GSA Annual Meeting in Denver, Colorado, USA - 2016

Session No. 183
Tuesday, 27 September 2016: 8:00 AM-12:00 PM
Room 404 (Colorado Convention Center)

T37. Excursions, Extinctions, and Environmental Change: New Advances in Geochemical Tools Linked to Critical Intervals of Environmental and Biotic Change in Earth History

GSA Sedimentary Geology Division; GSA Geobiology & Geomicrobiology Division; SEPM (Society for Sedimentary Geology); Geochemical Society; Paleontological Society; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division
Cole T. Edwards, Seth A. Young, Jeremy Owens and Benjamin C. Gill, Advocates
8:00 AM
REDOX CONDITIONS IN ENVIRONMENTS WITH EARLY EUKARYOTES FROM THE 1.4 GA BELT BASIN, USA DETERMINED FROM IRON MINERALOGY
SLOTZNICK, Sarah P., Department of Earth and Planetary Science, University of California, Berkeley, Berkeley, CA 94720, WINSTON, Don, Emeritus, University of Montana, Missoula, MT 59812, WEBB, Samuel M., Stanford Synchrotron Radiation Laboratory, Stanford Linear Accelerator Center, Menlo Park, CA 94025, KIRSCHVINK, Joseph L., Earth-Life Science Institute, Tokyo Institute of Technology, Meguro-ku, Toyko, 152-8550, Japan; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 and FISCHER, Woodward W., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, sslotz@berkeley.edu
8:15 AM
A CARBON AND NITROGEN ISOTOPE PERSPECTIVE ON 13C EXCURSIONS AND EXTINCTIONS AT THE EDIACARAN/CAMBRIAN BOUNDARY
HALLMANN, Christian, Max Planck Institute for Biogeochemistry, Bremen, 28359, Germany, SUMMONS, Roger E., Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, MIT, E25-633, 77 Massachusetts Ave, Cambridge, MA 02139, OHKOUCHI, Naohiko, Institute of Biogeosciences, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-cho, Yokosuka, 2-15, Japan and GROSJEAN, Emmanuelle, Petroleum and Marine Division, Geoscience Australia, GPO Box 378, Canberra, 2601, Australia, challmann@bgc-jena.mpg.de
8:30 AM
EXCEPTIONAL PRESERVATION OF SOFT-BODIED EDIACARA BIOTA PROMOTED BY SILICA-RICH OCEANS
TARHAN, Lidya G.1, HOOD, Ashleigh V.S.1, DROSER, Mary L.2, GEHLING, James G.3 and BRIGGS, Derek E.G.1, (1)Department of Geology and Geophysics, Yale University, 210 Whitney Ave, New Haven, CT 06511, (2)Department of Earth Sciences, University of California, Riverside, 900 University Ave, Riverside, CA 92521, (3)South Australian Museum, Adelaide, 5000, Australia, lidya.tarhan@yale.edu
8:45 AM
TRACKING EARTH’S REDOX EVOLUTION USING MULTI-NON-TRADITIONAL STABLE ISOTOPE SYSTEMS
WANG, Xiangli1, PLANAVSKY, Noah J.1, COLE, Devon B.1, SPERLING, Erik A.2, ASAEL, Dan1 and REINHARD, Christopher T.3, (1)Department of Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, CT 06511, (2)Department of Geological Sciences, Stanford University, 450 Serra Mall, Bldg. 320, Palo Alto, CA 94305, (3)School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0340, xiangli.wang@yale.edu
9:00 AM
A CHROMIUM ISOTOPE PERSPECTIVE ON BURGESS-SHALE-TYPE PRESERVATION
COLE, Devon B.1, PLANAVSKY, Noah J.1, GAINES, Robert R.2 and LI, Chao3, (1)Department of Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, CT 06511, (2)Geology Department, Pomona College, 185 E. 6th St, Claremont, CA 91711, (3)State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China, devon.cole@yale.edu
9:15 AM
CHROMIUM ISOTOPE AND MICROSTRATIGRAPHIC LASER ABLATION ANALYSIS OF THE BURGESS SHALE FORMATION: NEW IMPLICATIONS FOR THE PALEOREDOX CONDITIONS OF THE CAMBRIAN LAGERSTÄTTE
STOCKEY, Richard George1, TURCHYN, Alexandra2, COLE, Devon3 and PLANAVSKY, Noah J.3, (1)Geological Sciences, Stanford University, 450 Serra Mall, Building 320, Room 118, Stanford, CA 94305-2115, (2)Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, United Kingdom, (3)Department of Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, CT 06511, rstockey@stanford.edu
9:30 AM
CHROMIUM INCORPORATION INTO CALCIUM CARBONATE MINERALS AND ASSOCIATED ISOTOPIC FRACTIONATION: IMPLICATIONS FOR THE CR ISOTOPE PALEOPROXY
BRADY, Ashley1, WANG, Xiangli2, PLANAVSKY, Noah J.2, REINHARD, Christopher T.1 and TANG, Yuanzhi1, (1)School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0340, (2)Department of Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, CT 06511, abrady8@gatech.edu
9:45 AM
CALCIUM ISOTOPES, SEAWATER DIAGENESIS, AND END ORDOVICIAN EARTH HISTORY (Invited Presentation)
JONES, David S.1, BROTHERS, R. William1 and HIGGINS, John A.2, (1)Geology Department, Amherst College, 11 Barrett Hill Road, Amherst, MA 01002, (2)Department of Geosciences, Princeton University, Princeton, NJ 08544, djones@amherst.edu
 
