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2002 Denver Annual Meeting (October 27-30, 2002)

Session No. 204
Wednesday, 30 October 2002: 8:00 AM-12:00 PM

T86. Chesapeake Bay Impact Structure: Geology, Geophysics, and Geohydrology of America's Largest Crater

GSA Planetary Geology Division

 

C. Wylie Poag and Gregory S. Gohn, Advocates
Paper #
Start Time
1
8:00 AM
STRUCTURE AND MORPHOLOGY OF THE CHESAPEAKE BAY SUBMARINE IMPACT CRATER
POAG, C. Wylie, US Geol Survey, 384 Woods Hole Rd, Woods Hole, MA 02543-1598, wpoag@usgs.gov, wpoag@usgs.gov
2
8:20 AM
A COMPUTATIONAL MODEL OF THE CHESAPEAKE BAY IMPACT
CRAWFORD, David A., Reactive and Thermal Processes Dept. 9116, Sandia National Laboratories, P. O. Box 5800, MS 0836, Albuquerque, NM 87185, dacrawf@sandia.gov, dacrawf@sandia.gov
3
8:40 AM
LITHOSTRATIGRAPHIC FRAMEWORK OF THE CRATER-FILL DEPOSITS: WESTERN ANNULAR TROUGH, CHESAPEAKE BAY IMPACT CRATER
POWARS, David S.1, GOHN, Gregory S.1, EDWARDS, Lucy E.1, CATCHINGS, Rufus D.2, BRUCE, T. Scott3, JOHNSON, Gerald H.4 and POAG, C. Wylie5, (1)U.S. Geol Survey, 926A National Center, Reston, VA 20192, (2)US Geol Survey, 345 Middlefield Rd, MS-977, Menlo Park, CA 94025-3591, (3)Virginia Dept. of Environmental Quality, Richmond, VA 23240, (4)Geology Department, College of William and Mary, Williamsburg, VA 23187, (5)US Geol Survey, 384 Woods Hole Rd, Woods Hole, MA 02543-1598, dspowars@usgs.gov, dspowars@usgs.gov
4
9:00 AM
VARIATION OF IMPACT RESPONSE WITH DEPTH AND LITHOLOGY, OUTER ANNULAR TROUGH OF THE CHESAPEAKE BAY IMPACT STRUCTURE, VIRGINIA COASTAL PLAIN
GOHN, Gregory S.1, POWARS, David S.1, QUICK, James E.1, HORTON Jr, J. Wright1 and CATCHINGS, Rufus D.2, (1)U.S. Geol Survey, 926A National Center, Reston, VA 20192, (2)U.S. Geol Survey, 345 Middlefield Road, Menlo Park, CA 94025, ggohn@usgs.gov, ggohn@usgs.gov
5
9:20 AM
PALEONTOLOGY OF CRATER-FILL DEPOSITS, CHESAPEAKE BAY IMPACT STRUCTURE, VIRGINIA
EDWARDS, Lucy E., U.S. Geol Survey, National Center MS 926A, Reston, VA 20192, FREDERIKSEN, Norman O., US Geol Survey, 926-A National Ctr, Reston, VA 20192-0001, SELF-TRAIL, Jean M., U.S. Geol Survey, 926A National Center, Reston, VA 20192 and POAG, C. Wylie, US Geol Survey, 384 Woods Hole Rd, Woods Hole, MA 02543-1598, leedward@usgs.gov, leedward@usgs.gov
6
9:40 AM
CHESAPEAKE BAY IMPACT CRATER: PETROGRAPHIC AND GEOCHEMICAL INVESTIGATIONS OF THE IMPACT BRECCIA FILL
REIMOLD, Wolf Uwe, School of Geosciences, Univ of the Witwatersrand, Private Bag 3, PO Wits, Johannesburg, 2050, South Africa, KOEBERL, Christian, Institute of Geochemistry, Univ of Vienna, Althanstrasse 14, Vienna, A-1090, Austria and POAG, C. Wylie, US Geol Survey, 384 Woods Hole Rd, Woods Hole, MA 02543-1598, 065wur@cosmos.wits.ac.za, 065wur@cosmos.wits.ac.za
7
10:00 AM
PETROGRAPHY, GEOCHRONOLOGY, AND SIGNIFICANCE OF CRYSTALLINE BASEMENT ROCKS AND IMPACT-DERIVED CLASTS IN THE CHESAPEAKE BAY IMPACT STRUCTURE, SOUTHEASTERN VIRGINIA
HORTON Jr, J. Wright1, KUNK, Michael J.2, NAESER, Charles W.1, NAESER, Nancy D.1, ALEINIKOFF, John N.2 and IZETT, Glen A.3, (1)U.S. Geol Survey, 926A National Center, Reston, VA 20192, (2)U.S. Geol Survey, MS 963, Denver Federal Center, Denver, CO 80225, (3)Dept. of Geology, College of William and Mary and Emeritus USGS, 3012 East Whittaker Close, Williamsburg, VA 23285, whorton@usgs.gov, whorton@usgs.gov
8
10:20 AM
DISTAL IMPACT EJECTA FROM THE CHESAPEAKE BAY IMPACT STRUCTURE
GLASS, B.P., Geology Dept, Univ. of Delaware, Newark, DE 19716, bglass@udel.edu, bglass@udel.edu
9
10:40 AM
HYDROCHEMICAL EVIDENCE FOR THE ORIGIN OF ELEVATED GROUND-WATER SALINITY IN THE CHESAPEAKE BAY IMPACT STRUCTURE, SOUTHEASTERN VIRGINIA
MCFARLAND, E. Randolph, Water Resources Division, U.S. Geol Survey, 1730 East Parham Road, Richmond, VA 23228, ermcfarl@usgs.gov, ermcfarl@usgs.gov
10
11:00 AM
POSSIBLE HYDROTHERMAL ACTIVITY FOLLOWING THE CHESAPEAKE BAY BOLIDE IMPACT
SANFORD, Ward E., U. S. Geol Survey, Mail Stop 431, Reston, VA 20192, wsanford@usgs.gov, wsanford@usgs.gov
11
11:15 AM
SPATIAL AND TEMPORAL RELATIONSHIPS BETWEEN DIKES, THERMAL SPRINGS, AND DRAINAGE DIVIDES IN THE APPALACHIAN VALLEY & RIDGE AND THE CHESAPEAKE BAY IMPACT STRUCTURE
DIECCHIO, Richard J., Environmental Science & Policy, George Mason University, Fairfax, VA 22030-4444, rdiecchi@gmu.edu, rdiecchi@gmu.edu
12
11:30 AM
BIOSPHERIC CONSEQUENCES OF THE CHESAPEAKE BAY BOLIDE IMPACT
POAG, C. Wylie, US Geol Survey, 384 Woods Hole Rd, Woods Hole, MA 02543-1598, wpoag@usgs.gov, wpoag@usgs.gov
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