GSA 2020 Connects Online

Session No. 182
Thursday, 29 October 2020: 10:00 AM-12:00 PM

T102. Novel Approaches for Constraining the Evolution of Essential Nutrient Cycling

GSA Geobiology and Geomicrobiology Division

 

Moji Fahkraee, Benjamin Johnson, Leslie J. Robbins, Maya Gomes and Eva E. Stüeken, Advocates
Paper #
Start Time
10:00 AM
NEW CONSTRAINTS ON ATMOSPHERIC OXYGENATION (Invited Presentation)
WARKE, Matthew R.1, DI ROCCO, Tommaso2, ZERKLE, Aubrey L.1, LEPLAND, Aivo3, PRAVE, Anthony R.4, MARTIN, Adam P.5, UENO, Yuichro6, CONDON, Daniel7 and CLAIRE, Mark W.8, (1)School of Earth and Environmental Sciences, University of St Andrews, North Street, St Andrews, KY16 9AL, United Kingdom, (2)Geowissenschaftliches Zentrum, Universität Göttingen, Göttingen, 37077, Germany; School of Earth and Environmental Sciences, University of St Andrews, North Street, St Andrews, KY16 9AL, United Kingdom, (3)Geological Survey of Norway, Leiv Eirikssons vei 39, Trondheim, 7491, Norway, (4)Earth and Environmental Sciences, University of St Andrews, Sy Andrews, KY16 9AL, United Kingdom, (5)NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottingham, NG125GG, United Kingdom; GNS Science, Dunedin, 9054, New Zealand, (6)Tokyo Institute of Technology, Tokyo, 152-8551, Japan, (7)NERC Isotope Geosciences Laboratory, British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom, (8)School of Earth and Environmental Sciences, University of St Andrews, North Street, St Andrews, KY16 9AL, United Kingdom; Blue Marble Space Institute of Science, Seattle, WA 98154
10:15 AM
BIOMARKERS AS A TOOL TO CONSTRAIN ANCIENT BIOGEOCHEMICAL CYCLES
CONNOCK, Gregory T.1, OWENS, Jeremy D.2 and LIU, Xiaolei1, (1)School of Geosciences, University of Oklahoma, 100 E Boyd St, Norman, OK 73069, (2)Earth Ocean and Atmospheric Science, Florida State University, 3533 Cypress Hawk Lane, Tallahassee, FL 32310
10:30 AM
CARBON ISOTOPE EVIDENCE FOR THE GLOBAL PHYSIOLOGY OF PROTEROZOIC CYANOBACTERIA (Invited Presentation)
HURLEY, Sarah1, BUBPHAMANEE, Kunmanee1, JASPER, Claire1, HILL, Nicholas2, CAMERON, Jeffrey2 and WING, Boswell1, (1)Geological Sciences, University of Colorado Boulder, UCB 399, Boulder, CO 80309, (2)Department of Biochemistry, CU Boulder, Boulder, CO 80309
10:45 AM
RECONSTRUCTION OF NITROGENASE PREDECESSORS SUGGESTS ORIGIN FROM MATURASE-LIKE ENZYMES
GARCIA, Amanda K., Department of Molecular and Cellular Biology, University of Arizona, 1007 E Lowell St, Tucson, AZ 85721, KOLACZKOWSKI, Bryan, Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611 and KACAR, Betul, Department of Molecular and Cellular Biology, University of Arizona, 1007 E Lowell St, Tucson, AZ 85721; Department of Astronomy and Steward Observatory, University of Arizona, Tucson, AZ 85721; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721
 
11:00 AM
Discussion
11:10 AM
PHYSICAL CONTROLS AND ENSO EVENT INFLUENCE ON CHEMICAL WEATHERING ACROSS THE PANAMA CANAL WATERSHED
SMITH, Devin, School of Earth Sciences, The Ohio State University, 275 Mendenhall Laboratory, 125 South Oval Mall, Columbus, OH 43210, GOLDSMITH, Steven T., Department of Geography and the Environment, Villanova University, 800 E. Lancaster Ave., Geography and the Environment, Villanova, PA 19085, HARMON, Brendan A., Landscape Architecture, School of Design, North Carolina State University, Raleigh, NC 27595, ESPINOSA, Jorge, Panama Canal Authority (Retired), Panama City, P.O. Box 0819-05006, Panama and HARMON, Russell S., Dept. of Marine, Earth, & Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695
11:25 AM
PRESERVATION AND POTENTIAL REMOBILIZATION OF RED TIDE TOXINS DEPOSITED IN SHALLOW SOUTHWEST FLORIDA COASTAL SEDIMENTS
JAVARUSKI, James A.1, ADHIKARI, Puspa L.2, MULLER, Joanne3 and MORALES, Ilexxis3, (1)Marine and Earth Sciences, Florida Gulf Coast University., 10501 FGCU Blvd S, Fort Myers, FL 33965, (2)Marine and Earth Sciences, Florida Gulf Coast University, 10501 FGCU Blvd S, Fort Myers, FL 33965, (3)Marine and Earth Sciences, Florida Gulf Coast University, 10501 FGCU Blvd. S., Fort Myers, FL 33965
11:40 AM
INSIGHTS INTO LOW-TEMPERATURE CHEMICAL ALTERATION OF BASALT USING MASS ANALYSIS: APPLICATION TO LAVAS FROM THE COLUMBIA RIVER AND DECCAN FLOOD BASALT PROVINCES
SAWLAN, Michael, U.S. Geological Survey, Geology Minerals Energy and Geophysics Science Center, P.O. Box 158, 350 N Akron Rd, Moffett Field, CA 94035
 
11:55 AM
Discussion
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