 2OH and its equilibrium, revisited. In V.M. Goldschmidt Conf Program and Abstracts II, p. 94.

Ihinger, P. D., and Bell, D. R. (1991) Isotopic composition of hydrogen in nominally anhydrous mantle minerals, EOS Trans. AGU, Fall Meeting Suppl., p. 537.

Bell, D. R., Rossman, G. R., and Ihinger, P. D. (1991) Hydroxyl in upper mantle minerals, EOS Trans. AGU, Fall Meeting Suppl., p. 537.

Watson L. L., Ihinger P. D., Epstein S., and Stolper E. M. (1991) Hydrogen, carbon, and oxygen isotopic composition of volatiles in Nakhla, Lunar and Planet. Sci. XXII, Lunar and Planetary Institute, Houston, p.1473-1474.

Ihinger, P. D. (1992) Evolution of global hydrogen reservoirs: Isotopic constraints from water-bearing, nominally anhydrous mantle minerals, EOS Trans. AGU, Spring Meeting Suppl., p. 141.

Ihinger, P. D. (1993) Mantle flow beneath the oceanic lithosphere: Evidence from individual en echelon seamount segments along hot-spot tracks, EOS Trans. AGU, Spring Meeting Suppl., p. 598.

Ihinger, P. D. (1993) Mantle flow beneath the Pacific Plate: Evidence from seamount segments in the Hawaiian-Emperor Chain, GSA Annual Mtg. Suppl, Abstracts with Programs, Vol. 25, No. 6, p. A-197.

Newman, S., Blouke, K., Bashir, N., Ihinger, P. D., and Stolper, E. (1993) Cooling of rhyolitic volcanics-evidence from melt inclusions, GSA Annual Mtg. Suppl, Abstracts with Programs, Vol. 25, No. 6, p. A-43.

Davis, M. J., Lasaga, A. C., and Ihinger, P. D. (1993) Significant T-t hysteresis of the nucleation rate of lithium disilicate--melt speciation kinetics? EOS Trans. AGU, Fall Meetng Suppl., p. 630.

Ihinger, P. D. (1994) A "plumelet" model for the generation of en echelon patterns along hot-spot tracks, EOS Trans. AGU, Fall Meeting Suppl., p. 726.

Davis, M. J., and Ihinger, P. D. (1994) The effect of thermal history on homogeneous nucleation in silicate melt. EOS Trans. AGU, Fall Meetng Suppl., p. 702.

Ihinger, P. D., and Andersen, K. M. (1995) A "plumelet" model for the generation of New England lamprophyres. NEGSA Annual Mtg. Suppl, Abstracts with Programs, Vol. 27, No. 1, p. A-57.

Zhang, Y., Belcher, R., and Ihinger, P. D., (1995) Calibration of IR measurement of water in glasses: Absorptivities, EOS Trans. AGU, Spring Meeting Suppl., p. F650.

Davis, M. J., and Ihinger, P. D. (1995) The effect of water on crystal nucleation in lithium disilicate melt, EOS Trans. AGU, Fall Meeting Suppl.

Davis, M. J. and Ihinger, P. D. (1996) Crystal nucleation on bubbles in hydrous silicate melt, EOS Trans. AGU, 77(46), Fall Meeting Suppl., p F819.

Bonneville, A., Davaille, A., and Ihinger, P. D. (1997) Viscous Fingering and Double Hotspots. EUG Abstracts with Programs.

Davis, M. J. and Ihinger, P. D. (1997) The influence of water on crystal growth rates in silicate melt, EOS Trans. AGU, 78(46), Fall Meeting Suppl., p F834.

Smith, S. and Ihinger, P. D. (1997) Volatile evolution in mafic alkaline rocks: A stable isotopic study of the New England Lamprophyre suite, EOS Trans. AGU, 78(46), Fall Meeting Suppl., p F813.

Zink, S., and Ihinger, P. D. (1997) Microscopic IR investigation of water in gemmy quartz crystals: growth histories revealed, GSA Abstracts with Programs, p. A91.

Smith, S. C., and Ihinger, P. D., (1998) Geochemical evolution of the New England lamprophyre suite: a hotspot signature preserved in the continental crust?, Abstracts of the VII International Kimberlite Conference, V. 7, p. 820-822.

Ihinger, P. D., and Smith, S. C. (1998) Deuteric processes in mafic alkaline rocks: distinguishing mantle from crustal-derived volatiles in the New England Lamprophyre Suite, EOS Trans. AGU, 79(46), Fall Meeting Suppl., p. F979.

Davis, M. J., Ihinger, P. D., (1998), Influence of water on glass transformation kinetics in lithium disilicate melt, submitted EOS Trans. AGU, 79(46), Fall Meeting Suppl., p. F1017.

Gazis, C., and Ihinger, P. D., (1999), Stable isotopic compositions and H2O concentrations of rhyolitic glasses from the Chegem Caldera (Caucuses Mountains, Russia), GSA Annual Mtg. Suppl, Abstracts with Programs.

Ihinger, P. D., and Smith, S. C. (1999) The role of volatiles in the origin and evolution of mafic alkaline rocks, EOS Trans. AGU, 80(46), Fall Meeting Suppl, p. F1133.

Ihinger, P. D., Woglom, E., &Skorina, L., (2000) Experimental Results Bearing on Hydroxyl Sub-Speciation in Low-Pressure Silicate Melts, EOS.

Jackson, M. G., and Ihinger, P.D. (2000) Carbonatite expulsion from a lamprophyre: an integrated geochemical study of dike-wall rock interactions, GSA Abstracts with Programs, V. 32, no. 7, p. A436.

Ihinger, P. D., Chamberlin, S., and Smith, S. C. (2002) INORGANIC TERRESTRIAL ANALOG FOR CARBONATE-MAGNETITE-PYRITE ASSEMBLAGE IN ALH-84001, Lunar and Planet. Sci. XXXIII, Lunar and Planetary Institute, Houston, in press.

Robert L. Hooper
Education
  • Ph.D., Washington State University (Geology)
  • M.S., Washington State University (Geology)
  • B.S., Michigan State University (Geology)
Research Interests
  • Environmental geochemistry
  • Nanoparticles in natural systems (air, water and soil)
Selected publications

Mahoney, J.B., Haggart, J.W., Hooper, R.L., Snyder, L.D., and Woodsworth, G.J.,and Freidman,R.M., 2007, New geolgocial mapping and implications for mineralization potential in the southern and western Whitesail Lake map area (NTS 093E), Southwestern British Columbia. British Columbia Ministry of Energy and Mines, Geological Field Work 2007, Paper 2007-1,p. 341-353.

Mahoney, J.B., Haggart, J.W., Hooper, R.L., Snyder, L.D., Woodsworth, G.J. and Friedman, R.M, 2007, New geological mapping and implications for mineralization potential in the southern and western Whitesail Lake map area, southwestern British Columbia;in Geological Fieldwork 2006, British Columbia Ministry of Energy and Mines, Paper 2007-1, p. 341-354. 

Haus, K.L., Hooper, R.L., Strumness, L.A., and Mahoney, J.B., 2009, Analysis of arsenic speciation in mine contaminated sediment using selective sequential extraction, HR-ICPMS and TEM, Applied Geochemistry,v.23, n.4, p 692-704. 

Jean M. Morrison, Martin B. Goldhaber, Christopher T. Mills, George N. Breit, Robert L. Hooper, JoAnn M. Holloway, Sharon F. Diehl and James F. Ranville, 2015, Transport and Weathering of chromium and nickel from serpentinite in the Coast Range Ophiolite to the Sacramento Valley, California, USA, Applied Geochemistry, v.61, p. 72-86.

Mahoney, J.B., Hooper, R.L., Gordee, S.M., Haggart, J.W. and Mortenson, J.K., 2005, Initial Evaluation of Bedrock Geology and Economic Mineralization Potential of the Southern Whitesail Lake Map Area (9202/03, west central British Columbia; in Geological Fieldwork 2004, British Columbia Ministry of Energy and Mines, Paper 2005-1,p.291-300.

Gordee, S.M., Mortenson, J.K., Mahoney, J.B., and Hooper, R.L., 2005, Volcanostratigraphy, lithogeochemistry, and U-Pb geochronology of the Upper Hazelton Group, west central British Columbia: Implications for Eskay Creek-type VMS Mineralization in the southwest Stikinia, in Geological Fieldwork 2004, British Columbia Ministry of Energy and Mines, Paper 2005-1,p. 311-322.

Balistieri, L.S., Box, S.E., Bookstrom, A.A., Hooper, R.L., and Mahoney, J.B., 2002, Impacts of Historical Mining in the Coeur d’Alene Basin: in Pathways of Metal Transfer from Mineralized Sources to Bioreceptors: A synthesis of the mineral resource program’s past environmental studies in the western United States and future research directions. U.S. Geological Survey Bulletin 2191, Chapter 6, p. 1-34.

Mahoney, J.B., Hooper, R.L. and Michael, G., 1997, Resolving Compositional Variations in Fine-grained Clastic Sediment: A Comparison of Isotopic and Mineralogical Sediment characteristics, Shikoku Basin, Philippine Sea Recent progress in shale research symposium volume, p. 177-194.

Rosenberg, P.E. and Hooper, R.L., 1997, The Effect of Chemical Pretreatments on the compositions of Natural Illites, Clays and Clay minerals. V.45, p. 486-488.

Robert Lodge
Education
  • PhD in Mineral Deposits/Precambrian Geology, Laurentian University
  • MSc in Geology, University of Western Ontario
  • BSc with Honours in Geology, Acadia University
  • BSc in Environmental Science, Acadia University
Certification
  •  Registered Professional Geoscientist (PGeo)
Research Interests
  • Synvolcanic metallogeny and tectonic reconstruction of the Penokean orogen. Research has focused on the deposit-scale interpretations of various volcanogenic massive sulfide bodies and hydrothermally-altered host rocks in the Precambrian rocks in Wisconsin.
  • Geodynamic and metallogenic reconstructions on Archean greenstone belts. Research has involved assessment of regional-scale volcanic architecture through trace element and isotopic geochemistry.
  • Petrogenesis of volcanic assemblages in Precambrian terranes. This research uses state-of-the-art analytical facilities to obtain in-situ mineral and whole-rock geochemistry to make interpretations about magmatic evolution of ancient terranes and how it influences metal deposits.
Publications

Underline = Student Collaborators

Peer-Reviewed Journals

Lodge, RWD (2016). Petrogenesis of intermediate volcanic assemblages from the Shebandowan greenstone belt, Superior Province: Evidence for subduction during the Neoarchean. Precambrian Research, 272: 150-167

Lodge, RWD, Gibson, HL, Stott, GM, Hudak, GJ, Franklin, JM (2015). Geodynamic setting, crustal architecture, and metallogeny of ca. 2720 Ma greenstone belt assemblages of the northern Wawa subprovince, Superior Province. Canadian Journal of Earth Sciences, 52: 196-214.

Lodge, RWD, Gibson, HL, Stott, GM, Hamilton, MA (2014). Geodynamic reconstruction of the Winston Lake greenstone belt and VMS deposits: New trace element geochemistry and U-Pb geochronology. Economic Geology, 109: 1291-1313.

Lodge, RWD, Gibson, HL, Stott, GM, Hudak, GJ, Jirsa, MA, Hamilton, MA (2013). New U-Pb geochronology from Timiskaming-type assemblages in the Shebandowan and Vermilion Greenstone Belts, Wawa Subprovince, Superior Craton: Implications for the Neoarchean development of the southwestern Superior Province. Precambrian Research, 235: 264-277.

Lodge, RWD, Lescinsky, DT (2009). Anisotropic stress accumulation in cooling lava flows and resulting fracture patterns: Insights from starch-water desiccation experiments, Journal of Volcanology and Geothermal Research, 185: 232-336.

Lodge, RWD, Lescinsky, DT (2009). Fracture patterns at lava-ice contacts on Kokostick Butte, OR, and Mazama Ridge, Mount Rainier, WA: Implications for flow emplacement and cooling histories. Journal of Volcanology and Geothermal Research, 185: 298-310.

Reviewed Conference Proceedings

Stanley, V., Schoephoester, P., Lodge, RWD (Submitted). Challenges for rescuing drill core from the volcanogenic massive sulfide deposits in northern Wisconsin. American Geophysical Union, Fall Meeting.

Lodge, RWD, Pignotta, GS, Gélinas, BR, Schwierske, K, Hudak, GJ (2016). Volcanological, geochemical, and geochronological comparisons of the Gafvert Lake Sequence in Minnesota and Shebandowan Assemblage in Ontario. 62st Annual Meeting of the Institute on Lake Superior Geology, Duluth, Minnesota. p. 89-90.

Helmuth, SL, Lodge, RWD (2016). A new Rusk County: Producing a new Precambrian geological map from new field observations and compilations of historic geological/geophysical datasets. 62st Annual Meeting of the Institute on Lake Superior Geology, Duluth, Minnesota. p. 62-63.

Jackson, NR, Merss, BH, Lodge, RWD (2016). Lithostratigraphy and ore petrology of the Eisenbrey Zn-Cu-Pb deposit, Rusk County, Wisconsin. 62st Annual Meeting of the Institute on Lake Superior Geology, Duluth, Minnesota. p. 70-71.

Olson, MJ, Lodge, RWD (2016). Ore petrography and precious metals of the primary Flambeau massive sulfide ore. 62st Annual Meeting of the Institute on Lake Superior Geology, Duluth, Minnesota. p. 113-114.

Zens, ZA, Lodge RWD (2016). Geochemistry and petrography of the volcanic strata hosting the Flambeau Cu-Zn-Au deposit in Rusk County, WI: A re-exmination of Wisconsin's only past-producing volcanogenic massive sulfide mine. 62st Annual Meeting of the Institute on Lake Superior Geology, Duluth, Minnesota. p. 157-158.

Lodge, RWD (2015). The importance of andesites for interpreting tectonic processes during the Archean. Geological Society of America, Abstracts with Programs, 47(5).

Essig, E, Hudak, GJ, Pignotta, GS, Lodge, RWD (2015). Petrographic analysis of felsic tuffs within the Neoarchean Soudan Member of the Ely Greenstone Formation, NE Minnesota. 61st Annual Meeting of the Institute on Lake Superior Geology, Dryden, Ontario. p. 29-30.

Lodge, RWD, Gibson, HL, Stott, GM (2015). Geodynamic settings of Archean greenstone belts and their influence on synvolcanic metallogeny: Examples from the Superior Province. Geological Society of America, Abstracts with Programs, 47(5).

Zens, ZA, Helmuth, SL, Lodge, RWD (2015). Geochemistry and petrography of the strata hosting the Flambeau Cu-Zn-Au Deposit: Revisiting Wisconsin's only past-producing volcanogenic massive sulfide mine. Geological Society of America, Abstracts with Programs, 47(5).

Lodge, RWD, Gibson, HL, Stott, GM, Hudak, GJ, Jirsa, MA (2013). Geochronology and geochemistry of Neoarchean Timiskaming-type assemblages in the Shebandowan and Vermilion greenstone belts, Wawa subprovince, Superior Craton. Geological Association of Canada - Mineralogical Association of Canada, Abstracts &Program, 36: 132.

Lodge, RWD, Gibson, HL, Stott, GM, Franklin, JM (2013). Rapid development and subsidence of a Neoarchean volcanic arc hosting the Winston Lake VMS ore bodies, Wawa subprovince, Superior Craton. Geological Association of Canada - Mineralogical Association of Canada, Abstracts &Program, 36: 131-132.

Lodge, RWD, Gibson, HL, Stott, GM (2012). Trace element geochemistry of VMS-deprived and VMS-endowed 2720 Ma greenstone belts in the Wawa Subprovince, Superior Craton. 22nd V.M. Goldschmidt Conference, Montreal. Mineralogical Magazine, 76: 2030.

Lodge, RWD, Gibson, HL, Stott, GM (2012). Trace element geochemistry and physical volcanology of the Shebandowan Greenstone Belt, Superior Craton, Canada;Implications for VMS mineralization and tectonic processes in the Neoarchean. Geological Association of Canada - Mineralogical Association of Canada, Abstracts &Program, 35: 80.

