2015 GSA Annual Meeting in Baltimore, Maryland, USA (1-4 November 2015)

Session No. 280
Wednesday, 4 November 2015: 8:00 AM-12:00 PM
Room 325/326 (Baltimore Convention Center)

T152. Geobiology of Critical Transitions: Integrating Fossils, Proxies, and Models II

GSA Geobiology & Geomicrobiology Division; Paleontological Society; Geochemical Society
A. D. Muscente, Natalia Bykova, Jesse S. Broce and James D. Schiffbauer, Session Chairs
Paper #
Start Time
8:00 AM
THE TERRESTRIAL LANDSCAPES OF TETRAPOD EVOLUTION IN EARLIEST CARBONIFEROUS SEASONAL WETLANDS OF THE BALLAGAN FORMATION IN S.E. SCOTLAND, UK
KEARSEY, Timothy1, BENNETT, Carys2, MILLWARD, David1, DAVIES, Sarah J.2, SMITHSON, Tim3, LENG, Melanie4, MARSHALL, John E.A.5, BROWN, Michael A.E.1 and CLACK, Jennifer A.3, (1)British Geological Survey, Murchison House, West Mains Road, Edinburgh, EH9 3LA, United Kingdom, (2)Department of Geology, University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom, (3)Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, United Kingdom, (4)NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, (5)Ocean & Earth Science, University of Southampton, Ocean & Earth Science, NOC, European Way, Southampton (Old Hampshire), SO14 3ZH, United Kingdom, Timk1@bgs.ac.uk
8:15 AM
CALCAREOUS NANNOFOSSILS SURVIVORSHIP AT THE ONSET OF THE MESSINIAN SALINITY CRISIS
LOZAR, Francesca1, DELA PIERRE, Francesco2, NATALICCHIO, Marcello1, VIOLANTI, Donata3, GENNARI, Rocco4 and TURCO, Elena4, (1)Department of Earth Sciences, University of Torino, Via Valperga Caluso, 35, Torino, 10125, Italy, (2)Department of Earth Sciences, University of Torino, Via Valperga Caluso 35, Torino, 10125, Italy, (3)Dept. of Earth Sciences, University of Torino, via Valperga Caluso, 35, Torino, 10125, Italy, (4)Dept. of Physics and Earth Sciences, University of Parma, Viale G P Usberti, 7/A, Parma, 43124, Italy, francesca.lozar@unito.it
8:30 AM
A PHYLOGENETIC ANALYSIS OF THE BRACHIOPOD GENUS LEPTAENA
PLAZA-TORRES, Stephanie Marie, Department of Industrial Biotechnology, University of Puerto Rico at Mayagüez, PO Box 9000, Mayagüez, PR 00681-9000, WAGNER, Peter J., Dept. of Paleobiology, Smithsonian Institution, National Museum of Natural History, Washington, DC 20560 and DARROCH, Simon A.F., Earth and Environmental Sciences, Vanderbilt, 5726 Stevenson Center, 7th floor, Nashville, TN 37240, stephanie.plaza1997@gmail.com
8:45 AM
“BORED” INTRACLASTS REVISITED: MACROBORINGS IN THE LATE CAMBRIAN (FURONGIAN) FLAT-PEBBLE CONGLOMERATES REVEAL THEIR PALEOECOLOGICAL IMPLICATIONS
CHOH, Suk-Joo, Department of Earth and Environmental Sciences, Korea University, Anam-Dong, Seongbuk-Gu, Seoul, 136-713, South Korea, LEE, Jeong-Hyun, Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996 and LEE, Dong-Jin, Department of Earth and Environmental Sciences, Andong National University, Andong, 760-749, South Korea, sjchoh@korea.ac.kr
9:00 AM
SINUSOIDAL COLUMNAR STROMATOLITES FROM THE MESOPROTEROZOIC OF NORTHERN CHINA: ORIGIN AND SIGNIFICANCE
TOSTI, Fabio and RIDING, Robert, Department of Earth and Planetary Sciences, University of Tennessee, 1412 Circle Drive, Knoxville, TN 37996, ftosti@utk.edu
9:15 AM
TUNNELING THROUGH TIME: HORIZONTAL GENE TRANSFER STRATIGRAPHY DATES THE RADIATION OF PROKARYOTE GROUPS, THE ORIGIN OF METHANOGENESIS, AND THE MICROBIOME
WOLFE, Joanna M. and FOURNIER, Gregory P., Earth, Atmospheric & Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, jowolfe@mit.edu
9:30 AM
EXCEPTIONALLY LARGE NEOARCHEAN SPHEROIDAL MICROFOSSILS FROM SOUTH AFRICA: POSSIBLE CONTRIBUTORS TO THE GOE
CZAJA, Andrew D., Department of Geology, University of Cincinnati, 500 Geology-Physics Bldg, Cincinnati, OH 45221-0013, OSTERHOUT, Jeffrey T., Department of Geology, University of Cincinnati, 500 Geology-Physics Building, Cincinnati, OH 45221-0013 and BEUKES, Nicolas J., Department of Geology, University of Johannesburg, P.O. Box 524, Auckland Park, Johannesburg, 2006, South Africa, Andrew.czaja@uc.edu
 
