2007 GSA Denver Annual Meeting (28–31 October 2007)
Session No. 167 Tuesday, 30 October 2007
1:30 PM-5:30 PM, Colorado Convention Center: 405

T105. The Chesapeake Bay Impact Structure: Results from the 2005–2006 ICDP-USGS Deep Drilling Project I (GSA Planetary Geology Division; GSA Structural Geology and Tectonics Division; GSA Geophysics Division; GSA Sedimentary Geology Division; GSA Hydrogeology Division; International Continental Scientific Drilling Program (ICDP))

Chris Koeberl and Wolf Uwe Reimold, Presiding
 Paper #Start Time
 1:30 PM Introductory Remarks
167-11:35 PM THE ICDP-USGS DEEP DRILLING PROJECT AT THE CHESAPEAKE BAY IMPACT STRUCTURE: AN OVERVIEW: KOEBERL, Christian, Center for Earth Sciences, University of Vienna, Vienna, Austria, christian.koeberl@univie.ac.at, REIMOLD, Wolf Uwe, Mineralogy, Museum of Natural History, Humboldt University, Invalidenstrasse 43, Berlin, D-10115, Germany, GOHN, Gregory, U.S. Geological Survey, 926A National Center, Reston, VA 20192, and MILLER, Kenneth, Geological Sciences, Rutgers Universtiy, Piscataway, NJ 08534
167-21:50 PM CHESAPEAKE BAY IMPACT: INTERNAL STRUCTURE AS REVEALED BY THE GRAVITY FIELD: PLESCIA, Jeffrey, Applied Physics Laboratory, Johns Hopkins University, 11100 Johns Hopkins Drive, Laurel, MD 20723-6099, jeffrey.plescia@jhuapl.edu, DANIELS, David, US Geological Survey, 12201 Sunrise Valley Drive, MS 954 National Center, Reston, VA 20192, and SHAH, Anjana, Naval Research Laboratory, Washington, DC 20375
167-32:05 PM HIGH-RESOLUTION SEISMIC REFLECTION IMAGES ACROSS THE 1.76-KM-DEEP EYREVILLE COREHOLE WITHIN THE MOAT OF THE CHESAPEAKE BAY IMPACT STRUCTURE: CATCHINGS, Rufus D.1, POWARS, David S.2, GOLDMAN, Mark R.3, GOHN, Greg S.2, HORTON, J. Wright Jr2, RYMER, Michael J.3, GANDHOK, Gini3, and EDWARDS, Lucy E.2, (1) Earthquake Science Center, U.S. Geological Survey, 345 Middlefield Rd. MS 977, Menlo Park, CA 94025, catching@usgs.gov, (2) U.S. Geological Survey, 926A National Center, Reston, VA 20192, (3) U.S. Geological Survey, 345 Middlefield Rd. MS 977, Menlo Park, CA 94025
167-42:20 PM PHYSICAL ROCK PROPERTIES OF THE BOREHOLE EYREVILLE — MEASUREMENTS AND PRELIMINARY INTERPRETATION: MAYR, Sibylle I.1, BURKHARDT, Hans1, POPOV, Yuri2, and WILHELM, Helmut3, (1) Department of Applied Geosciences, Technical University Berlin, Sekr. ACK 2, Ackerstraße 71-76, Berlin, 13355, Germany, s.mayr@tu-berlin.de, (2) Technical physics and rocks physics, Russian State Geological Prospecting University, Miklukho-Maklai str., 23, Moscow, 117997, Russia, (3) Geophysikalisches Institut, Universitaet Karlsruhe, Hertzstrasse 16, 76187 Karlsruhe, Karlsruhe, 76187, Germany
167-52:35 PM INITIAL STUDIES OF BRECCIAS, BLOCKS, AND CRYSTALLINE ROCKS IN THE ICDP-USGS EYREVILLE-B CORE, CHESAPEAKE BAY IMPACT STRUCTURE, 1,095-1,766 M DEPTH: HORTON, J. Wright Jr1, ALEINIKOFF, John N.2, KUNK, Michael J.1, JACKSON, John C.3, BELKIN, Harvey4, and CHOU, I-Ming3, (1) U.S. Geological Survey, 926A National Center, Reston, VA 20192, whorton@usgs.gov, (2) U.S. Geological Survey, MS 963, DFC, Denver, CO 80225, (3) U.S. Geological Survey, 954 National Center, Reston, VA 20192, (4) U.S. Geol Survey, 956 National Center, Reston, VA 20192
167-62:50 PM PRE-IMPACT TECTONOTHERMAL EVOLUTION OF THE CRYSTALLINE TARGET IN THE ICDP-USGS EYREVILLE-B CORE, CHESAPEAKE BAY IMPACT STRUCTURE: GIBSON, Roger L.1, TOWNSEND, Gabrielle N.1, HORTON, J. Wright Jr2, and REIMOLD, W. Uwe3, (1) School of Geosciences, University of the Witwatersrand, Private Bag 3, PO Wits, Johannesburg, 2050, South Africa, roger.gibson@wits.ac.za, (2) U.S. Geol Survey, 926A National Center, Reston, VA 20192, (3) Museum of Natural History, Humboldt University, Invalidenstrasse 43, Berlin, D-10115, Germany
 3:05 PM Break