Hudak, GJ, Heine, J, Lodge, RWD, Jansen, A. (2012). Recent developments understanding the volcanic, magmatic, tectonic, and metallogenic evolution of the Ely Greenstone Formation, Vermilion District, NE Minnesota. Geological Association of Canada - Mineralogical Association of Canada, Abstracts &Program, 35: 59.

Lodge, RWD, Gibson, HL, Stott, GM (2011). Comparing the volcanology and geochemistry of the Neoarchean VMS-endowed and VMS-deprived greenstone belts in the Wawa Subprovince of the Superior Craton. Geological Society of America, Abstracts with Programs, 43(5): 489.

Lodge, RWD,Lescinsky, DT (2006). Characterization of sheet fracture patterns in polygonal-jointed lavas at Kokostick Butte, OR, and Mazama Ridge, WA: investigation and interpretation of their formation and significance. EOS Transaction, American Geophysical Union, 87(52), Fall Meeting Program, Abstract # V53C-1763.

Van Wagoner, NA, Lodge, RWD, Dadd, KA (2005). Comparative volcanology of the Silurian Passamaquoddy Bay subbelt, Maine and New Brunswick: Implications for correlation and volcanic setting. Geological Association of Canada –Mineralogical Association of Canada, Abstracts &Program, 30: 199-200.

Lodge, RWD, Van Wagoner, NA, Dadd, KA (2005). Phreatomagmatism of the Silurian Passamaquoddy Bay subbelt, Maine and New Brunswick. Atlantic Geology, 41: 70.

Lodge, RWD (2004). Volcanism of the Silurian Eastport Formation, Maine, U.S.A. Atlantic Geology, 40: 259-260.

Van Wagoner, NA, Lodge, RWD, Dadd, KA (2004). Controls on maar volcanism: Evidence from sills and dykes of the Silurian Eastport Formation. Occasional Papers of the Geological Institute of Hungary. 203: 99.

Government Publications

Hinz, S., Hollings, P., Lodge, RWD, Olson, MJ, Helmuth, SL (in press). Preliminary geology of the Bateman trenches area and macroscopic textures of the ultramafic rocks in the eastern Part of the Shebandowan greenstone belt, northwestern Ontario. Ontario Geologic Survey, Summary of Field work and Other Activities, Open File Report.

Gélinas, BR, Lodge, RWD, Gibson, HL (2016). Characterization of the Mineralization and Alteration at Tower Mountain, Conmee Township, Shebandowan Greenstone Belt, Ontario Ontario Geological Survey, Miscellaneous Release - Data 330

Lodge, RWD (2015). Geochemistry of Neoarchean volcanic and intrusive rocks in Aldina Township, northwestern Ontario. Ontario Geological Survey, Miscellaneous Release –Data 315.

Lodge, RWD (2014). Precambrian geology of Aldina Township. Ontario Geological Survey, Preliminary Map 3776, scale 1:20,000.

Lodge, RWD, Ratcliffe, LM, Walker, JA (2014). Geology and Mineral Potential of Sackville and Conmee Townships, Wawa Subprovince. Ontario Geological Survey, Summary of Field Work and Other Activities, Open File Report 6300, pp. 9-1 to 9-17.

Lodge, RWD (2013). Geology and mineral potential of Aldina Township, Wawa Subprovince. Ontario Geological Survey, Summary of Field Work and Other Activities, Open File Report 6290, pp. 6-1 to 6-13.

Lodge, RWD, Chartrand, JE (2013). Establishing regional geodynamic settings and the metallogeny of volcanogenic massive sulphide mineralization of greenstone belt assemblages (circa 2720 Ma) of the Wawa Subprovince via geochemical comparisons. Ontario Geological Survey, Miscellanous Release –Data 306.

Lodge, RWD (2012). Preliminary results of uranium–lead geochronology from the Shebandowan Greenstone Belt, Wawa Subprovince. Ontario Geological Survey, Summary of Field Work and Other Activities, Open File Report 6280, pp. 10-1 to 10-10.

Lodge, RWD (2012). Winston Lake and Manitouwadge revisited: Modern views of two volcanogenic massive sulphide (VMS)-endowed greenstone belts: A field trip guidebook. Ontario Geological Survey, Open File Report 6282, 37 p.

Berger, BR, Lodge, RWD (2012). Report on geochronology for the south of Gogama area. Ontario Geological Survey, Summary of Field Work and Other Activities, Open File Report 6280, pp. 4-1 to 4-10.

Lewis, D, Kamo, SL, Lodge, RWD (2012). New geochemical and geochronological results from the Rowan Lake area, northwestern Ontario. Ontario Geological Survey, Summary of Field Work and Other Activities, Open File Report 6280, pp. 9-1 to 9-10.

Lodge, RWD (2011). A progress report on the volcanology, stratigraphy and geodynamic setting of greenstone belts of age 2720 Ma near the Wawa–Quetico Subprovincial boundary. Ontario Geological Survey, Summary of Field Work and Other Activities, Open File Report 6270, pp. 11-1 to 11-13.

Lodge, RWD (2010). Volcanology and lithofacies of the Shebandowan Greenstone Belt, Wawa Subprovince. Ontario Geological Survey, Summary of Field Work and Other Activities, Open File Report 6260, pp. 16-1 to 16-22.


 

Responsibilities
  • Teaching: Physical Geology, Structural Geology, Economic Geology
Biography

My ongoing research is divided into two broadly defined projects. My most active area of research is focused on the geodynamic and metallogenic reconstructions of greenstone belt assemblages in northwestern Ontario and Minnesota. The primary goal of this research is to examine the trace element and isotopic characteristics of volcanic and intrusive rocks and their base and precious metal deposits to reconstruct the temporal and spatial variations in the tectonics, geodynamics, and crustal architecture during the Neoarchean in the western Superior Province. In modern environments, the crustal architecture of various geodynamic settings (arc, back-arc, continental arc) is relatively well understood and the influence this has on metallogenesis is well documented. However, in Precambrian volcanic terranes, the crustal architecture and/or geodynamic setting is poorly understood or constrained. In fact, the role of modern plate tectonic processes in Archean terranes is debated. This research is achieved through the integration of field mapping, stratigraphic/structural reconstructions, economic geology, and lithogeochemistry. 

My second research project has focused on deposit-scale characterizations of ores and hydrothermally altered host rocks of volcanogenic massive sulfide (VMS) deposits in the Paleoproterozoic volcanic arc sequences in the Penokean Orogeny of Wisconsin. Political and societal issues with sulfide mining in Wisconsin has essential ceased mineral exploration efforts since the late 1990's leaving a poorly understood and understudied Precambrian orogeny behind. An extensive, but poorly documented and underutilized core suite of these VMS deposits is available through the Wisconsin Geological and Natural History Survey. Through internal and external grants, I have re-logged, sampled, and analyzed a significant portion of this core. Collaborative research with undergraduate students at UW-Eau Claire has generated a new understanding of these VMS deposit, in particular the litho- and chemo-stratigraphy of the volcanic strata hosting Flambeau and Eisenbrey VMS deposits as well as improved knowledge of the spatial mineralogical variations and mineral hosts of precious metals in the massive sulfide ore zones.

J. Brian Mahoney
Research Interests

My specialization is sedimentology and stratigraphy, with a primary emphasis on sedimentation and tectonics and the use of radiogenic isotopes (Nd and Sr) in basin analysis. My research is heavily field-based, and I have spent the last twenty-two field seasons mapping and conducting bedrock mapping and stratigraphic studies in British Columbia, Washington, and Idaho.

The main focus of my current research is basin reconstruction and terrain analysis in the southern Canadian Cordillera of British Columbia and Washington. My current research program involves a systematic integration of multidisciplinary analytical methods with complementary strengths (detrital zircon U/Pb geochronology, whole-rock neodymium analyses, and detrital thermochronology (K-feldspar, muscovite) designed to constrain source area heterogeneity, exhumation patterns and rates, sediment dispersal characteristics, and basin subsidence mechanisms. The primary objective is to establish a methodology that permits development of a detailed record of the spatial and temporal evolution of orogenic systems along continental margins, in order to constrain the dynamic linkage between orogenic exhumation and basin evolution. In addition, my research focuses on the tremendous potential of utilizing the isotopic signature (Nd and Sr) of fine-grained clastic strata for basin analysis and stratigraphic correlation.

 



PUBLICATIONS         

(*) indicates student coauthor

Journal Articles:

Mahoney, J. Brian, Haggart, James W., Kimbrough, David L., Link, Paul K., Fanning, C. Mark, and Grove, Marty J., 2016, Late Cretaceous Evolution of the Nanaimo Basin: Definitive Provenance Linkage to Northern Latitudes; Geosphere (submitted)

Buelow, Ellen*, Suriano, Julieta, Mahoney, J. Brian, Kimbrough, David, Mescua, José F. and Giambiagi, Laura B., 2016, Sedimentologic and Stratigraphic Evolution of the Cacheuta Basin: Constraints on the Development of the Miocene Retroarc Foreland Basin, South-Central Andes;Lithosphere (submitted).

Surianoa, J., Mardonez, D., Mahoney, J.B., Mescua, J.F., Giambiagi, L.B., Kimbrough, D., Lossada, A., 2016, Uplift sequence of the Andes at 30°S: insights from sedimentology and U/Pb dating of synorogenic deposits;Journal of South American Earth Sciences (submitted)

Oyer, N., Childs, J., and Mahoney, J.B., 2014, Regional setting and deposit geology of the Golden Sunlight Mine: An example of responsible resource extraction, in Shaw, C.A., and Tikoff, B., eds., Exploring the Northern Rocky Mountains: Geological Society of America Field Guide 37, p. 115–144, doi:10.1130/2014.0037(06).

Kimbrough, David L., Abbott, Patrick L., Balch, Duane C., Hosken Bartling, Sarah, Grove, Marty, Mahoney, J. Brian and Donohue, Robert F., 2014, Upper Jurassic Peñasquitos Formation—Forearc basin western wall rock of the Peninsular Ranges batholith, in, Morton, D.M. and Miller, F.K., eds, Peninsular Ranges Batholith, Baja California and Southern California;Geological Society of America Memoir 211, p. 625-645.

Hoke, G.D., Giambiagi, L.B., Garzione, C.N., Mahoney, J.B., and Strecker, M.R., 2014, Neogene paleoelevation of intermontane basins in a narrow, compressional mountain range, southern Central Andes of Argentina: Earth and Planetary Science Letters, vol. 406, p. 153-164.

Haggart, J.W., Bell, K.M., Schröder-Adams, C.J., Campbell, J.A., Mahoney, J.B., and Jackson, K., 2013, New biostratigraphic data from Cretaceous strata of the Eagle Plain region, northern Yukon: reassessment of age, regional stratigraphic relationships, and depositional controls: Bulletin of Canadian Petroleum Geology, vol. 61., No. 2, pp. 101-132.

Kimbrough, D.L., Grove, M., Gehrels, G.E., Mahoney, J.B., Dorsey, R.J., Howard, K.A., House, P.K., Pearthree, P.A. and Flessa, K., 2011. Detrital zircon record of Colorado River integration into the Salton Trough. CRevolution, pp.2011-1210.

Haggart, James W., Mahoney, J. Brian, Forgette, Michelle*, Carter, Elizabeth S., Schroder-Adams, Claudia, MacLaurin, Catherine I*., and Sweet, Arthur R., 2011, Paleoenvironmental and chronological constraints on the Mount Tatlow succession, British Columbia: first recognition of radiolarian and formaniferal faunas in the Intermontane Cretaceous back-arc basins of western Canada: Canadian Journal of Earth Sciences, vol. 48, no. 6, p. 952-972.

MacLaurin, Catherine I.*, Mahoney, J. Brian, Haggart, James W., Goodin, J. Russell* and Mustard, Peter S., 2011, The Jackass Mountain Group of south-central British Columbia: depositional setting and evolution of an Early Cretacous deltaic complex: Canadian Journal of Earth Sciences, vol. 48, no. 6, p. 930-951.

Sears, J.W., Link, P.K., Balgord, E.A.*, and Mahoney, J.B., 2010, Quartzite of Argenta, Beaverhead County, Montana, revisited: Definitive evidence of Precambrian age indicates edge of Belt basin: Northwest Geology, v. 39, p. 41-47.

Mahoney. J. Brian, Gordee*, S.M., Haggart, J.W., Friedman, R.M., Diakow, L.J., Woodsworth, G.J., 2009, Magmatic Evolution of the Eastern Coast Plutonic Complex, Bella Coola Region, West Central British Columbia: Geological Society of America Bulletin, v. 121, p. 1362-1380.

Gehrels, G., Rusmore, M., Woodsworth, G., Crawford, M., Andronicos, C., Hollister, L., Patchett, J., Ducea, M., Butler, R., Klepeis, K., Davidson, C., Friedman, R., Haggart, J., Mahoney, B., Crawford, W., Pearson, D., and Girardi J., 2009, U-Th-Pb geochronology of the Coast Mountains batholith in north-coastal British Columbia: Constraints on age and tectonic evolution; Geological Society of America Bulletin, v. 121, p. 1341-136.

Haus, K.L.*, Hooper, R.L., Strumness, L.A.*, and Mahoney, J.B., 2008, Analysis of arsenic speciation in mine contaminated sediment using selective sequential extraction, HR-ICPMS and TEM, Applied Geochemistry, vol. 23, no. 4, p. 692-704.

Grove, M., Bebout, G.E., Jacobson, C.E., Barth, A.P., Kimbrough, D.L., King, R.L., Zou, H., Lovera, O.M., Mahoney, J.B., and Gehrels, G.E., 2008, The Catalina Schist: Evidence for mid-Cretaceous subduction erosion of southwestern North America, in Draut, A.E., Clift, P.D., and Scholl, D.W., eds., Formation and applications of the sedimentary record in arc collision zones, Geological Society of America Special Paper 436, p. 335-362.

Anderson, T.H. and Mahoney, J.B., 2006, Late Jurassic basins: The tracks of a continental-scale transform from the Gulf of Mexico to Alaska, in Haggart, J.W., Enkin, R.J. and Monger, J.W.H., eds., Paleogeography of the North American Cordillera: Evidence For and Against Large-Scale Displacements: Geological Association of Canada, Special Paper 46, p. 369-375.

Enkin, R.J., Mahoney, J.B. and Baker, J., 2006, Paleomagnetic signature of the Silverquick/Powell Creek succession, south-central British Columbia: Reaffirmation of Late Cretaceous large-scale terrane translation, in Haggart, J.W.,Enkin, R.J. and Monger, J.W.H., eds., Paleogeography of the North American Cordillera: Evidence For and Against Large-Scale Displacements: Geological Association of Canada, Special Paper 46, p. 201-220.

Weis, D., Kieffer, B., Maerschalk, C., Barling, J., de Jong, J., Williams, G., Hanano, D., Pretorius, W., Mattielli, N., Scoates, J., Goolaerts, A., Friedman, R., Mahoney, J. B., 2006, High-precision isotopic characterization of USGS reference materials by TIMS and MC-ICP-MS, Geochemistry, Geophysics, Geosystems (G-cubed), Vol. 7, Q08006 DOI 10.1029/2006GC001283

Kimbrough, D.L., Abbott, P.L., Grove, M., Smith, D.P., Mahoney, J.B., Moore, T.M., Gehrels, G.E., 2006, Contrasting cratonal provencance of Upper Cretaceous Valle Group quartzite clasts, Baja California, in, Girty, G.H., and Cooper, J.D., eds., Using Stratigraphy, Sedimentology, and Geochemistry to Unravel the Geologic History of the Southwestern Cordillera, SEPM volume 101, p. 97-110.

Mahoney, J. Brian, 2005, Isotopic fingerprinting of fine-grained clastic sediments: A case study of Western Pacific marginal basins;Sedimentary Geology, vol. 182, p. 183-199. 

Mahoney, J Brian, and Horn, Michael C., 2005, Geology of the Vienna mineralized area, Blaine and Camas Counties, Idaho;U. S. Geological Survey Bulletin, Report: B 2064-DD, 9 pp.

