Session: The Chesapeake Bay Impact Structure: Results from the 2005–2006 ICDP-USGS Deep Drilling Project (Posters) (2007 GSA Denver Annual Meeting (28

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94

GRAVITY AND MAGNETIC MAPS OF THE CHESAPEAKE BAY IMPACT STRUCTURE, VIRGINIA

DANIELS, David L.¹, PLESCIA, Jeffrey B.², SHAH, Anjana K.³, HORTON, J. Wright⁴ and BROZENA, John³, (1)U.S. Geological Survey, 954 National Center, Reston, VA 20192, (2)Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, (3)Naval Research Laboratory, Washington, DC 20375, (4)U.S. Geological Survey, 926A National Center, Reston, VA 20192, dave@usgs.gov, dave@usgs.gov

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95

ROCK MAGNETIC PROPERTIES OF IMPACT AND BASEMENT LITHOLOGIES OF THE CHESAPEAKE BAY IMPACT STRUCTURE

KONTNY, Agnes, Geologisches Institut, Universität Karlsruhe, Hertzstraße 16, Karlsruhe, D-76187, Germany and FRÜHAUF, Patrick, Geologisch-Paläontologisches Institut, Universität Heidelberg, Im Neuenheimer Feld 234, Heidelberg, D-69120, Germany, kontny@agk.uka.de, kontny@agk.uka.de

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96

MAGNETIC SIGNATURE OF EXMORE BRECCIA AND GRANITIC MEGABLOCKS, OF THE 35 MA OLD CHESAPEAKE IMPACT STRUCTURE, VIRGINIA, USA

ELBRA, Tiiu and PESONEN, Lauri, Division of Geophysics, University of Helsinki, PO Box 64, Helsinki, 00014, Finland, tiiu.elbra@helsinki.fi, tiiu.elbra@helsinki.fi

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97

PHYSICAL PROPERTIES OF THE ICDP-USGS EYREVILLE CORE, CHESAPEAKE BAY IMPACT STRUCTURE

PIERCE, Herbert A. and MURRAY, James B., Reston, VA 20192, hpierce@usgs.gov, hpierce@usgs.gov

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98

THERMAL PROPERTIES OF ROCKS FROM THE BOREHOLE EYREVILLE-B, CHESAPEAKE PENINSULA PRELIMINARY DATA

POPOV, Yuri¹, KOROBKOV, Dmitriy¹, ROMUSHKEVICH, Raisa¹, GOROBTSOV, Denis¹, BURKHARDT, Hans², MAYR, Sibylle² and WILHELM, Helmut³, (1)Technical physics and rocks physics, Russian State Geological Prospecting University, Miklukho-Maklai str., 23, Moscow, 117997, Russia, (2)Geophysikalisches Institut, TU Berlin, Berlin, 13355, Germany, (3)Geophysikalisches Institut, Universitaet Karlsruhe, Hertzstrasse 16, Karlsruhe, 76187, Germany, yupopov@dol.ru, yupopov@dol.ru

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99

GEOLOGIC COLUMN OF THE ICDP-USGS EYREVILLE-B CORE, CHESAPEAKE BAY IMPACT STRUCTURE: BRECCIAS, BLOCKS, AND CRYSTALLINE ROCKS, 1,095-1,766 M DEPTH

HORTON, J. Wright¹, GOHN, Gregory S.¹, GIBSON, Roger L.², REIMOLD, Wolf Uwe³ and EDWARDS, Lucy E.¹, (1)U.S. Geological Survey, 926A National Center, Reston, VA 20192, (2)School of Geosciences, University of the Witwatersrand, PO WITS, Johannesburg, 2050, South Africa, (3)Museum of Natural History, Humboldt University, Invalidenstrasse 43, Berlin, D-10115, Germany, whorton@usgs.gov, whorton@usgs.gov

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100

GEOLOGICAL COLUMN OF THE ICDP-USGS EYREVILLE-A AND -B CORES, CHESAPEAKE BAY IMPACT STRUCTURE: SEDIMENT-CLAST BRECCIAS AND SEDIMENT-BLOCKS 1095.7-443.9 M

POWARS, David S., EDWARDS, Lucy E. and GOHN, Greg S., U.S. Geological Survey, 926A National Center, Reston, VA 20192, dpowars@visuallink.com, dpowars@visuallink.com

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FIRST OBSERVATIONS ON EXMORE BRECCIA FROM THE ICDP-USGS EYREVILLE CORE, CHESAPEAKE BAY IMPACT STRUCTURE

