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

Session No. 250
Tuesday, 3 November 2015: 1:30 PM-5:30 PM
Room 325/326 (Baltimore Convention Center)

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

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
 
1:30 PM
Introductory Remarks
1:35 PM
THE ROLE OF FRAMBOIDAL PYRITE AND SULFUR CYCLING IN EDIACARAN TAPHONOMY
LIU, Alexander G., School of Earth Sciences, University of Bristol, Life Sciences Building, 24, Tyndall Avenue, Bristol, BS8 1TQ, United Kingdom, alex.liu@bristol.ac.uk
1:50 PM
ENVIRONMENTAL CONTEXT FOR ANIMAL BIOMINERALIZATION AND FOSSIL PYRITIZATION IN THE TERMINAL EDIACARAN PERIOD
CUI, Huan1, KAUFMAN, Alan J.2, XIAO, Shuhai3, CAO, Hansheng1, PEEK, Sara1, LIU, Xiao-Ming4, MIN, Xiao5, CAI, Yaoping5, PENG, Yongbo6 and SCHIFFBAUER, James D.7, (1)Department of Geology, University of Maryland, College Park, MD 20742, (2)Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20742, (3)Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, (4)Department of Geological Sciences, University of North Carolina, Chapel Hill, Chapel Hill, NC 27599-3315, (5)Department of Geology, Northwest University, Xi'an, 710069, China, (6)Department of Geology & Geophysics, Louisiana State University, Baton Rouge, LA 70803, (7)Geological Sciences, University of Missouri, 101 Geological Sciences Building, Columbia, MO 65211, hcui@umd.edu
2:05 PM
A MODEL FOR THE PRESERVATION OF SHELLS AS CARBONACEOUS FOSSILS BASED ON TAPHONOMIC OBSERVATIONS AND EXPERIMENTS
MUSCENTE, A.D., Department of Geosciences, Virginia Tech, Blacksburg, VA 24061 and XIAO, Shuhai, Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, adm97@vt.edu
2:20 PM
PHOSPHATIC AND GLAUCONITIC FOSSIL PRESERVATION LINKED TO REDOX OSCILLATIONS IN CAMBRIAN OCEANS
PRUSS, Sara B., Department of Geosciences, Smith College, Northampton, MA 01063, DWYER, Camille H., Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, SMITH, Emily F., Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138, MACDONALD, Francis A., Department of Earth and Planetary Sciences, Harvard University, 2, Cambridge, MA 02138, TOSCA, Nicholas, Department of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, United Kingdom, FAGGETTER, Luke, University of Leeds, Leeds, LS1 6ED, United Kingdom and ZHANG, Ziqiu, Geosciences, Smith College, Northampton, MA 01061, spruss@smith.edu
2:35 PM
EXCEPTIONALLY PRESERVED OCTOBRACHIA COLEOIDS FROM THE FIRST EARLY JURASSIC LAGERSTÄTTE IN NORTH AMERICA
MARROQUÍN, Selva M., Jackson School of Geosciences, University of Texas at Austin, 1 University Station c1100, Austin, TX 78712, MARTINDALE, Rowan C., Jackson School of Geosciences, University of Texas at Austin, 1 University Station C1100, Austin, TX 78712, FUCHS, Dirk, Earth and Planetary System Science, Department of Natural History Sciences, Hokkaido University, Sapporo, 060-0810, Japan, GILL, Benjamin C., Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061 and THEM II, Theodore R., Department of Geosciences, Virginia Polytechnic Institute & State University, Blacksburg, VA 24061, Selva.Marroquin@utexas.edu
2:50 PM
GEOCHEMICAL CONSTRAINTS ON THE DEPOSITION OF MICROFOSSIL-BEARING EARLY DIAGENETIC CHERT IN THE PROTEROZOIC
MANNING-BERG, A.R., Department of Earth and Planetary Sciences, University of Tennessee - Knoxville, 1412 Circle Drive, Knoxville, TN 37996 and KAH, L.C., Department of Earth & Planetary Sciences, University of Tennessee, 1412 Circle Drive, Knoxville, TN 37996, aberg@vols.utk.edu
3:05 PM
MICROSTRUCTURAL CHANGES IN FOSSIL GIANT CLAM SHELLS THROUGH 200 KA: INITIAL RESULTS
GANNON, Michelle E., Department of Geological Sciences, The University of Alabama, 2000 Bevill Building, 7th Avenue, Tuscaloosa, AL 35487, AHARON, Paul, Department of Geological Sciences, University of Alabama, 2003 Bevill Building, 7th Avenue P.O. Box 870338, Tuscaloosa, AL 35487-0338 and PÉREZ-HUERTA, Alberto, Department of Geological Sciences, University of Alabama, Bevill Building, 7th Avenue, Tuscaloosa, AL 35487, megannon@crimson.ua.edu
 
