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PIT#1

Group #1

  A1—0 to 5cm; Very dark gray (10YR 3/1), field moisture; loamy sand; weak medium sub-angular; .7/.5 to .7/.7 sphericity, poorly sorted, mostly quartz with feldspar and other crystalline lithologies; weak fine to medium crumb; very friable, slightly sticky, non-plastic; many very fine vertical roots (<1mm); no clasts; no HCl reaction; clear smooth boundary.

 

   A2—5 to 25 cm; Very dark grayish brown (10YR 3/2), field moisture; loamy sand; weak medium sub-angular; .7/.5 to .7/.7 sphericity, poorly sorted, mostly quartz with feldspar and other crystalline lithologies; weak fine to very medium crumb; very friable, slightly sticky, non-plastic; common very fine vertical roots (<1mm); no clasts; no HCl reaction; clear smooth boundary.

 

    AB—25 to 33cm; Dark brown (10YR 3/3), field moisture; loamy sand; weak medium sub-angular; .7/.5 to .7/.7 sphericity, poorly sorted, mostly quartz with feldspar and other crystalline lithologies; weak fine to medium crumb; very friable, slightly sticky, non-plastic; many very fine vertical roots (<1mm), very few and fine vertical roots (1-2mm); no clasts; no HCl reaction; gradual smooth boundary.

 

  C/Bw—33 to 60cm

  C:  Dark yellow brown (10YR 4/4), field moisture; loamy sand; weak coarse sub-angular; .7/.5 to .7/.7 sphericity, poorly sorted, mostly quartz with feldspar and other crystalline lithologies; weak fine to medium crumb; very friable, slightly sticky, non-plastic; very few fine (1-2mm) to very few, very fine vertical roots (<1mm); no clasts; no HCl reaction; clear smooth boundary.

 

   Bw:  Dark brown (10YR 3/3), field moisture; loamy sand; weak medium sub-angular; .7/.5 to .7/.7 sphericity, poorly sorted, mostly quartz with feldspar and other crystalline lithologies; weak fine to medium crumb; very friable, slightly sticky, non-plastic; very few medium (2-5mm) and very few very fine (<1mm) vertical roots; no clasts; no HCl reaction; clear smooth boundary.

 

  

 

 
Pit profile #1

   C1—60 to 68 cm; Dark yellow brown (10YR 4/4), field moisture; loamy sand; coarse sub-angular; .7/.5 to .7/.7 sphericity, poorly sorted, mostly quartz with feldspar and other crystalline lithologies; weak fine to medium crumb; very friable, slightly sticky, non-plastic; very few very fine vertical roots (<1mm); no clasts; no HCl reaction; clear smooth boundary.

 

C2—68 to 77cm; Dark yellow brown (10YR 4/4), field moisture; sand; coarse sub-angular; .7/.7 to .7/.9 sphericity, moderately to poorly sorted, mostly quartz with feldspar and other crystalline lithologies; loose;  very friable, slightly sticky, non-plastic; very few fine vertical roots (1-2mm); clasts: .3 to 2.5 cm, 40%, sub-rounded, no orientation; no HCl reaction; clear smooth boundary.

 

   C3—77 to 87 cm; Yellowish brown (10YR 5/6), field moisture; loamy sand; weak coarse sub-angular; .7/.5 to .7/.7 sphericity, poorly sorted, mostly quartz with feldspar and other crystalline lithologies; weak fine to medium crumb; very friable, slightly sticky, non-plastic; no roots; no rocks; no HCl reaction; clear smooth boundary.

 

   C4—87 to 103 cm; Yellowish brown (10YR 5/6), field moisture; sand; very coarse sub-angular, .7/.7 to .7/.9 sphericity, moderately to poorly sorted, mostly quartz with feldspar and other crystalline lithologies;  loose; very friable, slightly sticky, non-plastic; very few very fine vertical roots (<1mm); clasts: .3 to 4.5 cm, 65%, sub-rounded, no orientation; no HCl reaction; clear smooth boundary.

 

   C5—103 to 152 cm; Dark yellowish brown (10YR 4/6), field moisture; sand; very coarse sub-angular; .7/.7 to .7/.9 spericity, moderately to poorly sorted, mostly quartz with feldspar and other crystalline lithologies; loose; very friable, slightly sticky, non-plastic; no roots; clasts: .3 to 6.0 cm, 50%, sub-rounded, no orientation; no HCl reaction; clear smooth boundary.

 

 

Conclusion

Soil Pit #1 is located in a grassy forbes area within a clearing of trees.  This site is approximately 20 m from the main road, but situated on an old road path.  Soils in this location are mapped as the Finchford Series in the new soil map data (Meyer, personal communication 2001), and as Hubbard Loamy Sand 2 – 6% slopes (HuB), in the Dunn County Soil Survey (ref).  Our observations are generally consistent with the Finchford Series with a few exceptions.  The Finchford Series has a plow zone within its first horizon.  Our pit did not have this because it is located on an old path between trees where agriculture did not take place.  That series also has fewer horizons than we found in our pit, but it has more horizons that consist of sand. Also, in our horizons, we have a higher percentage of rocks.  Because of these discrepancies, we feel that the Soil Profile of Pit #1 is most consistent with the Hubbard Loamy Sand (HuB) Series as described in the Dunn County Soil Survey (ref).  Similarities between soil characteristics we observed in the Pit #1 soil profile and the Hubbard Series description include:  texture (loamy sand and sand), boundaries (clear and smooth), drainage class (well-drained to somewhat excessively-drained soils), location (stream terraces and outwash plains), and structure (weak, coarse sub-angular).