Deep Sea Drilling Project Site 612 bolide event: New evidence of a late Eocene impact-wave deposit and a possible impact site, U.S. east coast

Research Article| September 01, 1992 Deep Sea Drilling Project Site 612 bolide event: New evidence of a late Eocene impact-wave deposit and a possible impact site, U.S. east coast C. Wylie Poag; C. Wylie Poag 1U.S. Geological Survey, Woods Hole, Massachusetts 02543 Search for other works by this author on: GSW Google Scholar David S. Powars; David S. Powars 2U.S. Geogical Survey, Reston, Virginia 22092 Search for other works by this author on: GSW Google Scholar Larry J. Poppe; Larry J. Poppe 1U.S. Geological Survey, Woods Hole, Massachusetts 02543 Search for other works by this author on: GSW Google Scholar Robert B. Mixon; Robert B. Mixon 2U.S. Geogical Survey, Reston, Virginia 22092 Search for other works by this author on: GSW Google Scholar Lucy E. Edwards; Lucy E. Edwards 2U.S. Geogical Survey, Reston, Virginia 22092 Search for other works by this author on: GSW Google Scholar David W. Folger; David W. Folger 1U.S. Geological Survey, Woods Hole, Massachusetts 02543 Search for other works by this author on: GSW Google Scholar Scott Bruce Scott Bruce 3Virginia State Water Control Board, Richmond, Virginia 23230 Search for other works by this author on: GSW Google Scholar Geology (1992) 20 (9): 771–774. https://doi.org/10.1130/0091-7613(1992)020<0771:DSDPSB>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation C. Wylie Poag, David S. Powars, Larry J. Poppe, Robert B. Mixon, Lucy E. Edwards, David W. Folger, Scott Bruce; Deep Sea Drilling Project Site 612 bolide event: New evidence of a late Eocene impact-wave deposit and a possible impact site, U.S. east coast. Geology 1992;; 20 (9): 771–774. doi: https://doi.org/10.1130/0091-7613(1992)020<0771:DSDPSB>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract A remarkable >60-m-thick, upward-fining, polymictic, marine boulder bed is distributed over >15000 km2 beneath Chesapeake Bay and the surrounding Middle Atlantic Coastal Plain and inner continental shelf. The wide varieties of clast lithologies and microfossil assemblages were derived from at least seven known Cretaceous, Paleocene, and Eocene stratigraphic units. The supporting pebbly matrix contains variably mixed assemblages of microfossils from the same seven stratigraphic units, along with trace quantities of impact ejecta (tektite glass and shocked quartz). The youngest microfossils in the boulder bed are of early-late Eocene age. On the basis of its unusual characteristics and its stratigraphic equivalence to a layer of impact ejecta at Deep Sea Drilling Project (DSDP) Site 612 (New Jersey continental slope), we postulate that this boulder bed was formed by a powerful bolide-generated wave train that scoured the ancient inner shelf and coastal plain of southeastern Virginia. The most promising candidate for the bolide impact site (identified on seismic reflection profiles) is 40 km north-northwest of DSDP Site 612 on the New Jersey outer continental shelf. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.