DeGraaff-Surpless, K., Mahoney, J. Brian, Wooden, J.L., McWilliam, M.O., 2003, Lithofacies control in detrital zircon provenance studies: Insights from the Cretaceous Methow Basin, southern Canadian Cordillera: Geological Society of America Bulletin, vol. 115, no. 8, p. 899-915.

Haskin, M.L.*, Enkin, R.J., Mahoney, J. Brian, Mustard, P.S. and J. Baker, 2003, Deciphering shallow paleomagnetic inclinations in the southern Canadian Cordillera - 1: Implications from Albian volcanic rocks along the Insular/Intermontane Superterrane boundary: Journal of Geophysical Research, vol. 108, no. B4, p. 2105.

Enkin, R.J., Mahoney, J.Brian, Baker, J, and Riesterer, J.*, 2003, Deciphering shallow paleomagnetic inclinations in the southern Canadian Cordillera - 2: Implications from Late Cretaceous strata overlapping the Insular/Intermontane Superterrane boundary: Journal of Geophysical Research, vol. 108, no. B4, p. 2186.

Enkin, R.J., Mahoney, J.Brian, Haugerud, R.A., and Kiessling, M.D.*, 2002, Syntectonic remagnetization in the southern Methow block: Resolving large displacements in the southern Canadian Cordillera;Tectonics, vol. 21, no. 4, 10.1029/2001TC001294.

Rowe, C.A.*, Mustard, P.S., Mahoney, J.B., and Katnick, D.C., 2002, Oriented clastic dike swarms as indicators of paleoslope? An example from the Upper Cretaceous Nanaimo Group, Canada, Journal of Sedimentary Research, v. 72, no. 1, p. 197-205.

Kimbrough, D.L., Smith, D.P., Mahoney, J.B., Moore, T.E., Grove, Marty, Gastil, R.G., Ortega Rivera, M.A., and Fanning, C.M., 2001, Forearc basin sedimentary response to rapid Late Cretaceous batholith emplacement in the Peninsular Ranges of southern and Baja California: Geology, v. 29, p. 491–494.

Riesterer, J.*, Mahoney, J. Brian, and Link, Paul Karl, 2001, The conglomerate of Churn Creek: Late Cretaceous basin evolution along the Insular/Intermontane superterrane boundary, southern British Columbia, Canadian Journal of Earth Sciences, vol. 38, p. 59-73.

Mahoney, J. Brian, Mustard, Peter S., Haggart, James W., Friedman, Richard M., Fanning, C. Mark, McNicoll, Vicki J., 1999, Archean zircons in Cretaceous strata of the western Canadian Cordillera: the "Baja B.C." hypothesis fails a 'crucial test", Geology, V. 27, no. 3, p. 195-198.

Mahoney, J. Brian, Hooper, Robert L., and Michael, Greg*, 1998, Resolving compositional variations in fine-grained clastic sediments: a comparison of isotopic and mineralogical sediment characteristics, Shikoku Basin, Philippine Sea;in Schieber, J., Zimmerle, W., and Sethi, P., eds., Mudstones and Shales, E. Schweizerbart'sche Verlagsbuchhandlung, p. 177-194.

Mahoney, J. Brian, Havholm, Karen G., Runkel, Anthony C., and Hooper, Robert L., 1997, Late Cambrian shelf sedimentation, Upper Mississippi Valley, Wisconsin and Minnesota (abbreviated version);in Mudrey, M.G., ed., Field Trips in Wisconsin and Adjacent Areas of Minnesota;31st Annual Meeting of the North-Central Section of the Geological Society of America, p. 51-67.

Mahoney, J. Brian, Friedman, R.M., and McKinley, S., 1995, Evolution of a Middle Jurassic arc: Stratigraphic, isotopic, and geochemical characteristics of the Harrison Lake Formation, southwestern British Columbia;Canadian Journal of Earth Sciences, vol. 32, no. 10, p. 1759-1776.

Friedman, R.M., Mahoney, J.B., and Cui, Y., 1995, Magmatic evolution of the Southern Coast Belt: Constraints from Nd-Sr isotopic systematics and geochronology of the southern Coast Plutonic Complex;Canadian Journal of Earth Sciences, vol. 32, no. 10, p. 1681-1698.

Monger, J.W.H., van der Heyden, P., Journeay, J.M., Evenchick, C.A., and Mahoney, J.B., 1994, Jurassic-Cretaceous basins along the Canadian Coast Belt: Their bearing on pre-mid Cretaceous sinistral displacements;Geology, vol. 22, no. 2, p. 175-178.

Mahoney, J. Brian, Link, Paul Karl, Burton, B.R., Geslin, J.K., and O'Brien, J.P., 1991, Pennsylvanian and Permian Sun Valley Group, Wood River Basin, South-Central Idaho: in Cooper, J.D. and Stevens, C.H., eds., Paleozoic Paleogeography of the Western United States II, Pacific Section Society of Economic Paleontologists and Mineralogists, p. 551-579.

Link, P.K., Mahoney, J.B., Burton, B.R., Ratchford, M.E., Turner, R.J., and Otto, B.R., 1987, Introduction to Geology of the Central Idaho Black Shale Mineral Belt;in Sears, J.W., ed., Northwest Geology, vol. 16, p. 61 84.


Peer-Reviewed Articles:

Mahoney, J.B., Pignotta, G.S., Ihinger, P.D., Wittkop, C., Balgord, E.A., Potter, J.J. and Leistikow, A.R., 2015, Geologic relationships in the northern Helena Salient, Montana: Geology of the Elliston Region; in, Geology of the Elliston Area, Montana, and other papers: 40th Annual Field Conference; C. MacDonald and J. Mosolf, eds.;Northwest Geology v. 44, p. 109-136.

Mahoney, J. Brian, Syverson, Kent M., and Runkel, Anthony C., 2015, Industrial Sand Deposits in Western Wisconsin: Geology, Resource Distribution and Extraction Techniques: SME Wisconsin/Twin Cities Annual Conference Field Trip Guidebook, 35 p.
Kimbrough, D.L., Grove, M., Gehrels, G.E., Mahoney, J.B., Dorsey, R.J., Howard, K.A., House, P.K., Pearthree, P.A., and Flessa, K., 2011, Detrital Zircon Record of Colorado River Integration into the Salton Trough. In: Beard, L.S., Karlstrom, K.E., Young, R.A., and Billingsley, G.H., eds., 2011, CREvolution 2 – Origin and evolution of the Colorado River system, workshop abstracts: U.S. Geological Survey Open-File Report 2011-1210, p. 168-174.

Nelson, J.L., Diakow, L.J., Karl, S., Mahoney, J.B. , Gehrels G.E. , Pecha, M. , and van Staal, C., 2011, Geology and mineral potential of the southern Alexander terrane and western Coast Plutonic complex near Klemtu, northwestern British Columbia, in Geological Fieldwork 2010, BC Ministry of Forests, Mines and Lands, BC Geological Survey Paper 2011-1, p. 73-98.

Nelson, J.L., Diakow, L.J., Karl, S., Mahoney, J.B. , Gehrels G.E. , Pecha, M. , and van Staal, C., 2011, Geology of the mid-coast region of BC near Klemtu, parts of 103A/08, A09, A/15 and A/16;B.C. Ministry of Energy and Mines, Open-File 2011-3, 1:100 000 scale

Balgord, E.A., Mahoney, J. Brian, Potter, J.J, Pignotta, G.S., Wittkop, C., King, N. E., Hardel, B. G., and Kadulski, B. 2011, Geologic map of Esmeralda Hills 7.5' quadrangle, west-central Montana, Montana Bureau of Mines and Geology: Open-File Report xxx, 11 p., 1 sheet(s), 1:24,000.

MacLaurin, C., Mahoney, J. B., Guy, A., Forgette, M., Kjos, A., Wittkop, C., Kohel, C., Balgord, E., Barber, B., and Ihinger, P.D., 2010, Geologic map of the Dunn Creek, 7.5' quadrangle west-central Montana: Montana Bureau of Mines and Geology EDMAP portion of the National Geologic Mapping Program 9, 1 sheet, scale 1:24,000.

Mahoney, J.B., Hickson, C.J., Schiarizza, P., Read, P.B., Enkin, R.J., Haggart, J.W., van der Heyden, P., and Israel, S., 2010, Geology, Taseko Lakes, British Coulumbia;Geological Survey of Canada, Open File 6150, scale 1:250,000.

Nelson, J.L., Mahoney, J.B. and Gehrels, G.E., 2010, Geology and mineral potential of the Porcher Island –Grenville Channel area, northwestern British Columbia;B.C. Ministry of Energy and Mines, Open-File 2010-03 (also, Geological Survey of Canada, Open File 6654, 1:50 000 scale.

Nelson, J.L., Mahoney, J.B., Gehrels, G.E., van Staal, C. and Potter, J.J., 2010, Geology and Mineral Potential of Porcher Island, Northern Grenville Channel and Vicinity, Northwestern British Columbia; in Geological Fieldwork 2009, British Columbia Ministry of Energy and Mines, Paper 2010-1, p. 19-43.

Pignotta, G.S., Mahoney, J.B., Hardel, B.G and Meyers, J.L, 2010, Volcanic facies, deformation and economic mineralization in Paleozoic strata of the Terrace- Kitimat area, British Columbia (NTS 103I). Geoscience BC Summary of Activities 2009, Geoscience BC, Report 2010-1, p. 105–114.

Mahoney, J.B., Haggart, J.W., MacLaurin, C.I., Forgette, M.M., Goodin, J.R., Balgord, E.A. and Mus tard, P.S., 2009,

Regional facies patterns in the northern Jackass Moun tain Group, northern Methow Basin, southwestern British Colum bia (NTS 092O);in Geoscience BC Summary of Activities 2008, Geoscience BC, Report 2009-1, p. 183–192.

Mahoney, J.B., Kjos, A., Stolz, J., Maclaurin, K., Kohel, C., 2008, Geologic map of the Devils Fence 7.5' quadrangle, west-central Montana, Montana Bureau of Mines and Geology: Open-File Report 565, 11 p., 1 sheet(s), 1:24,000.

Mahoney, J.B., Nawikas, J., Kjos, A., Stolz, J., Maclaurin, K., Kohel, C., 2008, Geologic map of Tacoma Park 7.5' quadrangle, west-central Montana, Montana Bureau of Mines and Geology: Open-File Report 564, 11 p., 1 sheet(s), 1:24,000.

Mustard, P.S., Mahoney, J.B., Goodin, J.R., MacLaurin, C.I. and Haggart, J.W., 2008, New studies of the Lower Cretaceous Jackass Mountain Group on the southern margin of the Nechako Basin, south-central British Columbia: progress and preliminary observations; in Geoscience BC Summary of Activities 2007, Geoscience BC, Report 2008-1, p. 135–144.

Mahoney, J.B., Haggart, J.W., Hooper, R.L., Snyder, L.S., and Woodsworth, G.J., 2007, Geology, Tahtsa Peak (93E/12), British Columbia. Geological Survey of Canada, Open File 5585;Geoscience BC Map 2007-11-1, 1 sheet, scale 1:50,000.

Mahoney, J.B., Haggart, J.W., Hooper, R.L., Snyder, L.S., and Woodsworth, G.J., 2007, Geology, parts of Chikamin Mountain and Troitsa Lake (93E/06, 11), British Columbia. Geological Survey of Canada, Open File 5586;Geoscience BC Map 2007-11-2, 1 sheet, scale 1:50,000.

Mahoney, J.B., Haggart, J.W., Hooper, R.L., Snyder, L.S., and Woodsworth, G.J., 2007, Geology, Tsaytis River (93E/05), British Columbia. Geological Survey of Canada, Open File 5587;Geoscience BC Map 2007-11-3, 1 sheet, scale 1:50,000.

Mahoney, J.B., Haggart, J.W., Woodsworth, G.J., Hooper, R.L., and Snyder, L.S., 2007, Geology, Kitlope Lake (93E/04), British Columbia. Geological Survey of Canada, Open File 5588;Geoscience BC Map 2007-11-4, 1 sheet, scale 1:50

Mahoney, J.B., Haggart, J.W., Hooper, R.L., Snyder, L.D., Woodsworth, G.J. and Friedman, R.M, 2007, New geological mapping and implications for mineralization potential in the southern and western Whitesail Lake map area, southwestern British Columbia; in Geological Fieldwork 2006, British Columbia Ministry of Energy and Mines, Paper 2007-1, p. 341-354.

Haggart, J.W., Diakow, L.J., Mahoney, J.B., Woodsworth, G.J., Struik, L.C., Gordee, S.M., Israel, S., Hooper, R.L., Rusmore, M., Lett, R., Ceh, M., Hastings, N.L., and Wagner, C., 2007, Bedrock geology, Bella Coola region (93C, 93D, 93E, 92M, and 92N), British Columbia; Geological Survey of Canada, Open File 5410.

Haggart, J.W., Diakow, L.J., Mahoney, J.B., Woodsworth, G.J., Struik, L.S., Gordee, S.M., and Rusmore, M., 2006. Geology, Bella Coola region (NTS 93D/01, /07, /08, /10, /15, and parts of 93D/02, /03, /06, /09, /11, /14, /16, and 92M/15 and /16), British Columbia. Geological Survey of Canada, Open File 5385, 3 sheets, scale 1:100,000.

Mahoney, J.B., Haggart, J.W., Hooper, R.L., Snyder, L.D. and Woodsworth, G.J., 2006, Geological setting and mineralization potential of the southwestern Whitesail Lake map mrea (NTS 93E), western BC: Preliminary assessment;in Geological Fieldwork 2005, British Columbia Ministry of Energy and Mines, Paper 2006-1, p. 313-322.

Petersen, N.D., Russell, J.K. and Mahoney, J.B., 2006, Mantle-derived xenoliths from the western Intermontane Belt, Whitesail Lake map area (NTS 093E), Western BC; in Geological Fieldwork 2005, British Columbia Ministry of Energy and Mines, Paper 2005-1, p. 153-161.

Mahoney, J. Brian and Horn, Michael C., 2005, Geology of the Vienna mineralized area, Blaine and Camas Counties, Idaho, U. S. Geological Survey Bulletin, Report: B 2064-DD, 9 pp.

Mahoney, J.B., Hooper, R.L., Gordee, S.M., Haggart, J.W., and Mortensen, J.K., 2005, Initial evaluation of bedrock geology and economic mineralization potential of southern Whitesail Lake map area (92O2/03), west-central British Columbia; in Geological Fieldwork 2004, British Columbia Ministry of Energy and Mines, Paper 2005-1, p. 291-300.

Gordee, S.M., Mortensen, J.K., Mahoney, J.B., and Hooper, R.L., 2005, Volcanostratigraphy, lithogeochemistry, and U-Pb geochronology of the Upper Hazelton Group, west-central British Columbia: Implications for Eskay Creek-type VMS mineralization in the southwest Stikinia; in Geological Fieldwork 2004, British Columbia Ministry of Energy and Mines, Paper 2005-1, p. 311-322.

Haggart, J.W., Diakow, L.J., Mahoney, J.B., Struik, L.C., Woodsworth, G.J., and Gordee, S.M., 2004, Geology, Bella Coola area (parts of 93D/01, D/02, D/06, D/07, D/08, D/09, D/10, D/11, D/15 and D/16), British Columbia; Geological Survey of Canada, Open File 4639;British Columbia Geological Survey and Development Branch, BC GSDB Open File 2004-13, scale 1:150 000.

Mortensen, J.K., Gordee, S.M., Mahoney, J.B. and Tosdal, R.M., 2004, Regional studies of Eskay Creek-type and other VMS mineralization in the Upper Hazelton Group in Stikinia: Preliminary results; in Geological Fieldwork 2003, British Columbia Ministry of Energy and Mines, Paper 2004-1, p. 249-262.

Diakow, L.J., Mahoney, J.B., Haggart, J.W., Woodsworth, S.M., Gordee, S.M., Snyder L.D., Poulton, T.P., Friedman, R.M., and Villeneuve, M., 2003, Geology of the Eastern Bella Coola Map Area, West Central British Columbia in Geological Fieldwork 2003, B.C. Ministry of Energy and Mines, Paper 2003-1, p.1-134.