167-73:20 PM DIKE BRECCIAS IN THE DEEP BASEMENT-DERIVED SECTION OF THE EYREVILLE B CORE, CHESAPEAKE BAY IMPACT STRUCTURE: REIMOLD, Wolf Uwe1, KENKMANN, Thomas2, GIBSON, Roger L.3, BARTOSOVA, Katerina4, SCHMITT, Ralf-Thomas2, HECHT, Lutz2, KOEBERL, Christian5, and HORTON, J. Wright Jr6, (1) Museum for Natural History, Humboldt University, Invalidenstrass 43, Berlin, 10115, Germany, uwe.reimold@museum.hu-berlin.de, (2) Museum for Natural History, Humboldt University, Invalidenstrasse 43, Berlin, 10115, Germany, (3) School of Geosciences, University of the Witwatersrand, Private Bag 3, PO Wits, Johannesburg, 2050, South Africa, (4) Center for Earth Sciences, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria, (5) Center for Earth Sciences, University of Vienna, Vienna, 1090, Austria, (6) U.S. Geological Survey, 926A National Center, Reston, VA 20192
167-83:35 PM OCCURRENCE OF SHOCK-METAMORPHOSED QUARTZ AND FELDSPAR GRAINS IN THE EXMORE DIAMICTON AND SEDIMENT MEGABLOCKS, ICDP-USGS EYREVILLE CORES, CHESAPEAKE BAY IMPACT CRATER: MORROW, Jared R., Geological Sciences, San Diego State University, 5500 Campanile Dr., 237 GMCS, San Diego, CA 92182, jmorrow@geology.sdsu.edu and HORTON, J. Wright Jr, U.S. Geological Survey, 926A National Center, Reston, VA 20192
167-93:50 PM LITHOLOGICAL, PETROGRAPHICAL, AND GEOCHEMICAL INVESTIGATIONS OF SUEVITE FROM THE EYREVILLE CORE, CHESAPEAKE BAY IMPACT STRUCTURE: BARTOSOVA, Katerina1, FERRIÈRE, Ludovic2, KOEBERL, Christian3, REIMOLD, W.U.4, GIBSON, Roger5, and SCHMITT, Ralf-Thomas4, (1) Center for Earth Sciences, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria, katerina.stetinova@univie.ac.at, (2) Department of Geological Sciences, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria, (3) Department of Geological Sciences, University of Vienna, Vienna, Austria, (4) Mineralogy, Museum of Natural History, Humboldt University, Invalidenstrasse 43, Berlin, D-10115, Germany, (5) School of Geosciences, University of the Witwatersrand, P.O. Wits, Johannesburg, 2050, South Africa
167-104:05 PM GEOCHEMICAL CHARACTERISTICS OF MELTED DOMAINS IN SUEVITES OF THE EYREVILLE DRILL CORE B; CHESAPEAKE BAY IMPACT STRUCTURE, USA: LUETKE, Sabine1, DEUTSCH, Alex2, and LANGENHORST, Falko1, (1) Institut f. Geowissenschaften, Friedrich-Schiller-Universität Jena, Burgweg 11, Jena, D-07749 Jena, Germany, luetke.s@uni-muenster.de, (2) Institut f. Planetologie, Universität Münster, Wilhelm-Klemm-Str. 10, Muenster, D-48149, Germany
167-114:20 PM OBSERVATIONS AND ANALYSIS OF SHOCK METAMORPHISM, SUEVITE MELT BODIES, MICROSPHERULES, AND NI-CR SPINELS IN SELECTED SAMPLES FROM THE ICDP-USGS CHESAPEAKE BAY IMPACT STRUCTURE EYREVILLE CORES: GLIDEWELL, Jennifer1, HARRIS, R. Scott2, KING, David T. Jr1, and PETRUNY, Lucille3, (1) Dept. Geology, Auburn University, Auburn, AL 36849, glideje@auburn.edu, (2) Department of Geosciences, Georgia State University, Atlanta, GA 30302, (3) Geology Office, Auburn University, Auburn, AL 36849
167-124:35 PM GLASS VS. GLASS: BEDIASITES AND MELT LITHOLOGIES IN THE EYREVILLE DRILL CORE B; CHESAPEAKE BAY IMPACT STRUCTURE, USA: POLLOK, Kilian, Institut f. Geowissenschaften, Friedrich-Schiller-Universität, Burgweg 11, Jena, D-07749, Germany, DEUTSCH, Alexander, Institut für Planetologie, Universität Münster, Münster, D-48149, Germany, deutsca@uni-muenster.de, LANGENHORST, Falko, Institut f. Geowissenschaften, Friedrich-Schiller-Univ, Jena, D-07749, Germany, and LUETKE, Sabine, Institut f. Planetologie, Universität Münster, Muenster, D-48149, Germany
167-134:50 PM CHARACTERIZATION OF THE CHESAPEAKE BAY IMPACTOR BY DETERMINATION OF THE PLATINUM GROUP ELEMENT PGE RATIOS IN THE IMPACTITE SAMPLES OF THE 2005-2006 ICDP-USGS DEEP DRILLING PROJECT CORES: GODERIS, Steven1, VANHAECKE, Frank2, and CLAEYS, Philippe1, (1) Department of Geology, Vrije Universiteit Brussel, Pleinlaan 2, Brussel, B-1050, Belgium, Steven.Goderis@vub.ac.be, (2) Dept. of Analytical Chemistry, Universiteit Gent, Krijgslaan 281 - S12, Ghent, B-9000, Belgium
167-145:05 PM HYDROTHERMAL ALTERATION WITHIN DEEP CRATER FILL MATERIAL, CHESAPEAKE BAY IMPACT STRUCTURE: A MINERAL AND FLUID INCLUSION STUDY: VANKO, David A. and BENBOW, Daniel J., Department of Physics, Astronomy, and Geosciences, Towson University, Towson, MD 21252, dvanko@towson.edu

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