10:05 AM
Break
10:20 AM
EARLY SILURIAN (LLANDOVERY) BIOTIC AND OCEANOGRAPHIC EVENTS: INSIGHTS FROM NEW STABLE ISOTOPE GEOCHEMISTRY WITHIN THE BALTIC BASIN
YOUNG, Seth A.1, OWENS, Jeremy1, ERIKSSON, Mats E.2 and BERGSTRÖM, Stig M.3, (1)Department of Earth, Ocean & Atmospheric Science, Florida State University, 1017 Academic Way, Tallahassee, FL 32306, (2)Department of Geology, Lund University, Sölvegatan 12, Lund, SE-223 62, Sweden, (3)School of Earth Sciences, Division of Earth History, The Ohio State University, 125 S. Oval Mall, Columbus, OH 43210, sayoung2@fsu.edu
10:35 AM
EVIDENCE FOR MARINE METHANE PROCESSING AS A CHEMISTRY-CLIMATE FEEDBACK IN THE EARLY PALEOZOIC (Invited Presentation)
ROHRSSEN, Megan, Department of Earth and Atmospheric Sciences, Central Michigan University, Brooks Hall 314, Mount Pleasant, MI 48859, LOVE, Gordon D., Department of Earth Sciences, University of California, Riverside, 900 University Avenue, Riverside, CA 92521 and REINHARD, Christopher T., Georgia Tech, Atlanta, GA 30332, megan.rohrssen@cmich.edu
10:55 AM
CERIUM ANOMALIES IN WELL-PRESERVED CARBONATES REVEAL OCEAN OXYGENATION WITH THE RISE OF LAND PLANTS
HOOD, Ashleigh V.S.1, WALLACE, Malcolm W.2, PLANAVSKY, Noah J.1, SHUSTER, Alice2 and REED, Christopher P.3, (1)Department of Geology and Geophysics, Yale University, 210 Whitney Ave, New Haven, CT 06511, (2)School of Earth Sciences, University of Melbourne, Carlton, 3010, Australia, (3)Teck Resources Chile Ltda., Las Condes, Santiago, 7550000, Chile, ashleigh.hood@yale.edu
11:10 AM
DEADLY WATERS: PALEOENVIRONMENTAL ANALYSIS OF THE LATE DEVONIAN HANGENBERG BIOEVENT IN THE APPALACHIAN BASIN
MARTINEZ, Aaron M.1, BOYER, Diana L.2, DROSER, Mary L.3 and LOVE, Gordon D.1, (1)Earth Sciences, University of California, Riverside, 900 University Ave, Riverside, CA 92521, (2)Department of Chemistry, Physics and Geology, Winthrop University, Rock Hill, SC 29733, (3)Department of Earth Sciences, University of California, Riverside, 900 University Ave, Riverside, CA 92521, amart109@ucr.edu
11:25 AM
THE OXYGEN MINIMUM ZONE AS A KEY CONTROL ON EXCURSIONS, RECOVERY, AND ENVIRONMENTAL CHANGE FOLLOWING THE END-PERMIAN EXTINCTION (Invited Presentation)
PAYNE, Jonathan L.1, BACHAN, Aviv1, LAU, Kimberly V.1, MEYER, Katja M.2, SCHAAL, Ellen K.3 and KELLEY, Brian M.4, (1)Department of Geological Sciences, Stanford University, 450 Serra Mall, Building 320, Stanford, CA 94305, (2)Department of Earth & Environmental Sciences, Willamette University, 900 State Street, Salem, OR 97301, (3)Department of Geology, Lawrence University, 711 E. Boldt Way, Appleton, WI 54911, (4)ExxonMobil Upstream Research Company, 22777 Springwood Village Parkway, Houston, TX 77389, jlpayne@stanford.edu
11:45 AM
LARGE, RAPID EARLY TRIASSIC SULFUR ISOTOPE SHIFTS RECORDED IN MARINE CARBONATES FROM THE WESTERN U.S
JEFFREY, Brad M.1, ATUDOREI, Nicu-Viorel1, ELRICK, Maya1 and GUEX, Jean2, (1)Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, (2)Institute of Geology, University of Lausanne, UNIL-Dorigny, Bâtiment Anthropole 3182, Lausanne, 1015, Switzerland, bjeffrey@unm.edu
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