Haggart, J.W., Mahoney, J.B., Diakow, L.J., Woodsworth, G.J, Gordee, S.M., Snyder, L.D., Poulton, T.P, Friedman, R.M, Villeneuve, M., 2003, Geological setting of eastern Bella Coola map area (93 D), west-central British Columbia: in Current Research 2003;Geological Survey of Canada, no. 2003-A04, 9 pages

Balistrieri, L.S., Box, S.E., Bookstrom, A.A., Hooper, R.L., and Mahoney, J.B., 2002, Impacts of historical mining in the Coeur d'Alene Basin: in Pathways of Metal Transfer from Mineralized Sources to Bioreceptors: A Synthesis of the Mineral Resources Program's Past Environmental Studies in the Western United States and Future Research Directions (eds. Laurie S. Balistrieri and Lisa L. Stillings), U.S. Geological Survey Bulletin 2191, Chapter 6, p. 1-34.

Diakow, L.J., Mahoney, J. Brian, Johnson, A.D.*, T.G. Gleeson, T.G., Hrudey, M.G., Struik, L.C, 2002, Middle Jurassic Stratigraphy Hosting Volcanogenic Massive Sulphide Mineralization in Eastern Bella Coola Map Area (NTS 093/D), Southwest British Columbia, in Geological Fieldwork 2001, B.C. Ministry of Energy and Mines, Paper 2002-1, p.119-134.

Mahoney, J.B., Struik, L.C., Diakow, L.J., Hrudey, M.G., and Woodsworth, G.J., 2002, Structural geology of the eastern Bella Coola map area, British Columbia; in Current Research 2002;Geological Survey of Canada, no. 2002-A10, 2002; 9 pages

Struik, L.C., Mahoney, J.B., Hrudey, M.G,, Diakow, L.J., Woodsworth, G.J., Sparks, H.A., and Kaiser, E.A with fossil identifications by J. Haggart. 2002: Early Cretaceous stratigraphy and tectonics of eastern Bella Coola map area, southwest British Columbia; in Current Research 2002;Geological Survey of Canada, no. 2002-A11, 2002; 10 pages.

Hrudey, M.G., Struik, L.C., Diakow, L.J., Mahoney, J.B., Sparks, H.A., Kaiser, E.A. and Woodsworth, G.J., 2002, Plutonic complexes of the eastern Bella Coola map area, east-central Coast Mountains, British Columbia; in Current Research 2002;Geological Survey of Canada, no. 2002-A9, 2002; 10 pages.

Balistrieri, L.S., Box, S.E., Bookstrom, A.A., Hooper, R.L., and Mahoney, J.B., 2002, Impacts of historical mining in the Coeur d'Alene Basin: in Pathways of Metal Transfer from Mineralized Sources to Bioreceptors: A Synthesis of the Mineral Resources Program's Past Environmental Studies in the Western United States and Future Research Directions (eds. Laurie S. Balistrieri and Lisa L. Stillings), U.S. Geological Survey Bulletin 2191, Chapter 6, p. 1-34.

Link, P.K., Mahoney, J.B., Bruner, D.J., Batatian, L.D., Wilson, E., and Williams, F.J.C., 2000, Geologic map of outcrop areas of sedimentary units in the eastern part of the Hailey 1X2° Quandrangle and part of the southern part of the Challis 1X2° Quadrangle, south-central Idaho: U.S. Geological Survey Bulletin 2064-C.

Pint, C.D.*, Anderson, R.G., and Mahoney, J.B., 2000, Stratigraphy and structures within the Lower to Middle Jurassic Hazelton Group, Takysie Lake and Marilla map areas, central British Columbia; in Current Research, Part A; Geological Survey of Canada, Paper 00-1A, no. 2000-A11, 2000;9 pages.

Mahoney, J.B., B. Tikoff, J. Maxson, and R.A. Haugerud. 2000, Terrane accretion along the western Cordilleran margin: Constraints on timing and displacement: GSA Today. v. 10, no. 2. p. 11–13.

Mahoney, J. Brian, and Haugerud, Ralph A., 1999, Terrane accretion along the western Cordilleran margin: Constraints on timing and displacement: Field Trip Guidebook + Proceedings Abstracts;1999 Penrose Conference Proceedings, 102 p.

Mahoney, J.B., Vaughn, J.*, Link, P.K., Reisterer, J.W., Hickson, C.J., and Friedman, R.M., 1999, Late Cretaceous and Paleocene strata along the Intermontane-Methow terrane boundary, southern Chilcotin Plateau, south-central British Columbia; in Current Research, Part A; Geological Survey of Canada, Paper 99-1A, p. 215-224.

Haskin, M.L.*, Mahoney, J.B., Enkin, R.J., Mustard, P.S., and Hickson, C.J., 1999, Stratigraphic affinity of Upper Cretaceous volcanic rocks in the Churn Creek-Gang Ranch area, south-central British Columbia; in Current Research, Part A;Geological Survey of Canada, Paper 99-1A, p. 225-231.

Mustard, P.S., Katnick, D.C., Baker, J., Enkin, R., and Mahoney, J.B., 1999, Multidisciplinary studies of the Upper Cretaceous Nanaimo Group, Hornby and Denman islands, British Columbia; in Current Research, Part A; Geological Survey of Canada, Paper 99-1A, p. 231-239.

Riesterer, J.W.*, Mahoney, J. Brian, and Link, Paul K., 1998, Re-examination of Late Albian-Cenomanian conglomerate in Churn Creek, Gang Ranch area, southern British Columbia; in Current Research, Part A; Geological Survey of Canada, Paper 98-1A, p. 165-174.

Kiessling, Mark D.*, and Mahoney, J. Brian, 1997, Revised stratigraphy of the Pasayten Group, Manning Park, British Columbia;in Current Research, Part A; Geological Survey of Canada, Paper 97-1A, p. 151-158.

Haugerud, Ralph A., Mahoney, J. Brian, and Dragovich, Joe, 1996, Geology of the Methow Block: Northwest Geological Society Field Trips in Pacific Northwest Geology, 48 p. http://www.nwgs.org/field_trip_guides/6.%20methow%20region.pdf

Mahoney, J. Brian, Monger, J.W.H., and Hickson, C.J., 1996, Albian-Cenomanian conglomerates along the Intermontane/Insular superterrane boundary: A critical test for large-scale terrane translation?;in Current Research, Part A; Geological Survey of Canada, Paper 96-1A, p. 101-109.

Mahoney, J. Brian, 1995, Geologic setting of mineral deposits in the Washington Basin area, Custer County, Idaho: in Worl, R.G., et al, eds., Geology and Mineral Resources of the Hailey 1o x2o Quadrangle and the Western Part of the Idaho Falls 1o x2o Quadrangle, Idaho; U.S. Geological Survey Bulletin 2064-A-R, p. G1-G12.

Link, P.K., Mahoney, J.B., Bruner, D.J., Batatian, L.D., and Williams, F.J.C., 1995, Stratigraphic setting of sediment-hosted mineral deposits in the eastern Hailey 1o x2o quadrangle, Blaine, Custer, and Camas Counties, south-central Idaho: in, Worl, R.G., et al, eds., Geology and Mineral Resources of the Hailey 1o x2o Quadrangle and the Western Part of the Idaho Falls 1o x2o Quadrangle, Idaho, U.S. Geological Survey Bulletin 2064-A-R, p. C1-C33.

Mahoney, J. Brian, 1994, Nd isotopic signatures and stratigraphic correlations: examples from western Pacific marginal basins and Middle Jurassic rocks of the southern Canadian Cordillera; unpublished PhD. dissertation, University of British Columbia, 326 p.

Journeay, J.M., and Mahoney, J.B., 1994, Cayoosh assemblage: regional correlations and implications for terrane linkages in the southern Coast Belt; in Current Research, Part A; Geological Survey of Canada, Paper 94-1A, p. 165 175.

Hickson, C.J., Mahoney, J.B., and Read, P., 1994, Geology of Big Bar map area: facies distribution in the Jackass Mountain Group; in Current Research, Part A; Geological Survey of Canada, Paper 94-1A, p. 143-150.

Mahoney, J. Brian, 1993, Facies reconstructions in the Lower to Middle Jurassic Ladner Group, southern British Columbia; in Current Research, Part A; Geological Survey of Canada, Paper 93-1A, p. 173-182.

Mahoney, J.B., and Journeay, J.M., 1993, The Cayoosh Assemblage, southwestern British Columbia: last vestige of the Bridge River Ocean; in Current Research, Part A; Geological Survey of Canada, Paper 93-1A, p. 235-244.

Mahoney, J. Brian, 1992a, Middle Jurassic stratigraphy of the Lillooet area, south-central British Columbia, in Current Research, Part A, Geological Survey of Canada, Paper 92-1A, p. 243-249.

Mahoney, J. Brian, 1992b, Geologic map of the Frenchman Creek Quadrangle, Blaine and Camas Counties, Idaho; Idaho Geological Survey Technical Report 92-2, scale 1:24,000 

Mahoney, J. B., Hickson, C.J., van der Heyden, P., and Hunt, J.A., 1992, The Late Albian-Early Cenomanian Silverquick conglomerate, Gang Ranch area: evidence for active basin tectonism, in Current Research, Part A, Geological Survey of Canada, Paper 92-1A, p. 249-261.

Mahoney, J. Brian, and Link, Paul Karl, 1992, Geologic map of the Galena Quadrangle, Blaine and Camas Counties, Idaho: Idaho Geological Survey Technical Report 92-3, scale 1:24,000.

Stewart, D.E., Geslin, J.K., Mahoney, J.B., Darling, R.S., and Link, P.K., 1992, Geologic map of the Baker Peak Quadrangle, Blaine and Camas Counties, Idaho: Idaho Geological Survey Technical Report 92-1, scale 1:24,000. 

Mahoney, J. Brian, 1989, Geology and mineral deposits of the Washington Basin area, Custer County, Idaho, in Winkler, G.R., Soulliere, S.J., Worl, R.G., and Johnson, K.M., eds., Geology and Mineral Deposits of the Hailey and western Idaho Falls 1x2 Quadrangles, Idaho; U.S. Geological Survey Open-File Report 89-639, p. 95-110.

Mahoney, J. Brian and Horn, Michael, 1989, Geology and mineral deposits of the Vienna mining district, Blaine and Camas Counties, Idaho, in Winkler, G.R., Soulliere, S.J., Worl, R.G., and Johnson, K.M., eds., Geology and Mineral Deposits of the Hailey and western Idaho Falls 1x2 Quadrangles, Idaho: U.S. Geological Survey Open-File Report 89-639, p. 111-116.

Link, P.K., and Mahoney, J.B., 1989, Stratigraphic setting of sediment-hosted mineralization in the eastern Hailey 1x2 quadrangle, Blaine, Custer, and Camas counties, south-central Idaho; in Winkler, G.R., Soulliere, S.J., Worl, R.G., and Johnson, K.M., eds., Geology and Mineral Deposits of the Hailey and western Idaho Falls 1ox2o Quadrangles, Idaho: U.S. Geological Survey Open-File Report 89-639, p. 53-69. 

Mahoney, J. Brian and Sengebush, R.M., 1988, Stratigraphy of the Lower Permian Grand Prize Formation, south-central Idaho, in Link, P.K. and Hackett, W.R., eds., Guidebook to the Geology of Central and Southern Idaho;Idaho Geological Survey Bulletin 28, p. 169-179.

Mahoney, J. Brian, Link, P.K., Henkelman, J.J., McCalpin, J. and Smith, B., 1987, Bear River Landslide Complex, Preston, Idaho: geologic considerations and historical perspectives;in McCalpin, J., ed., Proceedings of the Twenty-third Annual Symposium on Engineering Geology and Soils Engineering, Logan, Utah, p. 306 333.

Link, P.K., Mahoney, J. Brian, McCalpin, J., Henkelman, J.J., and Smith, B., 1987, Field trip guide to the Bear River Landslide Complex;in McCalpin, J., ed., Proceedings of the Twenty-third Annual Symposium on Engineering Geology and Soils Engineering, Logan, Utah, p. 334 353.


Abstracts
*denotes student author

Mahoney, J. Brian, Haggart, James W., Kimbrough, David L., Link, Paul K., Fanning, C. Mark, and Grove, Marty J., 2016, Late Cretaceous Evolution and Sediment Provenance of the Nanaimo Basin: Definitive Linkage to Northern Latitudes; Geological Society of America Abstracts with Programs. Vol. 48, No. 7, doi: 10.1130/abs/2016AM-287848

Mahoney, J.B., Link, Paul, and Pearson, David, 2016, The Influence of Rift Geometry on Continental Sediment Dispersal Patterns; Geological Society of America Abstracts with Programs. Vol. 48, No. 7, doi: 10.1130/abs/2016AM-288012

Isava, Virginia*, Grove, Marty, Mahoney, J. Brian and Kimbrough, Dave, 2016, Detrital K-Feldspar Thermochronology of the Nanaimo Group: Evidence for Late Cretaceous Denudation of Arc Crust and the Influx of Extraregional Sediment;Geological Society of America Abstracts with Programs. Vol. 48, No. 7, doi: 10.1130/abs/2016AM-277776

Fliflet, Rachel*, Poirier, Justin M.*, Mahoney, J. Brian and Syverson, Kent M., 2016, Diagenetic History of Cambrian Sandstone Units in Western Wisconsin; Geological Society of America Abstracts with Programs. Vol. 48, No. 7, doi: 10.1130/abs/2016AM-287864

Kimbrough, David L., Mahoney, J.B., Mescua, José F., Giambiagi, Laura B., and Grove, Marty, 2016, The Choiyoi Silicic Large Igneous Province of Argentina and Chile and Its Possible Influence on Permian Environmental Degradation and Mass Extinction, Geological Society of America Abstracts with Programs. Vol. 48, No. 7, doi: 10.1130/abs/2016AM-287712

Balgord, Elizabeth, Mahoney, J. Brian, Kimbrough, David L., Mazzitelli, Manuela Amelia*, and Giambiagi, Laura 2016., Evolution Of The South-Central Andean Arc Determined By Detrital Zircon U-Pb And Hf Analysis Of Retroarc Basin Strata, Central Argentina (32°S-40°S); Geological Society of America Abstracts with Programs. Vol. 48, No. 7, doi: 10.1130/abs/2016AM-287093

Bartnik, Samantha R.*, Wiest, Adam C*., Mc Ellistrom, Laurel J., Mahoney, J. Brian, Sellwood, Stephen M. and Mueller, Carly A.*, 2016, Surface Water And Groundwater Chemistry Of Western Wisconsin: Establishing An Environmental Baseline;Geological Society of America Abstracts with Programs. Vol. 48, No. 7, doi: 10.1130/abs/2016AM-284086

Suriano, Julieta, Mardonez, Diego,* Lossada, Ana Clara*, Mahoney, J. Brian, Mescua, Jose F., Giambiagi, Laura B, Kimbrough, David L., and Buelow, Ellen K.*, 2016, Stratigraphic Stages of Bermejo Basin: New Insights from Sedimentology and U/Pb Dating;Geological Society of America Abstracts with Programs. Vol. 48, No. 7, doi: 10.1130/abs/2016AM-287411

Fliflet, R.*, Poirier, J.M.*, Mahoney, J.B., and Syverson, K.M., 2016, Diagenetic history of Cambrian sandstone units in western Wisconsin: Implications for resource extraction: Geological Society of America Abstracts with Programs (North-Central meeting, Champaign-Urbana, IL), v. 48, no. 5, doi: 10.1130/abs/2016NC-275548.
 
Mazzitelli, Manuela Amelia*, Mahoney, J. Brian., Balgord, Elizabeth*, Giambiagi, Laura B., Kimbrough, Dave, Lossada, Ana Clara, and McCann, Chaz*, 2015, Evolution of the Manantiales Basin, San Juan, Argentina: Constraining Miocene Orogenic Patterns in the South-Central Andes;Geological Society of America Abstracts with Programs. Vol. 47, No. 7, p. 151.

Mahoney, J.B., and Syverson, K.M., 2015, Cementation in Cambrian sandstone in western Wisconsin: assessing the potential for the generation of respirable silica: Geological Society of America Abstracts with Programs (North-Central meeting, Madison, WI), v. 47, no. 5, p. 9.

