GSA 2020 Connects Online

Session No. 76
Tuesday, 27 October 2020: 1:30 PM-5:30 PM

T56. Co-Evolution of Earth’s Surface Environment and Eukaryotic Life from the Mid-Proterozoic to Early Paleozoic

GSA Geobiology and Geomicrobiology Division; GSA Sedimentary Geology Division; SEPM (Society for Sedimentary Geology); GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division; Geochemical Society; Paleontological Society

 

Xinze Lyu and Alex Kunert, Advocates
Paper #
Start Time
 
1:30 PM
Introductory Remarks
1:40 PM
EARTH'S ADOLESCENT LIFE: INSIGHTS INTO THE PALAEOBIOLOGY OF EARLY EUKARYOTES FROM THE MESOPROTEROZOIC FOSSIL RECORD
AGIĆ, Heda, Department of Earth Science, University of California Santa Barbara, 1006 Webb Hall, Santa Barbara, CA 93106
1:55 PM
SINGLE FOSSIL ORGANIC CARBON ISOTOPES ILLUMINATE A MESOPROTEROZOIC ECOSYSTEM
COHEN, Phoebe1, BYRNE, Quinlan1, JUNIUM, Christopher K.2, AGIĆ, Heda3 and PORTER, Susannah M.4, (1)Department of Geosciences, Williams College, 203 Clark Hall, Williamstown, MA 01267, (2)Department of Earth Sciences, Syracuse University, 204 Heroy Geology Laboratory, Syracuse, NY 13244, (3)Department of Earth Science, University of California Santa Barbara, 1006 Webb Hall, Santa Barbara, CA 93106, (4)Department of Earth Science, University of California Santa Barbara, Santa Barbara, CA 93106
2:10 PM
THE POSSIBLE MESOPROTEROZOIC OXYGEN OASIS OF THE ARCTIC SIBERIA
BYKOVA, Natalia, Trofimuk Insitute of Petroleum Geology and Geophysics SB RAS, 3 Prospekt Koptyuga, Novosibirsk, 630090, Russian Federation, NAGOVITSIN, Konstantin, Trofimuk Insitute of Petroleum Geology and Geophysics SB RAS, 3 Prospekt Koptyuga, Novosibirsk, 630090, Russian Federation; Department of Geology and Geophysics, Novosibirsk State University, 1 Pirogova st, Novosibirsk, 63090, Russian Federation and GILL, Benjamin C., Department of Geosciences, Virginia Polytechnic Institute & State University, Blacksburg, VA 24061
2:25 PM
RECONSTRUCTING REDOX CONDITIONS USING A MULTIPROXY METAL ISOTOPE APPROACH: A CASE STUDY FROM THE NEOPROTEROZOIC (Invited Presentation)
OWENS, Jeremy1, CHEN, Xinming2, LI, Siqi1 and WU, Fei1, (1)Department of Earth, Ocean, and Atmospheric Sciences, Florida State University, National High Magnetic Field Laboratory, Tallahassee, FL 32306, (2)Department of Earth, Oceans and Atmospheric Sciences, National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310
 
2:40 PM
Discussion 1
 
2:50 PM
Break
3:10 PM
NEOPROTEROZOIC-PALEOZOIC REDOX-SENSITIVE TRACE METAL RECORDS: OXYGENATION, NOT AS WE KNOW IT
STOCKEY, Richard G.1, SPERLING, Erik A.1, FARRELL, Una C.2, PLANAVSKY, Noah J.3 and SGP TRACE METAL WORKING GROUP, The1, (1)Department of Geological Sciences, Stanford University, 450 Jane Stanford Way, Building 320, Room 118, Stanford, CA 94305-2115, (2)Geology, Trinity College Dublin, College Green, Dublin, 2, Ireland, (3)Department of Earth and Planetary Sciences, Yale University, New Haven, CT 06518
3:25 PM
REDOX LANDSCAPE OF EDIACARAN AND CAMBRIAN EVOLUTIONARY EVENTS
CHERRY, Lucas B., Atmospheric, Oceanic, and Earth Sciences, George Mason University, 4400 University Dr, Fairfax, VA 22030, GILLEAUDEAU, Geoffrey J., Atmospheric, Oceanic, and Earth Sciences, George Mason University, 4400 University Drive, Fairfax, VA 22030, GRAZHDANKIN, Dmitriy, Russian Academy of Science, Novosibirsk Branch, Trofimuk Institute of Petroleum Geology and Geophysics, Novosibirsk, 630090, Russia, ROMANIELLO, Stephen J., NASA Astrobiology Institute, Alternative Earths Team, Mountain View, CA 94043 and KAUFMAN, Alan J., Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20742
3:40 PM
SEARCHING FOR THE LATE DEVONIAN KELLWASSER EVENT IN THE GREAT BASIN REGION, USA: WAS ANOXIA THE MAIN DRIVER OF THE LATE DEVONIAN MASS EXTINCTION? (Invited Presentation)
EDWARDS, Cole, Department of Geological and Environmental Sciences, Appalachian State University, 572 Rivers St., Boone, NC 28608 and HIBNER, Brianna M., Department of Geological and Environmental Sciences, Appalachian State University, Boone, NC 28608
 