REIMOLD, Wolf Uwe¹, BARTOSOVA, Katerina², SCHMITT, Ralf-Thomas³, WITTEK, Andrea⁴ and KOEBERL, Christian², (1)Museum for Natural History, Humboldt University, Berlin, 10115, Germany, (2)Center for Earth Sciences, University of Vienna, Vienna, 1090, Austria, (3)Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity at Humboldt University Berlin, Invalidenstrasse 43, Berlin, 10115, Germany, (4)Museum for Natural History, Humboldt University, Berlin, 10115, uwe.reimold@museum.hu-berlin.de, uwe.reimold@museum.hu-berlin.de

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102

PETROGRAPHIC AND CHEMICAL ANALYSIS OF THE LOWER CRYSTALLINE BASEMENT-DERIVED SECTION, AND THE UPPER GRANITE AND AMPHIBOLITE MEGABLOCKS, EYREVILLE-B CORE, CHESAPEAKE BAY IMPACT STRUCTURE

TOWNSEND, Gabrielle N.¹, GIBSON, Roger L.², HORTON, J. Wright³, REIMOLD, W. Uwe⁴, SCHMITT, Ralf T.⁴, HECHT, Lutz⁵ and CZAJA, Peter⁴, (1)School of Geosciences, University of the Witwatersrand, Private Bag 3, PO Wits, Johannesburg, 2050, South Africa, (2)School of Geosciences, University of the Witwatersrand, PO WITS, Johannesburg, 2050, South Africa, (3)U.S. Geol Survey, 926A National Center, Reston, VA 20192, (4)Museum of Natural History, Humboldt University, Invalidenstrasse 43, Berlin, D-10115, Germany, (5)Museum für Naturkunde Berlin, Leibniz-Institut für Evolutions- und Biodiversitätsforschung an der Humboldt-Universität zu Berlin, Invalidenstrasse 43, Berlin, D-10115, Germany, gtown84@gmail.com, gtown84@gmail.com

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103

INVESTIGATIONS OF MELT PARTICLES IN SUEVITE FROM THE EYREVILLE B CORE, CHESAPEAKE BAY IMPACT STRUCTURE

BARTOSOVA, Katerina¹, FERRIÈRE, Ludovic¹, KOEBERL, Christian¹ and REIMOLD, Uwe², (1)Center for Earth Sciences, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria, (2)Museum of Natural History - Mineralogy, Humboldt-University Berlin, Invalidenstrasse 43, Berlin, 10115, Germany, ludovic.ferriere@univie.ac.at, ludovic.ferriere@univie.ac.at

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104

STABLE CARBON ISOTOPE STUDIES OF IMPACT BRECCIA CLASTS FROM THE EYREVILLE CORE, CHESAPEAKE BAY IMPACT STRUCTURE, VIRGINIA, USA

MADER, Dieter¹, BARTOSOVA, Katerina¹, KOEBERL, Christian¹ and REIMOLD, W.U.², (1)Center for Earth Sciences, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria, (2)Mineralogy, Museum of Natural History, Humboldt University, Invalidenstrasse 43, Berlin, D-10115, Germany, katerina.stetinova@univie.ac.at, katerina.stetinova@univie.ac.at

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105

PETROGRAPHY AND CHEMISTRY OF SUEVITIES IN THE IMPACTITE SEQUENCE, EYREVILLE B CORE, CHESAPEAKE BAY IMPACT STRUCTURE

JOLLY, Lauren C.¹, GIBSON, Roger L.², HORTON, J. Wright³, REIMOLD, W. Uwe⁴, HECHT, Lutz⁵ and CZAJA, Peter⁴, (1)School of Geosciences, University of the Witwatersrand, Private Bag 3, PO Wits, Johannesburg, 2050, South Africa, (2)School of Geosciences, University of the Witwatersrand, PO WITS, Johannesburg, 2050, South Africa, (3)U.S. Geol Survey, 926A National Center, Reston, VA 20192, (4)Museum of Natural History, Humboldt University, Invalidenstrasse 43, Berlin, D-10115, Germany, (5)Museum für Naturkunde Berlin, Leibniz-Institut für Evolutions- und Biodiversitätsforschung an der Humboldt-Universität zu Berlin, Invalidenstrasse 43, Berlin, D-10115, Germany, lcjolly@yahoo.com, lcjolly@yahoo.com