Poirier, J.M.*, Fliflet, R.*, Haas, J.W.*, Blotz, K.E.*, Mahoney, J.B., Syverson, K.M., and Pignotta, G., 2015, Diagenetic patterns in Cambrian sandstone in western Wisconsin: constraining potential sources of airborne particulate matter: Geological Society of America Abstracts with Programs (North-Central meeting, Madison, WI), v. 47, no. 5, p. 31.

Buelow, Ellen*, Suriano, Julieta, Mahoney, J. Brian, Kimbrough, David, Giambiagi, Laura B., and Mescua, José F., 2015, Evolution of the Neogene Cacheuta Basin: A Record of Orogenic Exhumation and Basin Inversion in the South Central Andes; Geological Society of America Abstracts with Programs. Vol. 47, No. 7, p. 803.

Kimbrough, David L., Mahoney, J. Brian, Mescua, José, Giambiagi, Laura B. And Buelow, Ellen K.*, 2015, New Zircon U-Pb Ages Define A Strongly Episodic History of Magmatism for The Permo-Triassic Choiyoi Silicic Large Igneous Province Of Chile And Argentina; Geological Society of America Abstracts with Programs. Vol. 47, No. 7, p. 497.

Mahoney, J. Brian, Link, Paul K., Pearson, David M., 2015, Segmentation of the Western Laurentian Continental Margin: Evidence for Active Tectonism in the Neoproterozoic-Cambrian 'Miogeocline;' Geological Society of America Abstracts with Programs. Vol. 47, No. 7, p. 860.

Pignotta, Geoffrey and Mahoney, J. Brian, 2015, Timing and Rate of Exhumation of the Boulder and Pioneer Batholiths in Southwestern Montana;Geological Society of America Abstracts with Programs. Vol. 47, No. 7.

Lossada, A.C., Mardónez, D., Suriano, J. Hoke, G.D., Fitzgerald, P.G., Mahoney, J.B., and Giambiagi, L., 2015, Uplift Sequence of the Main Morphostructural Units of the South Central Andes at 30°S: Insights from a Multidisciplinary Approach;AGU,
Mazzitelli, Manuela Amelia*, Giambiagi, Laura Beatríz, Mahoney, Brian, Lossada, Ana Clara*, Jeanneret, Pilar*, 2015, Avances en el estudio estructural y tectónico de la zona del Cerro Mercedario (32ºs), San Juan, Argentina.

*Buelow, Ellen D., Suriano, Julieta, Mahoney, J. Brian, Mescua, Jose F., Giambiagi, Laura B., Kimbrough, David L., 2014, Stratigraphic analysis of the Neogene Cacheuta basin: a record of orogenic exhumation and basin inversion in the south central Andes;Geological Society of America Abstracts with Programs. Vol. 46, No. 6, p. 365.

Buelow, Ellen D., Mahoney, J. Brian, Kimbrough, David L., Taylor, Samantha*, Nehring, Brian*, Hutter, Alex*, and Leidel, Alyssa*, 2014, Linking undergraduate research with community outreach in Argentina: the International Fellows Program at the University of Wisconsin-Eau Claire;Geological Society of America Abstracts with Programs. Vol. 46, No. 6, p. 192.

Mahoney, J. Brian, Kimbrough, David L., Hoke, Gregory D., Mescua, Jose F., Giambiagi, Laura B., Buelow, Ellen D.*, Hutter, Alex*, and Leidel, Alyssa*, 2014, Cuenca Uspallata: an intermontane basin records episodic uplift of the Cordillera Frontal and Precordillera in the late Miocene;Geological Society of America Abstracts with Programs. Vol. 46, No. 6, p. 365

Mahoney, J. Brian, Haggart, James W., Link, Paul K., Fanning, C. Mark, and Kimbrough, David L., 2014, Late Cretaceous basin evolution along the western margin of the Insular Superterrane: the Nanaimo Group, British Columbia;Geological Society of America Abstracts with Programs. Vol. 46, No. 6, p. 34.

Mahoney, J. Brian, Link, Paul K., and Yonkee, Adolph, 2014, Neoproterozoic-Cambrian tectonic evolution of the northern Rocky Mountains: the dynamics of rifting along western Laurentian margin;Geological Society of America Abstracts with Programs. Vol. 46, No. 6, p. 763.

Hass, Jacob W.*, Rasmussen, Amy K..*, Mahoney, J. Brian, and Syverson, Kent M., 2014, Regional petrographic analysis of Cambrian sandstone in Minnesota and Wisconsin: quantifying mineralogy and potential sources of airborne particulate matter within "frac sand" targets: Geological Society of America Abstracts with Programs. Vol. 46, No. 4, p.52.

Mahoney, J. Brian, Pignotta, Geoffrey, Ihinger, Phillip D., Wittkop, Chad, Taylor, Samantha S.*, and Leistikow, April*, 2013, Advanced undergraduate geologic mapping: the use of collaborative EDMAP projects at the University of Wisconsin-Eau Claire;Geological Society of America Abstracts with Programs, Vol. 45, No. 7, p. 377.

Mahoney, J. B., Haggart, J.W., Kimbrough, D.L., and Grove, M., 2013, Cause and effect: Late Cretaceous tectonic inversion and basin history in the southern Canadian Cordillera;Geological Society of America Abstracts with Programs, Vol. 45, No. 7, p. 517.

Mahoney, J. Brian, Link, Paul K., Todt, Mary, K.*, Taylor, Samantha S.*, and Balgord, Elizabeth*, 2013, Neoproterozoic to Cambrian passive margin? Evidence for active tectonism during the Sauk transgression in central Idaho and Montana;Geological Society of America Abstracts with Programs, Vol. 45, No. 7, p. 166.

Kimbrough, David L., Grove, Marty, Mahoney, J. Brian, Surpless, Kathleen, 2013, Laramide deformation of forearc basin-accretionary prism strata reflected in detrital zircon U-Pb provenance of the Late Cretaceous Great Valley Group;Geological Society of America Abstracts with Programs, Vol. 45, No. 7, p. 518.

Wenell, Beth*, Yoo, K, Aufdenkampe, A, Mahoney, J. B., and Lepak, L.*, 2013, Mineral weathering, elemental transport, and production of mineral surface area in a schist bedrock weathering profile, Piedmont Pennsylvania; Geological Society of America Abstracts with Programs, Vol. 45, No. 7, p.408.

Lepak, L.*, Wenell, Beth*, Mahoney, J. B., Yoo,K, and Aufdenkampe, A, 2013, Chemical weathering in heterogeneous schist bedrock; Geological Society of America Abstracts with Programs, Vol. 45, No. 7, p.0

Moore, R.J.*, Rasmussen, A.K.*, Mahoney, J.B., and Syverson, K.M., 2013, Petrographic analysis of Cambrian sandstone cement in western Wisconsin: Implications for the composition and quality of frac sand: Geological Society of America Abstracts with Programs Vol. 45, No. 4.

Mahoney, J. Brian, Nelson, JoAnne, Gehrels, George E., Pecha, Mark, Diakow, Larry, Karl, Susan M., van Staal, C.R., Angen, Joel*, and Tochilin, Claire, 2012, Geochronologic constraints on the early Paleozoic evolution of the southern Alexander terrane, northwestern coastal British Columbia;Geological Society of America Abstracts with Programs. Vol. 44, No. 7, p.383.

Taylor, Samantha S.*, Mahoney, J. Brian, Balgord, Elizabeth*, Pignotta, Geoffrey, 2012, Geologic mapping in the footsteps of Lewis and Clark: Flathead/Belt relationships constrain the nature of sub-Cambrian paleotopography, Lewis and Clark Pass, Montana;Geological Society of America Abstracts with Programs. Vol. 44, No. 7, p.131.

Link, Paul K., Yonkee, Adolph, Dehler, Carol M., Mahoney, J. Brian, Balgord, Elizabeth, Keeley, Joshua A., and Mahon, Robert C., 2012, Cryogenian to Ordovician detrital-zircon provenance of the rifting Cordilleran margin, Montana, Idaho and Utah;Geological Society of America Abstracts with Programs. Vol. 44, No. 7, p.378.

Mahoney, J. Brian, 2011, The TIES (Thematic Interdisciplinary Experiential Semester) Program: A New Concept in Experiential Immersion Education, Geological Society of America Abstracts with Programs, Vol. 43, No. 5, p. 23.

Mahoney, J. Brian, Nelson, J., Gehrels, G., Karl, S.M., Diakow, L., and Angen, J., 2011, Paleozoic Evolution of the Southern Alexander Terrane, Northwest British Columbia, Geological Society of America Abstracts with Programs, Vol. 43, No. 5, p. 440.

Ihinger, P., Mahoney, J.B., Johnson, B.R.*, Kohel, C.*, Guy, A.K*., Kimbrough, D.L., and Friedman, R.M., 2011, Late Cretaceous Magmatism in Southwest Montana: the Boulder Batholith and Elkhorn Mountains Volcanics, Geological Society of America Abstracts with Programs, Vol. 43, No. 5, p. 647.

Pignotta, G., Mahoney, J.B., and Meyers, J.L.*, 2011, Characterization of a Late Paleozoic Arc Section in the Terrace-Kitimat area, British Columbia, Geological Society of America Abstracts with Programs, Vol. 43, No. 5, p. 440.

Meyers, J.L.*, Pignotta, G., Friedman, R.M., and Mahoney, J. Brian, 2010, Geochemical characterization and geochronology of the Paleozoic Mount Atree volcanic complex, Terrace, British Columbia: Geological Society of America Abstracts with Programs, Vol. 42, No. 5, p. 477.

Balgord, Elizabeth A.*, Mahoney, J. Brian, and Gingras, M., 2009, Detrital zircon evidence requires revision of Belt stratigraphy in southwestern Montana;Geological Society of America Abstracts with Programs, Vol. 41, No. 7, p. 590.

Balgord, Elizabeth A.*, Forgette, Michelle M.*, Mahoney, J. Brian, Ihinger, Phil D., Kimbrough, D., 2008, Redefinition of the Precambrian-Cambrian Contact in Southwestern Montana: Geological Society of America Abstracts with Programs, vol. 40, no. 6, p. 167.

MacLaurin, Kate I.*, Forgette, Michelle M.*, Mustard, Peter, Mahoney, J. Brian, Haggart, James W., 2008, Reconstruction of Early Cretaceous Basin Configuration in the Methow and Tyaughton Basin, British Columbia: Geological Society of America Abstracts with Programs, vol. 40, no. 6, p. 167.

Ramos, V., Mahoney, J. B., Kimbrough, D., Lovera, O., Grove, M., 2007, Detrital zircons from Neogene synorogenic deposits reveal the uplift history of the highest Andes, Mendoza, Argentina;Arizona Geological Society Ores and Orogenesis Symposium, p. 127.

Haggart, J.W., Mahoney, J.B., Schroder-Adams, C., Kimbrough, D., Grove, M., 2007, Cretaceous tectonic evolution of Insular Belt of Canada constrained by zircon provenance analysis;Arizona Geological Society Ores and Orogenesis Symposium, p. 145.

Mahoney, J. B., Haggart, J.W. Kimbrough, D., Grove, M., 2007, Provenance Constraints on the Mesozoic-Cenozoic Tectonic Evolution of the Queen Charlotte Islands Region;Eos Trans. AGU, 88(23), Jt. Assem. Suppl., Abstract T41C-01.

Mustard, P., Mahoney, J. B., Haggart, J., Kimbrough, D., Grove, M., Fanning, M., 2007, Detailed Provenance Analysis Constrains Variations in Basin-Wide Deposition Trends And Source Area Uplift: The Late Cretaceous Nanaimo Basin, Southwest British Columbia, Canada;Eos Trans. AGU, 88(23), Jt. Assem. Suppl., Abstract T41C-02.
Kimbrough, D., Grove, M., Gehrels, G., Dorsey, R., House, K P., Pearthree, P A., Spencer, J. E., Mahoney, B., 2007, Detrital Zircon Record of Colorado River Incision; Eos Trans. AGU, 88(23), Jt. Assem. Suppl., Abstract T41C-03.

Kjos, A.R.*, Maclaurin, C.I.*, Kohel, C.A.*, Nawikas, J.M.*, Stoltz, J.M.*, Mahoney, J. B., and Ihinger, P.D., 2006, Reassessment of the Belt Supergroup: a stratigraphic analysis of the Devil's Fence Anticlinorium, Southwest Montana [an EDMAP project]; Geological Society of America Abstracts with Programs, vol. 37, no. 7, p. 500.

Mustard, P.S. Mahoney, J.B., Haggart, J.W., Kimbrough, D.L., Grove, M., and Fanning, C.M., 2006, Utilizing detailed provenance analysis to constrain variations in basin-wide depositional architecture: the Late Cretaceous Nanaimo Basin, southwestern British Columbia, Canada;Geological Society of America Abstracts with Programs, vol. 37, no. 7, p. 503.

Mahoney, J. Brian, Kimbrough, David L., Grove, Marty, Jacobson, Carl E., and Mustard, Peter S., 2006, Segmentation of the continental arc: Late Cretaceous-Eocene denudation of the Peninsular Ranges batholith of southern and Baja California;Geological Society of America Speciality Meetings (Backbone of the Americas) Abstracts with Programs, No. 2., p. 107.

Mahoney, J. Brian, Gordee, S.*, Haggart, J.W., Friedman, R.M., Diakow, Larry, Woodsworth, G.J., 2006, Jurassic-Tertiary evolution of the central Coast Plutonic Complex: Controls on over 120 million years of magmatism;Geological Society of America Speciality Meetings (Backbone of the Americas) Abstracts with Programs, No. 2., p. 24.

Lovera, Oscar, M., Grove, Marty, Kimbrough, David L., Mahoney, J. Brian, Abbott, Pat, Jacobson, Carl E., Nourse, Jon A., and Gehrels, G.A., 2006, Segmentation of the continental arc: Late Cretaceous orogenic exhumation patterns in the North American Cordillera; Geological Society of America Speciality Meetings (Backbone of the Americas) Abstracts with Programs, No. 2., p. 36.

Mahoney, J. Brian, Kimbrough, David L., Grove, Marty, Jacobson, Carl E., and Mustard, Peter S., 2005, Variations in Late Cretaceous batholith exhumation patterns along the western North American margin;Geological Society of America Abstracts with Programs, vol. 36, no. 7, p. 482.

Nawikas, J.M.*, Kjos, A.R.*, Kohel, C.A.*, MacLaurin, C.I.*, Stolz, J.M.*, Ihinger, P.D., and Mahoney, J.B., 2005, Structural and evolution of the Helena salient: New geologic mapping in the Devil's Fence anticlinorium;Geological Society of America Abstracts with Programs, vol. 36, no. 7, p. 76.

Reed, S.R.*, Kjos, A.R.*, Snyder, L.D., Andersone, R.G., Mahoney, J.B., McNicoll, V.J., and Simpson, K., 2005, Record for Mesozoic orogeny and back-arc basin formation and magmatism in western Stikinia: Evidence from strata at John Peaks, eastern Iskut River area, northwestern B.C.; Geological Society of America Abstracts with Programs, vol. 36, no. 7, p. 83

Hooper, Robert L., and Mahoney, J. Brian, 2005, A coordinated TEM and ICPMS study of metal sequestion in colloids and nanoparticles in the lower Coeur d'Alene river valley, northern Idaho; Geological Society of America Abstracts with Programs, vol. 36, no. 7, p. 324.

Anderson, T.H., and Mahoney, J. Brian, 2004, Late Jurassic transtensional basins along the margin of western North America: An indication of sinistral lateral faulting from Alaska to the Gulf of Mexico; Geological Society of America Abstracts with Programs, vol. 35, no. 7, p. 511.

Johnson, B.*, Ihinger, P.D., and Mahoney, J. Brian, 2004, Reexamining the geochemistry and geochronology of the Late Cretaceous Boulder Batholith, Montana; Geological Society of America Abstracts with Programs, vol. 35, no. 7, p. 406.

Strumness, L.A.*, Hooper, R.L., and Mahoney, J. Brian, 2004, Contaminant pathways and metal sequestration patterns in the lower Coeur d'Alene river valley, Idaho: Mechanics of trace metal mobility; Eos Transactions, American Geophysical Union, volume 85, no. 17, Abstract H41E-04.

