USGS Research Geologist: Geology and Paleoclimate Science Center, Reston VA. Presently task leader of geological investigation of Coastal Plain (CP) deposits in Chesapeake Bay Region (as part of the Atlantic Watershed Project). Subsurface and surficial geological mapper. Focuses on delineating the stratigraphic and structural framework and geological history of the Cretaceous and Tertiary of the Mid-Atlantic Coastal Plain New Jersey to Virginia. As principal discoverer of the Chesapeake Bay impact crater received Virginia Museum of Natural History’s Thomas Jefferson Award for outstanding contributions to science in Virginia. Working on mid-Atlantic Paleochannels, the PETM, and CP seismicity.

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Publications

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March 1, 2000

The effects of the Chesapeake Bay impact crater on the geologic framework and the correlation of hydrogeologic units of southeastern Virginia, south of the James River

About 35 million years ago, a large comet or meteor slammed into the shallow shelf on the western margin of the Atlantic Ocean, creating the Chesapeake Bay impact crater. This report, the second in a series, refines the geologic framework of southeastern Virginia, south of the James River in and near the impact crater, and presents evidence for the existence of a pre-impact James River structural

Authors

David S. Powars

July 1, 1999

The effects of the Chesapeake Bay impact crater on the geological framework and correlation of hydrogeologic units of the lower York-James Peninsula, Virginia

This report documents the highly variable structure, stratigraphy, and buried topography of the outer rim of the Chesapeake Bay impact crater created by its impact and burial. Lithologies of cores are correlated with borehole geophysical logs to characterize the physical properties of the stratigraphic units and their geophysical signatures. The correlation between cores, well cuttings, and boreho

Authors

David S. Powars, Bruce T. Scott

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