9:45 AM
Break
10:00 AM
RECOGNITION OF SPICE AND OTHER CARBON ISOTOPE EXCURSIONS IN THE UPPER CAMBRIAN OF SOUTHERN MISSOURI: INTERACTION OF LOCAL AND GLOBAL CARBON FACTORIES
SCHIFFBAUER, James D.1, SHELTON, Kevin L.1, HUNTLEY, John Warren1, FIKE, David A.2 and GREGG, Jay M.3, (1)Geological Sciences, University of Missouri, 101 Geological Sciences Building, Columbia, MO 65211, (2)Earth and Planetary Sciences, Washington University in St. Louis, One Brookings Drive, Campus Box 1169, St Louis, MO 63130, (3)Boone Pickens School of Geology, Oklahoma State University, 105 Noble Research Center, Stillwater, OK 74078-3031, schiffbauerj@missouri.edu
10:15 AM
DYNAMIC SHIFTS IN GLACIAL-INTERGLACIAL ATMOSPHERIC CO2 AND TROPICAL VEGETATION DURING EARTH’S LAST ICEHOUSE
MONTANEZ, Isabel P., Department of Earth and Planetary Sciences, University of California, Davis, One Shields Dr., Davis, CA 95616, MCELWAIN, Jennifer C., School of Biology and Environmental Science, University College Dublin, Belfield, Dublin, 4, Ireland, POULSEN, Christopher J., Department of Earth and Environmental Sciences, University of Michigan, 2534 C.C. Little Building, 1100 N. University Ave, Ann Arbor, MI 48109, WHITE, Joseph D., Department of Biology, Baylor University, Waco, TX 76798, WILSON, Jonathan P., Department of Biology, Haverford College, Haverford, PA 19041, DIMICHELE, William, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013, GRIGGS, Galen, Earth and Planetary Sciences, University of California, Davis, One Shields Dr., Davis, CA 95616 and HREN, Michael T., Center for Integrative Geosciences, University of Connecticut, 354 Mansfield Road, Storrs, CT 06269, ipmontanez@ucdavis.edu
10:30 AM
TRACING EARTH’S O2 EVOLUTION USING ZN/FE SYSTEMATICS IN MARINE CARBONATES
LIU, Xiao-Ming, Department of Geological Sciences, University of North Carolina, Chapel Hill, Chapel Hill, NC 27599-3315, KAH, Linda C., Earth and Planetary Sciences, University of Tennessee, 1412 Circle Drive, Knoxville, TN 37996, KNOLL, Andrew H., Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, CUI, Huan, Department of Geology, University of Maryland, College Park, MD 20742, KAUFMAN, Alan J., Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20742, SHAHAR, Anat, Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd. NW, Washington, DC 20015 and HAZEN, Robert M., Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington DC, 20015, xiaomliu@unc.edu
10:45 AM
CARBON ISOTOPIC EVIDENCE OF PHOTOAUTOTROPHY IN AN OPEN MARINE ECOSYSTEM PRECEDING THE GREAT OXYGENATION EVENT
OSTERHOUT, Jeffrey T., Department of Geology, University of Cincinnati, 500 Geology-Physics Building, Cincinnati, OH 45221-0013, CZAJA, Andrew D., Department of Geology, University of Cincinnati, 500 Geology-Physics Bldg, Cincinnati, OH 45221-0013 and BEUKES, Nicolas J., Department of Geology, University of Johannesburg, P.O. Box 524, Auckland Park, Johannesburg, 2006, South Africa, osterhjt@mail.uc.edu
11:00 AM
AN EPISODE OF WIDESPREAD OCEAN ANOXIA DURING THE LATEST EDIACARAN PERIOD REVEALED BY LIGHT U ISOTOPE COMPOSITIONS IN CARBONATES
ZHANG, Feifei, School of Earth and Space Exploration, Arizona State University, Room 686, PSF, 550 E Tyler Mall, Tempe, AZ 85287, KENDALL, Brian, Earth and Environmental Sciences, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada, CUI, Huan, Department of Geology, University of Maryland, College Park, MD 20742, ANBAR, A.D., School of Earth and Space Exploration and Department of Chemistry & Biochemistry, Arizona State University, Tempe, AZ 85287-1404, XIAO, Shuhai, Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061 and KAUFMAN, Alan J., Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20742, fzhang48@asu.edu
11:15 AM
REDOX STABILIZATION IN THE TERMINAL EDIACARAN: THE RECORD OF THE NAMA GROUP, NAMIBIA
BOWYER, Fred1, WOOD, Rachel A.1, PENNY, Amelia1, POULTON, Simon W.2, HOFFMANN, Karl-Heinz3, GUILBAUD, Romain4, TOSTEVIN, Rosalie5, KASEMANN, Simone A.6 and CURTIS, Andrew7, (1)School of GeoSciences, University of Edinburgh, Grant Insitute, The King's Buildings, West Mains Road, Edinburgh, EH9 3JW, United Kingdom, (2)School of Earth and Environment, Univ. of Leeds, Leeds, LS2 9JT, United Kingdom, (3)Windhoek, Namibia, (4)Department of Earth Sciences, University of Cambridge, Cambridge, CB2 3EQ, United Kingdom, (5)Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, United Kingdom, (6)Department of Geosciences & MARUM-Center for Marine Environmental Sciences, University of Bremen, Leobener Str, Bremen, 28359, Germany, (7)School of GeoSciences, University of Edinburgh, Grant Institute, The King's Buildings, West Mains Road, Edinburgh, EH9 3JW, United Kingdom, Fred.Bowyer@ed.ac.uk
11:30 AM
THE TRIPLE OXYGEN ISOTOPE COMPOSITION OF MARINE SULFATE: A METRIC FOR ATMOSPHERIC OXYGEN
JOHNSTON, David T.1, COWIE, Ben1, ANTLER, Gilad2, TURCHYN, Alexandra3 and BERELSON, William M.4, (1)Department of Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138, (2)Dept of Earth Sciences, University of Cambridge, Cambridge, United Kingdom, (3)Department of Earth Sciences, Cambridge University, Downing Street, Cambridge, CB2 3EQ, United Kingdom, (4)Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, johnston@eps.harvard.edu
 
11:50 AM
Concluding Remarks
See more of: Technical Sessions