Mahoney, J. Brian, Prindiville, S.*, Troost, K.G., and Booth, D., 2003, Geochemical characteristics of glaciogenic sediments, Puget Lowland, Washington; Geological Society of America Abstracts with Programs, vol. 34, no. 7, p. 79.

Mahoney, J. Brian, Link, Paul Karl, Mustard, Peter S., and Fanning, C. Mark, 2003, Belt Supergroup detritus in the Nanaimo Group: a robust provenance tie to northern latitudes; Geological Society of America Abstracts with Programs, vol. 34, no. 7, p. 92.

Mahoney, J.B., Weis, D., Kieffer, B., Friedman, R.M., Pretorius, W., Scoates, J., Goolaerts, A., and Maerschalk, C., 2003, Ongoing sotopic characterization of USGS standards: MC-ICPMS and TIMS data from the Pacific Centre for Geochemical and Isotopic Research, University of British Columbia; Geological Society of America Abstracts with Programs, vol. 34, no. 7, p. 243.

Gordee, S.M.*, Mahoney, J.B., Diakow, L.J., Friedman, R.M., Haggart, J.W., Woodsworth, G.M., and Villeneuve, M., 2003, Magmatic episodicity in the eastern Coast Plutonic Complex, Bella Coola, British Columbia; Geological Society of America Abstracts with Programs, vol. 34, no. 7, p. 390.

Mahoney, J.B., Link, P.K., Riesterer, J.K., Enkin, R.J., and Haskin, M.L., 2003, The paleogeographic significance of the Silverquick/Powell Creek Succession, south-central British Columbia; Geological Association of Canada/Mineralogical Association of Canada Abstracts Volume 28, No. 754.

Mahoney, J.B., Weis, D., Kieffer, B., Friedman, R.M., Pretorius, W., Scoates, J., Goolaerts, A., and Maerschalk, C., 2003, Isotopic characterization of USGS standards: Preliminary MC-ICPMS and TIMS data from the Pacific Centre for Geochemical and Isotopic Research, University of British Columbia; Geological Association of Canada/Mineralogical Association of Canada Abstracts Volume 28, No. 755.

Gordee, S.M.*, Mahoney, J.B., Diakow, L.J., Haggart, J.W., Friedman, R.M., Woodsworth, G.M., and Villeneuve, M., 2003, Magmatic evolution of the eastern Coast Plutonic Complex, Bella Coola, British Columbia; Geological Association of Canada/Mineralogical Association of Canada Abstracts Volume 28, No. 743.

Mustard, P.S., Mahoney, J.B., Link, P.K., Fanning, C.M., and Friedman, R.M., 2003, Provenance evolution &direct North American linkage of the Nanaimo Group, southwest B.C.: implications for Late Cretaceous paleogeography &translation along the North American margin; Geological Association of Canada/Mineralogical Association of Canada Abstracts Volume 28, No. 567.

Baker, J., Enkin, R.J., and Mahoney, J.B., 2003, Late Cretaceous Powell Creek formation along the Taseko River confirm controversial paleomagnetic results from Mount Tatlow and Churn Creek: Further evidence on the Baja-BC model;Geological Association of Canada/Mineralogical Association of Canada Abstracts Volume 28, No. 589.

Mahoney, J. Brian, Link, Paul Karl, Mustard, Peter S., Fanning, C. Mark, 2003, Provenance of the Nanaimo Group: A Late Cretaceous linkage to the northern North American craton: Geological Society of America Abstracts with Programs, vol. 35, no. 4, pg. 81.

Mustard, Peter S., Mahoney, J. Brian, Fanning, C.M, and Friedman, R.M., 2003, A transport stratigraphy in the Upper Cretaceous Nanaimo Group, British Columbia? –the evidence and implications to Late Cretaceous large latitudinal translation hypotheses: Geological Society of America Abstracts with Programs, vol. 35, no. 4, pg. 82.

Mahoney, J. B., Haugerud, R.A., Friedman, R.M., and Tabor, R.W., 2002, Late Jurassic terrane linkages in the North Cascades: Newby Group is Quesnellia?; Geological Society of America Abstracts with Programs, vol. 33, no. 5, p. 95.

Haugerud, R.A., Mahoney, J. B., and Tabor, R.W., 2002, Stratigraphic record of Cretaceous tectonics in the Methow Block, North Cascades, Washington;Geological Society of America Abstracts with Programs, vol. 33, no. 5, p. 95.

Mahoney, J.B., Enkin, R.J., and Haskin, M.*, 2001, Paleomagnetic constraints on terrane translation: the Churn Creek Succession in south central British Columbia; Eos Transactions, American Geophysical Union, volume 82, no. 47, Abstract GP11A-0192.

Hooper, R.L. and Mahoney, J.B., 2001, Metal transport, heavy metal speciation and microbial fixation through fluvial subenvironments, Lower Coeur D'Alene River Valley, Idaho;Eos Transactions, American Geophysical Union, volume 82, no. 47, Abstract B32B-0119.

Hooper, R.L., and Mahoney, J. Brian, 2000, Constraining contaminant transport: Lead and zinc speciation in fluvial subenvironments, lower Coeur d'Alene river valley, Idaho; Geological Society of America Abstracts with Programs, vol. 32, no. 6, p.125.

Haskin, Michelle L.*, Mustard, P.S., Mahoney, J.B., Enkin, R.J., and Friedman, R., 2000, Multi-disciplinary correlaton of mid-Cretaceous volcanic packages across the Insular/Intermontane superterrane boundary: Implications for the Baja B.C. hypothesis; Geological Society of America Abstracts with Programs, vol. 32, no. 6, p.107.

Mahoney, J. Brian, Brandup, Jody*, Troost, Kathy, Booth, Derek B., 2000, Geochemical discrimination of episodic glaciofluvial sedimentation, Puget Lowland, Washington;, vol. 32, no. 6, p 27.

Enkin, Randolph J., Baker, Judith, Mahoney, J. Brian, 2000, Shallow Cretaceous paleomagnetic inclination observed at Churn Creek eliminates great displacements along the Yalakom Fault; Geological Society of America Abstracts with Programs, vol. 32, no. 6, p 12.

Haggart, James W., Mahoney, J. Brian, Justason, A. J., Rowe, C.*, Schmidt, M.*, 2000, Stratigraphy and structure of Mesozoic strata, eastern margin of Nass River map-area (103P), British Columbia;Geological Society of America Abstracts with Programs, vol. 32, no. 6, p 16.

Klinger, Melissa*, Mahoney, J. Brian, Kimbrough, D. L., 2000, Whole rock geochemistry of conglomerate clasts from Valle Group Cretaceous forearc basin strata, Baja California;Geological Society of America Abstracts with Programs, vol. 32, no. 6, p 22.

McClelland, W. C., Journeay, J. M., Mahoney, J. B., 2000, Discordant detrital zircon ages from the Cretaceous Cayoosh Assemblage, Southern Coast Belt, British Columbia; Geological Society of America Abstracts with Programs, vol. 32, no. 6, p. 29.

Mustard, Peter S., Mahoney, J. B., Fanning, C. M., Friedman, R. M., McNicoll, V. J., 2000, Nanaimo Group, Southwest British Columbia: A Late Cretaceous basin with continuous northern provenance signature; Geological Society of America Abstracts with Programs, vol. 32, no. 6, p. 57.

Link, P.K., Mahoney, J.B., Geslin, J.K., and Fanning, C.M., 1999, Interpreting detrital zircon plots: Examples from Cretaceous of British Columbia and the Neogene of Idaho: Geological Society of America Abstracts with Programs, vol. 31, no. 3, p. A-300.

Haskin, Michelle L.*, Enkin, R. J., Baker, J., Mahoney, J. B., Friedman, R. M., Mustard, P. S., 1999, Paleomagnetism of the Lower Cretaceous package at Churn Creek/Empire Valley, south-central B.C.: Implications for the Baja B.C. hypothesis;

Morrison, Jean M.*, Hooper, Robert L., Mahoney, J. Brian, Rowe, Carrie E.*, 1999, Heavy metal partitioning in heavily contaminated lead/zinc mine tailings: What really happens during sequential extractions?;Geological Society of America Abstracts with Programs, vol. 31, no. 3, p. A-409.

Rowe, Carrie E.*, Mahoney, J. B., Hooper, Robert L., Morrison, Jean M.*, 1999, Heavy metal partitioning and transport in the Coeur d'Alene river valley, northern Idaho;Geological Society of America Abstracts with Programs, vol. 31, no. 3, p. A-410.

Schmidt, M. J.*, Mahoney, J. B., Haskin, M. L., Mustard, P. S., 1999, Geochemical characterization of the Cretaceous Spences Bridge Group: Potential linkage among terranes in the Canadian Cordillera; Geological Society of America Abstracts with Programs, vol. 31, no. 3, p. A-116.

Dahl, Eric J.*, Havholm, K.G., and Mahoney, J.B., 1999, Stratigraphy of the Upper Cambrian Lone Rock Formation, Western Wisconsin, Geological Society of America Abstracts with Programs, vol. 31, no. 3, p. x

Mahoney, J. Brian, Kimbrough, D.L., Mustard, P.S., Smith, D.P., and Moore, T.E., 1998, Comparitive evolution of Cretaceous basins in Baja California, Mexico, and British Columbia: Implications for terrane translation, Geological Society of America Abstracts with Programs, vol. 30, no. 6, p. 356.

Riesterer, J.W.*, Link, P.K., Mahoney, J. B., Danielson, T.J., and Hickson, C.J., 1998, Late Cretaceous Silverquick conglomerate and Powell Creek volcanics, Churn Creek: A potential link between Intermontane and Insular superterranes, Geological Society of America Abstracts with Programs, vol. 30, no. 6, p. 355.

Mahoney, J. Brian, Mustard, P.S., Haggart, J.W., Friedman, R.M., Fanning, M., and McNicoll, V.J., 1997, Archean zircon in Upper Cretaceous sediments of the Canadian Cordillera: How many are enough?; Geological Society of America Abstracts with Programs, vol. 29, no. 6, p. 278.

Peterson, James J.*, Mahoney, J. Brian, and Haugerud, Ralph A., 1997, Constraints on Late Cretaceous movement on the Pasayten Fault: the Pipestone Canyon Formation, Washington;Geological Society of America Abstracts with Programs, vol. 29, no. 6, p. 278.

Kiessling, Mark*, Mahoney, J. Brian, and Link, Paul K., 1997, Evolution of the Methow terrane in the Late Cretaceous: Stratigraphy and petrology of the Pasayten Group, southern Methow terrane, B.C.; Geological Society of America Abstracts with Programs, vol. 29, no. 6, p. 278.

Paddock, J.J.*, Havholm, K.G., and Mahoney, J.B., 1997, Cycles within the Upper Cambrian Lone Rock Formation: Sedimentologic response to fine-scale sea-level changes?; Geological Society of America Abstracts with Programs, vol. 28, no. 3, p. xx.

Rantala, Heidi*, Hooper, Robert L., Mahoney, J. Brian, and Box, Stephen, 1996, Partitioning of Heavy Metals with Tailings-Contaminated Floodplain Sediment, Coeur d'Alene River Valley, Idaho; Geological Society of America Abstracts with Programs, vol. 28, no. 7, p. 97.

Mahoney, J.B., Haugerud, R.A., Friedman, R.M., and Tabor, R.W., 1996, Newby Group: an Upper Jurassic volcanic arc assemblage in the southern Methow terrane, Washington; Geological Society of America Abstracts with Programs, vol. 28, no. 5, p. 88.

Mahoney, J. Brian, Hooper, Robert L., and Michael, G.S.*, 1995, Nd-Sr isotopic signatures of fine-grained clastic strata: Sensitive indicators of basin evolution; Geological Society of America Abstracts with Programs, vol. 27, no. 6, p. 462.

Mahoney, J. Brian, and DeBari, Susan M., 1995, Geochemical and isotopic characteristics of Early to Middle Jurassic volcanism in southern British Columbia: Relationship of the Bonanza and Harrison arc systems; Geological Association of Canada Abstracts with Programs, vol. 20, p. A-65.

Mahoney, J. Brian, Havholm, Karen G., Kiessling, M.A.*, and Hodek, D. J.*, 1995, Regional facies variations of the Upper Cambrian Eau Claire Formation, Western Wisconsin: A preliminary assessment; Geological Society of America Abstracts with Programs, vol. 27, no. 3, p. 71.

Kiessling, Mark A.*, Havholm, Karen G., and Mahoney, J. Brian, 1995, A new look at the sedimentology and stratigraphy of the Eau Claire Formation, Tilden area, Chippewa Co., Wisconsin; Geological Society of America Abstracts with Programs, vol. 27, no. 3, p. 64.

Mahoney, J. Brian and Journeay, J. Murray, 1994, Regional tectonostratigraphic correlation of Middle Jurassic strata: Constraints on terrane linkages in the southern Canadian Cordillera; Geological Society of America Abstracts with Programs, Vol. 26, No. 7, p. A148.

Friedman, Richard M., Mahoney, J. Brian, and Cui, Yao, 1994, Magmatic evolution of the southern Coast Belt: Constraints from geochronology and Nd-Sr isotopic systematics of plutons of the southern Coast Plutonic Complex; Geological Society of America Abstracts with Programs, vol. 26, no. 7, p. A368.

Mahoney, J. Brian, 1994, Nd/Sr isotopic correlations of fine-grained clastic sediments in western Pacific marginal basins: a potentially powerful stratigraphic tool; Abstracts of the Eighth International Conference on Geochronology, Cosmoschronology, and Isotope Geology, U.S. Geological Survey Circular 1107, p. 202.

Mahoney, J.B., 1993, The Dewdney Creek Formation, southwestern British Columbia: A record of Middle Jurassic volcanic activity on the margin of North America;Geological Association of Canada Abstracts with Programs, vol. 18.

Mahoney, J. Brian, 1993, Facies reconstructions in the Ladner Group, southwestern British Columbia: Evidence for a Middle Jurassic volcanic arc on the western edge of Quesnellia?; Geological Society of America Abstracts with Programs, vol. 25.

Geslin, J.K., Link, P.K., Burton, B.R., and Mahoney, J.B., 1993, The Pennsylvanian and Permian Oquirrh-Wood River Basin: Geological Society of America Abstracts with Programs, vol. 25.

Mahoney, J. Brian, Burton, B.R., O'Brien, J.P., and Link, P.K., 1991, Pennsylvanian and Permian Paleogeography of south-central Idaho: the Wood River basin; Pacific Section Society of Economic Paleontologists and Mineralogists Abstracts with Programs, American Association of Petroleum Geologists Bulletin, vol. 75, no. 2, p. 373.

Mahoney, J. Brian, Link, Paul K., and Burton, Bradford R., 1990, Tectonic setting and sedimentologic history of an epicratonic basin in south-central Idaho: Tentative correlations of Late Paleozoic basins on the western edge of North America: Geological Association of Canada Program with Abstracts, vol. 15, p. 82.

Link, Paul K., Mahoney, J. Brian, and Burton, Bradford R., 1990, Sediment-hosted mineral deposits of the eastern Hailey 2 degree quadrangle, south-central Idaho; Geological Association of Canada Program with Abstracts, vol. 15, p. 77.

Link, Paul Karl, Mahoney, J. Brian, and Burton, Bradford R., 1989, Pennsylvanian-Permian tectonics, south-central Idaho: The Wood River basin and Copper Basin highland;Geological Society of America Abstracts with Programs, vol. 21, no. 5.

Mahoney, J. Brian and Sengebush, R.M., 1988, Stratigraphy of the Lower Permian Grand Prize Formation: Geological Society of America Abstracts with Programs, vol. 20, no. 6.

Mahoney, J. Brian, and Link, Paul Karl, 1987, Reconstruction of the Permian Wood River Basin, south-central Idaho: tectonic implications; Geological Society of America Abstracts with Programs, vol. 19, no. 5, p. 318.

Link, Paul Karl, and Mahoney, J. Brian, 1987, Structural stacking of the Smoky Mountains, south-central Idaho: evidence for both Mesozoic thrusting and Eocene extension faults;Geological Society of America Abstracts with Programs, vol. 19, no. 5, p. 315.

