Conclusions

A study of four, active, eolian dunes in coastal North Carolina and Virginia using GPR, GPS, and radiocarbon dating of buried soils gave the following results:

	Snow Hill and Penny Hill have each experienced only one phase of dune activity (no buried paleosols) and have migrated as simple dunes to the south-southwest, although Snow Hill is changing shape as it becomes a parabolic dune.
	Run Hill experienced a phase of dune activity, followed by stabilization, then reactivation to form the current phase of dune activity. The overall dune migration direction has been south-southwest; however, the older precipitation ridge migrated westward and modern superimposed dunes migrate to the east.
	Jockeys Ridge experienced three phases of dune activity, which were interrupted by two phases of dune stabilization. Jockeys Ridge has migrated primarily to the south-southwest and west.
	The older phases of dune activity on the two southern dunes must be attributed to local conditions because this phase is not present on the two northern dunes.
	The oldest phase of dune activity (at Jockeys Ridge) likely occurred prior to 1410 AD.
	Preliminary radiocarbon dates on stumps rooted in buried paleosols at Run Hill and Jockeys Ridge support the theory that the most recent dune reactivation began at nearly the same time. This last phase of dune activity began since European occupation of the study area.
	Further refinement of timing of active dune phases will be possible when IR-OSL dates are completed.