3:20 PM
Break
3:35 PM
CRYOGENIAN REEF COMPLEXES AS PROXIES FOR PALEOCEANOGRAPHIC CONDITIONS AT THE DAWN OF ANIMAL LIFE
HOOD, Ashleigh1, PLANAVSKY, Noah2, WALLACE, Malcolm W.3, GUEGUEN, Bleuenn1 and WANG, Xiangli4, (1)Department of Geology and Geophysics, Yale University, 210 Whitney Ave., New Haven, CT 06511, (2)Geology and Geophysics, Yale University, New Haven, CT 06520, (3)School of Earth Sciences, University of Melbourne, Carlton, 3010, Australia, (4)Geology & Geophysics, Yale University, New Haven, CT 06520, ashleigh.hood@yale.edu
3:50 PM
USING GEOCHEMICAL TOOLS TO STUDY EDIACARAN MACROORGANISMS FROM THE KHATYSPYT FORMATION, OLENEK UPLIFT, SIBERIA
BYKOVA, Natalia1, GILL, Benjamin C.1, GRAZHDANKIN, Dmitriy2 and XIAO, Shuhai1, (1)Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, (2)Trofimuk Institute of Petroleum Geology and Geophysics, Prospekt Koptuga 3, Novosibirsk, 630090, Russia, naticha@vt.edu
4:05 PM
CONTENT, NATURE, AND SIGNIFICANCE OF THE RIFLE RANGE LAGERSTÄTTE (EAGER FORMATION, EARLY CAMBRIAN), CRANBROOK, BRITISH COLUMBIA
WEBSTER, Mark, Dept. of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637, CARON, Jean-Bernard, Department of Natural History (Paleobiology Section), Royal Ontario Museum, 100 Queen's Park, Toronto, ON M5S2C6, Canada; Department of Earth Sciences, University of Toronto, 22 Russell Street, Toronto, ON M5S3B1, Canada; Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON M5S3B2, Canada, GAINES, Robert, Geology Department, Pomona College, 185 E. 6th St, Claremont, CA 91711 and MÁNGANO, Gabriela, Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, SK S7N 5E2, Canada, mwebster@geosci.uchicago.edu
4:20 PM
A NEW BURGESS SHALE-TYPE DEPOSIT FROM THE EDIACARAN OF WESTERN MONGOLIA
DORNBOS, Stephen Q.1, OJI, Tatsuo2, KANAYAMA, Akihiro2 and GONCHIGDORJ, Sersmaa3, (1)Department of Geosciences, University of Wisconsin-Milwaukee, Milwaukee, WI 53201, (2)Nagoya University Museum, Nagoya University, Furo-cho, Nagoya, 464-8601, Japan, (3)Mongolian University of Science and Technology, Ulaanbaatar, Mongolia, sdornbos@uwm.edu
4:35 PM
PALEOENVIRONMENTAL AND DEPOSITIONAL SETTING OF THE EMU BAY SHALE, A UNIQUE EARLY CAMBRIAN LAGERSTÄTTE
GAINES, Robert R., Geology, Pomona College, 185 East Sixth Street, Claremont, CA 91711, PATERSON, John, Environmental Sciences and Natural Resources Management, The University of New England, Armidale, 2351, Australia, JAGO, Jim, School of Natural and Built Environments, University of South Australia, Mawson Lakes, 5095, Australia, GEHLING, James, South Australian Museum, Adelaide, 5000, Australia and GARCIA-BELLIDO, Diego, Genetics and Evolution, University of Adelaide, Adelaide, 5005, Australia, Robert.Gaines@pomona.edu
4:50 PM
SEAWEED THROUGH TIME: THE EARLY PALEOZOIC
LODUCA, Steven T., Department of Geography and Geology, Eastern Michigan University, 205 Strong Hall, Ypsilanti, MI 48197, WU, Mengyin, Department of Economics and Management, Guiyang College, Guizhou Province, Guiyang, 550005, China, ZHAO, Yuanlong, College of Resource and Environment Engineering, Guizhou University, Guiyang, 550003, China, XIAO, Shuhai, Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, SCHIFFBAUER, James D., Geological Sciences, University of Missouri, 101 Geological Sciences Building, Columbia, MO 65211, LEROY, Matthew, Department of Geosciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 and O'NEIL, Ellen, Geography and Geology, Eastern Michigan University, 203 Strong Hall, Ypsilanti, MI 48197, sloduca@emich.edu
5:05 PM
GEOBIOLOGY AND PALEOGENOMICS
BOTTJER, David J., Department of Earth Sciences, Univ of Southern California, Los Angeles, CA 90089-0740, dbottjer@usc.edu
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