Mahoney, J. Brian, Geslin, J.K., and Link, P.K., 1987, Upper Paleozoic basin reconstruction in central Idaho: preliminary stratigraphic correlation of allochthonous Permian strata;American Association of Petroleum Geologists Abstracts with Programs, vol. 71, no. 5, p. 587.

Mahoney, J. Brian, and Link, Paul Karl, 1987, Preliminary basin analysis of the Late Pennsylvanian-Permian Wood River Basin, south-central Idaho;American Association of Petroleum Geologists Abstracts with Programs, vol. 71, no. 4.

Link, P.K., Stewart, D.E., Geslin, J.K., Mahoney, J.B., and Darling, R.S., 1986, Paleozoic allochthons on the east edge of the Idaho Batholith, Smoky Mountains, Blaine and Camas Counties, Idaho;Geological Society of America Abstracts with Programs, vol. 18, no. 5, p. 391.


Invited Conferences:

Continental Tectonics and Magmatism of the Jurassic North American Cordillera, 1993 Penrose Conference, Lake Havasu City, Arizona
Tectonic Evolution of the Coast Mountain Orogen, 1992 Penrose Conference, Bowen Island, British Columbia

Organized Conferences:

Terrane Accretion along the Western Cordilleran Margin: Constraints on Timing and Displacement, 1999 Penrose Conference, Winthrop, Washington (principal organizer)

M.Sc. Theses Supervised:

Maclaurin, C.I., 2009, Sedimentology, Stratigraphy, Provenance of the Lower Cretaceous Jackass Mountain Group, Chilko Lake area, British Columbia;Simon Fraser University M.S. thesis

Gordee, S.M., 2005, Volcanostratigraphy, age, and geologic setting of the Lower –Middle Jurassic Upper Hazelton Group, west-central British Columbia;University of British Columbia M.Sc. thesis

Haskin, M.L., 2001, Paleomagnetic signature of Cretaceous rocks along the Insular/Intermontane superterrane boundary, southern Chilcotin Plateau, Simon Fraser University M.S. thesis

Peterson, J.J., 1999, Stratigraphy and structure of the Pipestone Canyon Formation, southern Methow terrane, Washington;Western Washington University M.S. thesis.

Riesterer, J.W., 1999, Stratigraphy, structure, and geochemistry of Albian-Cenomanian strata in Churn Creek, southwestern British Columbia;Idaho State University M.S. thesis

Kiessling, M.D., 1998, Stratigraphic framework of the Pasayten Group, Manning Park, British Columbia;Idaho State University M.S. thesis

 
Collaborative Student/Faculty Research (1995-2015):
*all research presented at the annual University of Wisconsin-Eau Claire Student/Faculty Collaborative Research Symposium

Justin Poirier and Ray Fliflet, 2016, Diagenetic History of Cambrian Sandstone Units in Western Wisconsin: Implications for Resource Extraction

Carly Mueller, 2016, New Zircon U-PB Ages for the Choiyoi Silicic Large Igneous Province of Argentina that Define a Strong Episodic History of Magmatism and Mass Extinction in the Permo-Triassic Time

Kaelyn Blotz, 2016, Quantifying Grain Shape Characteristics and Fragmentation in Raw and Processed Frac Sand from Western Wisconsin

Samantha Bartnik, Adam Wiest, and Carly Mueller, 2016, Tracking Basin Inversion in the RetroArc Foreland Basin: Integrated Provenance, Studies in the Cacheuta Basin, South-Central Andes

Samantha Bartnik, Adam Wiest, Carly Mueller, 2016, Surface Water and Groundwater Chemistry of Western Wisconsin: Establishing an Environmental Baseline

Alexander Hutter, 2015, Cuenca Uspallata: an Intermontane Basin Records Episodic Uplift of the Cordillera Frontal and Precordillera in the Late Miocene

Justin Poirier and Rachel Fliflet, 2015, Interstitial Cement Composition within Cambrian Sandstone of Western Wisconsin and Its Implication on Potential Airborne Particulate Matter

Kaelyn Blotz, 2015, Quantifying Grain Shape Characteristics and Fragmentation in Raw and Processed Frac Sand from Western Wisconsin

Ellen Katherine Buelow, Samantha Sue Taylor, Brian Christopher Nehring, 2014, International Fellows Program Argentina 2014: Educational Outreach Coupled with Andean Basin Research

Jacob Walter Haas, 2014, Regional Petrographic Analysis of Cambrian Sandstone in Minnesota and Wisconsin: Quantifying Mineralogy and Potential Sources of Airborne Particulate Matter within "Frac Sand" Targets
(co-supervised with K. Syverson)

April Rose Leistikow, 2014, Tectnostratigraphic Evolution of the Montana Fold and Thrust Belt South of the Helena Salient: Proterozoic/Cambrian Structure and Stratigraphy West of Dillon, Montana (co-supervised with G. Pignotta)

Franklin L. Heaton, 2013, Sediment Geochemistry of Petroleum Source Rocks: A Potential Exploration Tool

Xai Her and Brian Christopher Nehring, 2013, Geochemical Analysis of Nicaragua's Volcanism in Comparison to Contiguous Volcanos in the Central American Arc

Lindsey Ann Lepak, 2013, Chemical Weathering in Heterogeneous Bedrock
Rebecca Jean Moore and Amy Kathleen Rasmussen, 2013, Petrographic Analysis of Cambrian Sandstone Cement in Western Wisconsin: Implications for the Composition and Quality of Frac Sand (co-supervised with K. Syverson)

Samantha Sue Taylor, 2013, Stratigraphic and Structural Interpretations of the Prairie du Chien Group, Western WI and Eastern MN

Samantha Sue Taylor and Rebecca Jean Moore, 2013, Stratigraphic and Structural Analysis of the Phosphoria Formation, Southeast Idaho

Samantha Sue Taylor, Brian Christopher Nehring, Amy Kathleen Rasmussen, and Rebecca Jean Moore, 2013, Basal Cambrian Stratigraphy in Western Montana, Evidence of Pre-Cambrian Uplift (co-supervised with G. Pignotta)

Olivia Iverson, 2012, Neogene Basin Evolution in the Las Peñas basin, Salagasta Region, Mendoza, Argentina.

Kris Benusa, 2012, Basin Evolution and Provenance Variations in the Miocene Atuel Basin, El Sosneado Region, Mendoza, Argentina.

Olivia Iverson, 2011, Reassessment of Triassic and Jurassic Volcanic Strata in the Dease Lake Region, Northern British Columbia

Jessica Meyers and Bryan Hardel, 2011, Geochemical Characterization and Geochronology of the Paleozoic Mt. Attree Volcanic Complex, Terrace, British Columbia (co-supervised with G. Pignotta)

Julia Potter, 2010, Determining the Origin and Evolution of the Avon Volcanic Complex, Southwest Montana (co-supervised with L. Snyder).

Audrey Mohr, 2010, Geochemical Analysis of a Glacial Lake Benson Varve Sequence, West-Central Minnesota (co-supervised with K. Syverson)

Nicholas King, Julia Potter, Jessica Meyers, Brennan Kadulski, Elizabeth Balgord, and Bryan Hardel, 2010, Geologic Analysis of the Northern Margin of the Boulder Batholith II: Geologic Map of the Esmerelda Hills Quadrangle (co-supervised with P Ihinger and G. Pignotta)

Brennan Kadulski and Julia Potter, 2010, Constraining Mineral Potential of the Alexander Terrane Near Porcher Island, Northwestern British Colombia
Elizabeth Balgord, 2009, Reinterpreting Cambrian Paleogeography, Southwest Montana. (co-supervised with P.D. Ihinger)

Elizabeth Balgord, Julia Potter, Carrie Weiss, Nathan Heuer, John Wrass, 2009, Geologic Exploration of the Northern Central American Arc: A Transect from the Guatemalan Highland into the Back Arc Rainforests. (co-supervised with L. Snyder).

Taylor Crist, Bryan Hardel, Brennan Kadulski, Troy Moseley, Alex Thompson, 2009, Exploring Belize and its Barrier Reef: Formation, Ecosystem, Culture, and Human Influence on the Reef. (co-supervised with L. Snyder).

Julia Potter, 2009, Geochemical Characterization and Geochronology of the Avon Volcanic Complex, Southwestern Montana. (co-supervised with L. Snyder).

Elizabeth Balgord, Julia Potter, Michelle Forgette, Nicholas King, 2009, Geological Analysis of the Northern Margin of the Boulder Batholith: An EdMap Project. (co-supervised with P Ihinger and G. Pignotta)

Elizabeth Balgord, 2009, Examining the Genesis of the Middle Devonian Nickel-Molybdenum (NiMo) Deposit, Selwyn Basin, Yukon.

Elizabeth Balgord and Michelle Forgette, 2008, Redefinition of the Precambrian Cambrian Contact in Southwestern Montana (co-supervised with P.D. Ihinger)

Elizabeth Balgord, 2008, Modeling Middle Devonian Nickel Deposition in the Selwyn Basin, Northern Yukon (co-supervised with R.L. Hooper)

Michelle Forgette, 2008, Examining Cretaceous Strata of the Taylor Creek Group in British Columbia: Potential Connection of the Methow and Tyaughton Basins

Alex Guy, 2008, Geochemistry of the Elkhorn Mountains Volcanics: Insights into Late Cretaceous Magmatic Evolution of Southwestern Montana (co-supervised with P.D. Ihinger)

Brennan Kadulski, Anna Baker, Anne Gauer, Bridget Kelly, Crystal Nickel, Elizabeth Teutschmann, and Elizabeth Balgord, 2008, Geologic Evolution of the Argentinean Andes (co-supervised with Lori Snyder and Robert Hooper).

Adam Krieger and Brooke Fahrenkrog , 2008, Trace metal distribution within the fluvial levee samples in the Coeur d'Alene River, Idaho (co-supervised with R.L. Hooper)

Shane Peterson, Michelle Forgette, Bryan Hardel, Julia Potter, Phil Larson, Taylor Crist, and Heidi Stanek, 2008, Synorogenic Basin Evolution in the Cordillera Frontal, Argentina

Julia Potter, 2008, Detailed Geochemical Analysis of the Valle Group Forearc Basin, Baja California, Mexico (co-supervised with Jill Ferguson, and Lori D. Snyder)

Brandon Barber, Adam R. Kjos, Kate MacLaurin, Mark Nelson, 2007, Quantitative Analysis of Potential Economically Significant Mineralization Targets in the Whitesail Lake Mapping Area, British Columbia (co-supervised with R.L. Hooper and L.D. Snyder)

Alexandra Guy, 2007, Constraining Late Cretaceous Magmatic Evolution in Southwestern Montana (co-supervised with P.D. Ihinger)

Amanda LaGesse, Elizabeth Balgord, Jeremy Hinke, Matthew Chaffee, Crystal Nickel, Shane Peterson, and Aaron Rowland, 2007, A Geologic Investigation of Death Valley California (co-supervised with Chad Wittkop)

Amanda LaGesse, 2007, Rare Earth Element (REE) Geochemistry by Plasma Mass Spectroscopy using a High Resolution Inductively Coupled Plasma Mass Spectrometer (co-supervised with J. Ferguson)

Catherine MacLaurin, Adam Kjos, Christopher Kohel, Joe Nawikas, 2007, Stratigraphy and Provenance Across the Great Unconformity, Devil's Fence Anticlinorium, Southwest Montana: An EDMAP Project (co-supervised with P.D. Ihinger)

Catherine MacLaurin, 2007, The Magmatic Evolution of the Whitesail Lake Map Area: A Geochemical Analysis (co-supervised with R.L. Hooper and L.D. Snyder)

Catherine MacLaurin, Adam Kjos, and Brandon Barber, 2007, Geochronological Constraints on the Magmatic Evolution of the Southern and Western Whitesail Lake Map Area (NTS 93E) (co-supervised with R.L. Hooper and L.D. Snyder)

Adam R. Kjos, Kate MacLaurin, Mark Nelson, Travis Pickering, Alex Guy, 2006, Eruptive Activity of Montserrat: Examination of Deposits and Eruption Style (co-supervised with R.L. Hooper and L.D. Snyder)

Adam R. Kjos and Kate MacLaurin, 2006, Geologic Evolution of the Whitesail Lake Map Area: Structure, Geochemistry, and Geochronology

Christopher A. Kohel, 2006, Structural and Magmatic Evolution of the Helena Salient, New Mapping and Spatial Geochemical Analysis in the Devil's Fence Anticlinorium (co-supervised with P.D. Ihinger)

Gillian Krezoski, Michele Skahaug, Amanda D. La Gesse, Matthew Hysen, Krystina Engebos, and Jeremy Hinke, 2006, Geologic History and Carbonate Systems of Antigua in the Lesser Antilles (co-supervised with L.D. Snyder)

Amanda D. La Gesse, 2006, Materials Analysis for the Production of Glass

Kate MacLaurin, Chris Kohel, Adam Kjos, Joe Nawikas, and John Stoltz, 2006, Structural and Magmatic Evolution of the Helena Salient New Geologic Mapping in the Devil's Fence Anticlinorium (co-supervised with P.D. Ihinger)

Emily Hauser, 2005, Magmatic Evolution of the Whitesail Lake Map Area British Columbia (co-supervised with R.L. Hooper)

Morgan J. Herrick, 2005, Magmatic Characterization of the Warm Spring Mountain Pluton, Northwestern British Columbia (co-supervised with L.D. Snyder)

Christopher A. Kohel, 2005, Geology and Geochemistry of the Sagebrush Creek Stock: Constraints on the Timing of Late Cretaceous Magmatism and Deformation in the Rocky Mountain Foreland (co-supervised with P.D. Ihinger)

Joe Nawikas, 2005, Geologic Evolution of the Tacoma Park 7.5 Minute Quadrangle, SW Montana

Kali Pace-Graczyk, 2005, Fracture Orientations and Closed Depressions in St. Croix County, Wisconsin: Effects of Karst Landscapes in Hydrology

Suzanne Reed and Adam R. Kjos, 2005, Representative Stratigraphic Section of Lower-Middle Jurassic Hazelton Arc Volcanics of British Columbia (co-supervised with L.D. Snyder)

Emily Hauser, 2004, Magmatic Evolution of Central Coast Plutonic Complex
Christopher Kohel and Kali Pace-Graczyk, 2004, Geochemical and Geochronologic Analysis of Volcanic Suites of the Bella Coola Region, West-Central British Columbia

Laura Strumness and Jennifer Thornburg, 2004, Speciation and Mobility of Trace Metal Contamination in the Lower Coeur d'Alene River Valley, Idaho

Sarah Prindiville, 2004, Geochemical Characteristics of Glaciogenic Sediments, Puget Lowland, Washington

Sarah Gordee and Emily Hauser, 2003, Magmatic Evolution of the Eastern Coast Plutonic Complex, Bella Coola, British Columbia (93D).

Laura Strumness and Taryn Lopez, 2003, Lateral Variability in Heavy Metal Speciation within Lacustrine Environments, Lower Coeur d' Alene River Valley, Idaho (co-supervised with R.L. Hooper)

April Johnson, 2002, Characteristics of submarine mass-flow deposits adjacent to the Nifty volcanogenic massive sulphide occurrence, eastern Bella Coola map area, British Columbia

Sarah Gordee, 2002, Petrology of Granitic Suites in Eastern Bella Coola Area, British Columbia

Sarah Prindiville, 2001, Provenance Signature of Glaciofluvial Sediments, Puget Lowland, Washington

Brent Kabat and Katie Thornburg, 2001, Swan Lake Transect: Insight into Metal Speciation in the lower Couer d'Alene River Valley, Idaho (co-supervised with R.L. Hooper)

Matt Kromrey and David Hanson, 2001, GPS Mapping in Rugged Terrain: The Geronimo Frisbee Course, Kingston, New Mexico (co-supervised with S. Hartnett UWEC Geography Dept.)