3:55 PM
Discussion 2
 
4:05 PM
Break
4:10 PM
AN EXCEPTIONAL RECORD OF EARLY TO MID-PALEOZOIC REDOX CHANGE FROM THE ROAD RIVER GROUP, YUKON, CANADA
SPERLING, Erik A.1, MELCHIN, Michael J.2, FRASER, Tiffani3, STOCKEY, Richard G.1, FARRELL, Úna C.1, BHAJAN, Liam4, BROWNE, Tessa N.1, COLE, Devon B.5, GILL, Benjamin C.6, LENZ, Alfred7, LOYDELL, David K.8, MALINOWSKI, Joseph9, MILLER, Austin1, PLAZA-TORRES, Stephanie10, RODEWALD, Beatrice M.11, ROONEY, Alan D.12, TECKLENBURG, Sabrina1, VOGEL, Jacqueline13, PLANAVSKY, Noah J.12 and STRAUSS, Justin V.9, (1)Department of Geological Sciences, Stanford University, 450 Jane Stanford Way, Building 320, Room 118, Stanford, CA 94305-2115, (2)Dept. of Earth Sciences, St. Francis Xavier Univ, Antigonish, NS B2G 2V5, Canada, (3)Yukon Geological Survey, H.S. Bostock Core Library, 918 Alaska Highway, Whitehorse, YT Y1A3E7, Canada, (4)Department of Earth and Environmental Sciences, Boston College, 140 Commonwealth Avenue, Devlin Hall, Chesnut Hill, MA 02467, (5)School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30322, (6)Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, (7)Department of Earth Sciences, University of Western Ontario, 1151 Richmond Street N., London, ON N615B7, Canada, (8)School of Earth and Environmental Sciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL, United Kingdom, (9)Department of Earth Sciences, Dartmouth College, HB6105 Fairchild Hall, Hanover, NH 03755, (10)Department of Geological Sciences, University of Colorado Boulder, 2200 Colorado Ave, Boulder, CO 80309-0399, (11)Earth and Environmental Sciences, Vanderbilt University, Nashville, TN 37235, (12)Department of Earth and Planetary Sciences, Yale University, New Haven, CT 06511, (13)School of Earth, Energy & Environmental Sciences, Stanford University, 473 Via Ortega, Stanford, CA 94305
4:25 PM
SI ISOTOPIC ANALYSES OF ORDOVICIAN-SILURIAN SPONGE SPICULES AND RADIOLARIANS INDICATE SILICA-DEPLETED PALEOZOIC OCEANS
TROWER, Elizabeth J., Department of Geological Sciences, University of Colorado Boulder, Boulder, CO 80309, STRAUSS, Justin V., Department of Earth Science, Dartmouth College, HB 6105 Fairchild Hall, Hanover, NH 03755, SPERLING, Erik A., Department of Geological Sciences, Stanford University, Stanford, CA 94305 and FISCHER, Woodward W., Geological and Planetary Sciences, California Institute of Technology, 1200 E. California Blvd, Pasadena, CA 91125
4:40 PM
WAS ANOXIA THE MAIN DRIVER OF THE LATE DEVONIAN MASS EXTINCTION? NEW INSIGHTS USING PAIRED STABLE CARBON AND SULFUR ISOTOPES
HIBNER, Brianna M. and EDWARDS, Cole T., Department of Geological and Environmental Sciences, Appalachian State University, Boone, NC 28608
4:55 PM
WATERMASS RECONSTRUCTION IN THE EARLY MISSISSIPPIAN APPALACHIAN SEAWAY BASED ON REDOX AND SALINITY PROXY VARIATION (Invited Presentation)
GILLEAUDEAU, Geoffrey J., Atmospheric, Oceanic, and Earth Sciences, George Mason University, 4400 University Drive, Fairfax, VA 22030, ALGEO, Thomas J., Department of Geology, University of Cincinnati, Cincinnati, OH 45221, LYONS, Timothy W., Earth Sciences, University of California, Riverside, Riverside, CA 92521-0423, BATES, Steve, Dept. of Earth Sciences, University of California, Riverside, CA 92521 and ANBAR, Ariel D., School of Molecular Sciences, Arizona State University, Tempe, AZ 85287-1404
 
5:10 PM
Discussion 3
 
5:20 PM
Concluding Remarks
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