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106

CHEMICAL COMPOSITION OF ROCK TYPES FROM THE EYREVILLE A AND B DRILL CORES, CHESAPEAKE BAY IMPACT STRUCTURE, VIRGINIA/USA

SCHMITT, Ralf T., Museum of Natural History, Humboldt University, Invalidenstrasse 43, Berlin, D-10115, Germany, REIMOLD, Wolf Uwe, Museum für Naturkunde, Leibniz Institute at Humboldt University Berlin, Invalidenstrasse 43, Berlin, D-10115, Germany, BARTOSOVA, Katherina, Center for Earth Sciences, University of Vienna, Althannstrasse 14, Vienna, A-1090 and KOEBERL, Christian, Department of Geological Sciences, University of Vienna, Althannstrasse 14, Vienna, A-1090, Austria, ralf-thomas.schmitt@museum.hu-berlin.de, ralf-thomas.schmitt@museum.hu-berlin.de

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107

SILICATE GLASSES AND SULFIDE MELTS IN THE ICDP-USGS EYREVILLE CORE-B, CHESAPEAKE BAY IMPACT STRUCTURE

BELKIN, Harvey E., U. S. Geological Survey, 956 National Center, Reston, VA 20192 and HORTON, J. Wright, U.S. Geological Survey, 926A National Center, Reston, VA 20192, hbelkin@usgs.gov, hbelkin@usgs.gov

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108

THE TRANSITION FROM RESURGE TO SECULAR SEDIMENTATION AT THE MARINE LOCKNE AND CHESAPEAKE BAY IMPACT STRUCTURES EXPRESSED IN CARBON AND OXYGEN ISOTOPE VALUES

ORMÖ, Jens¹, SELF-TRAIL, Jean M.² and HILL, Andrew¹, (1)Centro de Astrobiología (INTA/CSIC), Instituto Nacional de Técnica Aeroespacial, Ctra de Torrejón a Ajalvir, km 4, 28850 Torrejón de Ardoz, Madrid, (2)U.S. Geological Survey, 926A National Center 12201 Sunrise Valley Dr, Reston, VA 20192, ormo@inta.es, ormo@inta.es

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CHESAPEAKE BAY AND WETUMPKA: STRATIGRAPHY AND PROCESSES IN MARINE IMPACT STRUCTURES

KING Jr, David T.¹, HARRIS, R. Scott², PETRUNY, Lucille³ and GLIDEWELL, Jennifer¹, (1)Dept. Geology, Auburn University, Auburn, AL 36849, (2)Southeastern Planetary Research & Petrography, 3815 Weeping Willow Lane, Loganville, GA 30052, (3)Geology Office, Auburn University, Auburn, AL 36849, kingdat@auburn.edu, kingdat@auburn.edu

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AUTHIGENIC-MINERAL EVIDENCE FOR POST-IMPACT DIAGENESIS AND ALTERATION IN THE CHESAPEAKE BAY IMPACT STRUCTURE: PRELIMINARY RESULTS FROM THE EYREVILLE BOREHOLE CORE

STEPHENS, Elizabeth C., Earth Sciences, University of Memphis, Rm 1, Johnson Hall, Memphis, TN 38152, LARSEN, Daniel, Department of Earth Sciences, University of Memphis, Rm 1, Johnson Hall, Memphis, TN 38152 and ZIVKOVIC, Vladimir, Geology and Geological Engineering, University of North Dakota, Grand Forks, ND 58202, ecstphns@memphis.edu, ecstphns@memphis.edu

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EXPERIMENTAL ALTERATION OF IMPACT GLASSES FROM THE CHESAPEAKE BAY IMPACT — EYREVILLE AND CAPE CHARLES CORES

DECLERCQ, Julien, Department of geosciences, University of Oslo, P.O.Box 1047, Oslo, No-316, Norway, DYPVIK, Henning, Department of geosciences, University of Oslo, Oslo, Norway, AAGAARD, Per, Department of geosciences, University of Oslo, Oslo, No-0316, Norway, JAHREN, Jens, Department of geosciences, University of Oslo, Oslo, No-316, Norway, FERRELL Jr, Ray E., Geology & Geophysics, Louisiana State Univ, E235 Howe/Russell, Baton Rouge, LA 70803 and HORTON, J. Wright, USGS, Reston, VA 20192, julien.declercq@geo.uio.no, julien.declercq@geo.uio.no

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112

THERMAL MATURITY IN THE CHESAPEAKE BAY IMPACT STRUCTURE: DATA FROM THE EYREVILLE DEEP CORES, VIRGINIA, USA

MALINCONICO, MaryAnn L.¹, HORTON, J. Wright², SANFORD, Ward E.³ and KUNK, Michael J.², (1)Department of Geology and Environmental Sciences, Lafayette College, Easton, PA 18042, (2)U.S. Geological Survey, 926A National Center, Reston, VA 20192, (3)U.S. Geological Survey, 431 National Center, Reston, VA 20192, lovem@lafayette.edu, lovem@lafayette.edu