Sarah Prindiville, 2001, Provenance Signature of Glaciofluvial Sediments, Puget Lowland, Washington

Jody Brandrup, 2000, Geochemical Analysis of Glaciofluvial Sedimentation, Puget Lowland, Washington: Constraints of Episodic Provenance Shifts

April D. Johnson, 2000,. Testing Large Scale Terrane Translation: Geochemical Provenance Analysis of the Cretaceous Jackass Mountain Group, Methow Terrane, southern British Columbia

Melissa Klinger, 2000, Geochemical Provenance Analysis of Conglomerate Clasts from Valle Group Cretaceous Forearc Basin Strata Baja California (co-supervised with David L. Kimbrough, San Diego State University)

Bjorn Lysne, 2000, Provenance of the Rosario Formation and Late Cretaceous Basin Evolution in San Diego, CA

Jean Morrison and Carrie Rowe,2000, Sequential Extraction Applied to Heavily Contaminated Lead and Zinc Mine Tailings: What Really Happens During Sequential Extraction (co-supervised with R.L Hooper)

Carrie Rowe, 2000, Clastic Dykes as Paleoslope Indicators in the Nanaimo Group, Hornby Island, British Columbia (co-supervised with Peter Mustard, Simon Fraser University)

Carrie Rowe and Jean Morrison, 2000, Heavy Metal Partitioning and Transport in the Coeur d'Alene River Valley, Coeur d' Alene Idaho (co-supervised with R.L. Hooper)

Michael Schmidt, 2000, Comparative Geochemistry of the Spences Bridge Group and Coeval Volcanic Rocks: Potential Constraints on Large-Scale Translation

Michael J. Schmidt and Isaac J. Vandergon, 2000, Structural and Geochemical Characterization of Tertiary Mafic Dikes in the Coast Belt and Western Bowser Basin, Nass River Area, British Columbia (co-supervised with L.D. Snyder)

Eric Dahl, 1999, Stratigraphic Variability in the Lone Rock Formation, Dunn and St. Croix Counties, Wisconsin (co-supervised with K.G. Havholm)

Dan Dahlman and Aaron Walczak, 1999, Geochemical Distinction of Glaciofluvial Sediments in the Puget Lowland

Jean Morrison, 1999, Petrographic Analysis of the Late Cretaceous Nanaimo Group of the Georgia Basin

Tina Pint, 1999, Stratigraphic and Structural Analysis of the Middle Jurassic Hazelton Group Nechako Plateau, British Columbia (co-supervised with L.D. Snyder)

Carrie Rowe, 1999, Clastic Dikes as Paleoslope Indicators in the Nanaimo Group, Hornby Island, British Columbia (co-supervised with Peter Mustard, Simon Fraser University)

Carrie Rowe and Jean Morrison, 1999, Speciation and Transport of the Heavy Metals in the Coeur d'Alene River Valley, Northern Idaho (co-supervised with R.L. Hooper)

Michael Schmidt, 1999, Comparative Geochemistry of the Spences Bridge Group and Coeval Volcanic Rocks of South-Central British Columbia

Sarah Tietz and Lauren Buchholz, 1999, Geochemical Characterization and Uplift History of the Okanogan Range Batholith, Washington (co-supervised with B.R. Burton)

Lance Bakken, 1998, Geochemistry and Petrology of the Boulder Batholith, Southwestern Montana (co-supervised with B.R. Burton)

Thomas J. Danielson, 1998, Geochemistry and Tectonic Setting of the Powell Creek Group, Southwestern British Columbia

Lee Delcore, Heather Golding, and Brian Hennings, 1998, Student Experience in Lithoprobe Seismic Refraction Experiment (co-supervised with R.L. Hooper)

Heather Golding, 1998, The Wonewoc Formation: Sedimentological Response to a Sea Level Lowstand (co-supervised with K.G. Havholm)

Michelle Haskin, 1998, Stratigraphy and Geochemistry of Eocene Endako Group Rocks at Four Localities in Central British Columbia (co-supervised with L.D. Snyder)

Steve Jenson, 1998, Sedimentology and Stratigraphy of the Lone Rock Formation in Trempeauleau County Wisconsin (co-supervised with K.G. Havholm)

Michael Schmidt, 1998, Geochemistry of the Spences Bridge Group, British Columbia
Lisa Sobczak and Carrie Rowe, 1998, Transport Pathways of Heavy Metal Contamination in Fluvial Sediments, Coeur d'Alene River, Northern Idaho (co-supervised with R.L.Hooper)

Aaron Walczak, 1998, Geochemical Distinction of Glaciofluvial Deposits of the Puget Lowland

Thomas J. Danielson, 1997, Comparative Geochemistry of the Powell Creek Group Volcanic Rocks and Petrographically Similar Clasts of the Conglomerate of Churn Creek

Scott P. Lehmann, 1997, Development of an Interactive Geologic Program on the Internet: Bringing Wisconsin Geology to the High Schools

Jeffrey Paddock, 1997, Cycles within the Upper Cambrian Lone Rock Formation

Heidi M. Rantala, 1997, Constraining heavy metal redistribution in fluvial sediments downstream from sulfide mining districts: Preliminary results from the Couer d'Alene River Valley Idaho (co-supervised with R.L. Hooper)

Matthew D. Tessar, 1997, Development of Three Dimensional Geologic Map Imagery

Aaron M. Walczak, 1997, Lithostratigraphy Analysis: Examination of Albian-Cenomanian Strata: The Jackass Mountain Group, British Columbia

David Hodek, 1996, Trace Fossil Assemblages within the Upper Cambrian Eau Claire Formation: Distribution and Significance

Mark Kiessling, 1996, A New Look at the Sedimentology and Stratigraphy of the Eau Claire Formation, Tilden area Chippewa County, Wisconsin

Nick Loomis, 1996, Quantification of Heavy Metals in the Organic Material and Sediments from Wetlands in the Coeur d'Alene River Valley (co-supervised with R. L. Hooper)

Todd Myse, 1995, Downstream modification of sulfide mineralogy in the bedload of the Coeur d'Alene River: a potential factor in the distribution of heavy metal contamination (co-supervised with R.L. Hooper)

Jenna Tobias, 1995, Research of the distribution and extent of the sulfide mineral contamination on the Coeur d'Alene River floodplain(co-supervised with R.L. Hooper)

Nick Loomis, 1995, Quantification of heavy metals in the organic material and sediments from wetlands in the Coeur d'Alene River valley (co-supervised with R.L. Hooper)

Scott Lehmann, 1995, Computerized geologic map of Wisconsin: Developing educational software for the high school classroom (co-supervised with Susan M. Harrison, Computer Science Department)

Heidi Rantela, 1995, Assessment of the role of algae in heavy element redistribution in contaminated stream sediments, Coeur d'Alene River, Idaho (co-supervised with R.L. Hooper)

Gretchen Peters, 1995, Nature of the Upper Cambrian Eau Claire-Wonewoc Formation contact, Menomonie, Wisconsin (co-supervised with K.G. Havholm)

Greg Michael, 1995, Evaluation of clay mineral distribution in PlioPleistocene sediments of the Shikoku Basin, Philippine Sea (co-supervised with R.L. Hooper)

David Hodek, 1995, Trace fossil assemblages within the Upper Cambrian Eau Claire Formation: Distribution and significance (co-supervised with K.G. Havholm)

Mark Kiessling, 1995, A new look at the sedimentology and stratigraphy of the Eau Claire Formation, Tilden area, Chippewa County, Wisconsin (co-supervised with K.G. Havholm)

Lori Snyder
Education
  • M.Sc, Univerisity of British Columbia, Geology
  • B.S., Colorado State University, Geology
Teaching Interests
  •  Physical Geology
  • Environmental Geology
  • Geology of National Parks
  • Field Geology
Research Interests

My primary interests are in the fields of igneous petrology and economic geology, particularly the relationship between magmatism and mineral deposits. I am currently working on projects in central and northern British Columbia investigating Mesozoic and Cenozoic magmatic processes and related mineralization.

Publications

Evenchick, C.A., McNicoll, V.J. and Snyder, L.D. (2004) Stratigraphy, geochronology, and geochemistry of the Georgie River area, northwest British Columbia, and implications for mineral exploration, Canadian Journal of Earth Sciences, Volume 41, pp. 199-216.

Evenchick, C.A., Snyder, L.D. and McNicoll, V.J. (2001) Geology of Hastings Arm West Half and parts of 103P/13, 103O/9 and 103O/16, British Columbia;Geological Survey of Canada, Open File 2996, scale 1:50 000.

van der Heyen, P., Woodsworth, G.J., and Snyder, L.D. (2000) Reconnaissance geological mapping in southwest Nass River map area, British Columbia;in Current Research 2000-A6, 9p. (http://www.nrcan.gc.ca/gsc/bookstore)

Anderson, R.G., Snyder, L.D., Resnick, J., Grainger, N.C. and Barnes, E.M. (1999) Bedrock geology of the Knapp Lake map area, central British Columbia;in Current Research 1999-A, Geological Survey of Canada, pp. 109-118.

Evenchick, C.A. and Snyder L.D. (1999) Geology of the Georgie River area of northwest Nass River map area, northwestern British Colombia;in Current Research 1999-A, Geological Survey of Canada, pp. 13-24.

Sellwood, S.M., Snyder L.D. and Anderson, R.G. (1999) Geology of two high-level Tertiary granite plutons, northern Nechako River map area, central British Columbia;in Current Research 1999-A, Geological Survey of Canada, pp. 149-156.

Anderson, R.G. and Snyder, L.D. (1998) Jurassic to Tertiary volcanic, sedimentary, and intrusive rocks in the Hallett Lake area, central British Columbia;in Current Research 1998-A, Geological Survey of Canada, pp. 135-144.

Haskin, M.L, Snyder, L.D., and Anderson, R.G. (1998) Tertiary Endako Group volcanic and sedimentary rocks at four sites in the Nechako River and Fort Fraser map areas, central British Columbia;in Current Research 1998-A, Geological Survey of Canada, pp. 155-164.

Anderson, R.G., Snyder, L.D., Resnick, J. and Barnes, E. (1998) Geology of the Big Bend Creek map area, central British Columbia;in Current Research 1998-A, Geological Survey of Canada, pp. 145-154.

Evenchick, C.A., McNicoll, V.J., Holm, V.J., Aldrick, D.J., and Snyder, L.D. (1997) Geology, Anyox Pendant and Surrounding Areas in Observatory Inlet (103P/5) and parts of Hastings Arm (103P/12), 103O/8 and 103O/9, British Columbia;Geological of Canada, Open File 3454, scale 1:50,000.

Russell, J.K. and Snyder L.D. (1997) Petrology of Picritic Basalts from Kamloops, British Columbia: Primary Liquids from a Triassic-Jurassic Arc;The Canadian Mineralogist, v. 35, p. 521-541.

Hammack, J.L., Nixon, G.T, Payie, G.J., Snyder, L.D., Haggart, J.W., Massey, N.W.D., and Barron, D.J. (1995) Preliminary Geology of the Quatsino –Cape Scott Area, Northern Vancouver Island, British Columbia Ministry of Energy, Mines and Petroleum Resources, Open File 1995-9, scale 1:50,000.

Russell, J.K., Edwards, B.R., and Snyder, L.D. (1995) Volatile Production Possibilities During Magmatic Assimilation: Heat and Mass-Balance Constraints, in MAC Short Course on Magmas, Fluids and Ore Deposits, Thompson, J.F.H., ed., Mineralogical Association of Canada, Chapter 1, pp. 1-24.

Snyder, L.D. and Russell, J.K. (1995) Petrogenetic Relationships and Assimilation Processes in the Alkalic Iron Mask Batholith, south-central British Columbia;in Porphyry Deposits of the Northwestern Cordillera of North America, Schroeter, T.G., E., Canadian Institute of Mining and Metallurgy, Special Volume 46.

Snyder, L.D. (1994) Petrological Studies within the Iron Mask Batholith, south central British Columbia. Unpublished MSc thesis, The University of British Columbia, Vancouver, British Columbia.

Snyder, L.D. and Russell, J.K. (1994) Petrology and Stratigraphic Setting of the Kamloops Lake Picritic Basalts, Quesnellia Terrane, South-Central B.C. (92I/9, 15 and 16);in Geological Fieldwork, 1993, Grant, B. and Newell, J.M., eds., British Columbia Ministry of Energy, Mines and Petroleum Resources, Paper 1994-1, pp. 297-310.

Stanley, C.R., Lang, J.R. and Snyder, L.D. (1994) Geology and Mineralization in the Northern Part of the Iron Mask Batholith, Kamloops, British Columbia (92I/9, 10);in Geological Fieldwork, 1993, Grant, B. and Newell, J.M., eds., British Columbia Ministry of Energy, Mines and Petroleum Resources, Paper 1994-1, pp. 269-274.

Russell, J.K. and Snyder, L.D. (1993) Volatile Production Attending Magmatic Assimilation Processes;in Ancient Volcanism and Modern Analogues, IAVCEI General Assembly, Canberra, Australia, p. 94. (Abs)

Russell, J.K. and Snyder, L.D. (1993) Volatile Production Possibilities during Magmatic Assimilation;in Volcanoes and Ore Deposits, MDRU Short Course #14, 33p.

Snyder, L.D. and Russell, J.K. (1993) Ultramafic Volcanic Rocks from Quesnellia –Primary Magma Candidates;in Geological Association of Canada/Mineralogical Association of Canada Joint Annual Meeting, Edmonton, Alberta, p. A-97. (Abs)

Snyder, L.D. and Russell, J.K. (1993) Field Constraints on Diverse Igneous Processes in the Iron Mask Batholith (92I9, 10);in Geological Fieldwork 1992, Grant, B. and Newell, J.M., eds., British Columbia Ministry of Energy, Mines and Petroleum Resources, Paper 1993-1, pp. 281-286.

Worl, R.G., Kiilsgaard, T.H., Bennett, E.H., Link, P.K., Lewis, R.S., Mitchell, V.E., Johnson, K.M. and Snyder, L.D. (1991) Geologic Map of the Hailey 1° x 2° Quadrangle, Idaho;United States Geological Survey Open-File Report 91-340.


Steve Sellwood
Education
  • Ph.D., University of Wisconsin - Madison (Geoscience)
  • M.S., University of Kansas (Geology)
  • B.S., University of Wisconsin - Eau Claire (Geology)
Certification
  • Registered Professional Geologist, State of Wisconsin
Research Interests

I am a hydrogeologist with broad interests in aquifer characterization with an emphasis on methods of characterizing aquifer heterogeneity and identifying potential preferential flowpaths. I make use of borehole geophysical tools, borehole flow measurements, and classic aquifer testing techniques to assess aquifer flow conditions. In addition I am interested in groundwater quality and water supply issues in the Paleozoic bedrock formations of western and southern Wisconsin. 

Selected publications

Sellwood, S.M., J.M. Bahr, and D.J. Hart (in press). Evaluation of a discrete-depth heat dissipation test for thermal characterization of the subsurface, in Dowling, C.B., K. Neumann, and L.J. Florea, eds., Geothermal Energy: An Important Resource, GSA Special Paper 519, doi:10.1130/2016.2519(05).

Sellwood, S.M., D.J. Hart, and J.M. Bahr, 2015. Evaluating the use of in-well heat tracer tests to measure borehole flow rates, Groundwater Monitoring & Remediation 35 (4): p. 85-94.

Sellwood, S.M., D.J. Hart, and J.M. Bahr, 2015. An in-well heat-tracer-test method for evaluating borehole flow conditions, Hydrogeology Journal 23 (8): p. 1817-1830.

Sellwood, S.M., J.M. Healey, S. Birk, and J.J. Butler, Jr., 2005. Direct-Push Hydrostratigraphic Profiling: Coupling Electrical Logging and Slug Tests. Ground Water 43 (1): p. 19-29.

McCall, W., J.J. Butler Jr., J.M. Healey, A.A Lanier, S.M. Sellwood, E.J. Garnett, 2002. A Dual-Tube Direct-Push Method for Vertical Profiling of Hydraulic Conductivity in Unconsolidated Formations. Environmental and Engineering Geoscience 8 (2): p. 75-84.

Responsibilities
  • Courses: physical hydrogeology, contaminant hydrogeology, environmental geology

Emeriti professors

  • Paul Myers
  • John Tinker, Jr.
  • Ronald Willis
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