Geology & Earth Science

Geology & Earth Science Experts

David Powars

The U.S. Geological Survey
United States Virgin Islands


David Powars,Research Geologist,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.

Research Interest

earth history earth structure crust (earth) geologic history geologic structure


  • Kulpecz, A.A., Miller, K.G, Browning, J.V., Edwards, L.E., Powars., D.S., McLaughlin, P.P., Harris, A.D., and Feigenson, M.D., 2009, Postimpact deposition in the Chesapeake Bay impact structure: Variations in eustasy, compaction, sediment supply, and passive-aggressive tectonism, in Gohn, G.S., Koeberl, C., Miller, K.G., and Reimold, W.U., eds., The ICDP-USGS Deep Drilling Project in the Chesapeake Bay Impact Structure: Results from the Eyreville Core Holes: Geological Society of America Special Paper 458, p. 811-837.

  • Edwards, L.E., Powars, D.S., Horton, J.W., Jr., Gohn, G.S., Self-Trail, J.M., and Litwin, R.J., 2010, Inside the crater, outside the crater: Stratigraphic details of the margin of the Chesapeake Bay impact structure, Virginia, USA, in Reimold, W.U., and Gibson, R.L., eds., Large Meteorite Impacts and Planetary Evolution IV: Geological Society of America Special Paper 465, p. 319-393, doi:

  • Self-Trail, Jean M., Powars, David S., Watkins, David K. , Wandless, Gregory A., 2012, Calcareous nannofossil assemblage changes across the Paleocene–Eocene Thermal Maximum: Evidence from a shelf setting. Marine Micropaleontology vol. 92–93, p. 61–80

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