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113

PALEONTOLOGICAL INTERPRETATIONS OF SYNIMPACT SEDIMENTS FROM THE ICDP-USGS EYREVILLE CORES, CHESAPEAKE BAY IMPACT CRATER

SELF-TRAIL, Jean M.¹, EDWARDS, Lucy E.² and LITWIN, Ronald J.¹, (1)U.S. Geological Survey, 926A National Center 12201 Sunrise Valley Dr, Reston, VA 20192, (2)U.S. Geological Survey, 926A National Center, Reston, VA 20192, jstrail@usgs.gov, jstrail@usgs.gov

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114

FOSSIL MICROBIAL SIGNATURES FROM IMPACT INDUCED HYDROTHERMAL SETTINGS; PRELIMINARY SEM RESULTS FROM THE ICDP-USGS CHESAPEAKE BAY IMPACT STRUCTURE DRILLING PROJECT

GLAMOCLIJA, Mihaela, Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd, NW, Washington, DC 20015 and SCHIEBER, Juergen, Department of Geological Sciences, Indiana Univ, 1001 E 10th Str, Bloomington, IN 47405, mglamoclija@ciw.edu, mglamoclija@ciw.edu

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115

CONTAMINATION CONTROLS IN BIOLOGICAL SAMPLING DURING THE 2005 ICDP-USGS DEEP DRILLING OF THE CHESAPEAKE BAY IMPACT CRATER

GRONSTAL, A.L.¹, VOYTEK, Mary A.², COCKELL, C.S.¹, KIRSHTEIN, Julie³, ROSTAD, Colleen E.⁴ and BACH, N.⁵, (1)PSSRI, Open University, Milton Keynes, MK7 6AA, United Kingdom, (2)US Geological Survey, 12201 Sunrise Valley Drive, Reston, VA 20192, (3)U S Geological Survey, National Center, Reston, VA 20192, (4)Branch of Regional Research, USGS, Water Resources Discipline, Box 25046, MS 408, Denver Federal Center, Denver, CO 80225, (5)Old Dominion University, Norfolk, VA VA 23529, a.l.gronstal@open.ac.uk, a.l.gronstal@open.ac.uk

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116

POREWATER CHEMISTRY OF THE ICDP-USGS EYREVILLE COREHOLE, CHESAPEAKE BAY IMPACT STRUCTURE

SANFORD, Ward E.¹, COZZARELLI, Isabelle M.¹, DOUGHTEN, Michael W.², EGANHOUSE, Robert P.¹, JOHNSON-GRISCAVAGE, Christine A.³, KIRSHTEIN, Julie¹, KOCH, Joshua C.³, LITTLE, Justin J.³, VOYTEK, Mary A.¹ and WEBSTER, Daniel M.¹, (1)U S Geological Survey, National Center, Reston, VA 20192, (2)U S Geological Survey, 432 National Center, Reston, VA 20192, (3)U S Geological Survey, Denver Federal Center, Lakewood, CO 80225, wsanford@usgs.gov, wsanford@usgs.gov

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POLAR ORGANIC COMPOUNDS IN PORE WATERS FROM THE CHESAPEAKE BAY IMPACT CRATER

ROSTAD, Colleen E., Branch of Regional Research, USGS, Water Resources Discipline, Box 25046, MS 408, Denver Federal Center, Denver, CO 80225 and SANFORD, Ward E., United States Geological Survey, National Center, 12201 Sunrise Valley Drive, Reston, VA 20192, cerostad@usgs.gov, cerostad@usgs.gov

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118

PALEOENVIRONMENTAL CHANGES DURING THE EOCENE-OLIGOCENE TRANSITION, CHESAPEAKE BAY IMPACT CRATER, WESTERN ATLANTIC

SCHULTE, Peter¹, KONTNY, Agnes², JOACHIMSKI, Michael³ and KRUMM, Stefan³, (1)Geozentrum Nordbayern, Universität Erlangen, Schlossgarten 5, Erlangen, D-91056, Germany, (2)Geologisches Institut, Universität Karlsruhe, Hertzstraße 16, Karlsruhe, Germany, (3)Institut für Geologie - Mineralogie, Universität Erlangen, Schlossgarten 5, Erlangen, 91056, Germany, schulte@geol.uni-erlangen.de, schulte@geol.uni-erlangen.de

2007 GSA Denver Annual Meeting (28–31 October 2007)

T105. The Chesapeake Bay Impact Structure: Results from the 2005–2006 ICDP-USGS Deep Drilling Project (Posters)