GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 199
Tuesday, 24 October 2017: 8:00 AM-12:00 PM
Room 606 (Washington State Convention Center)

T69. The Role of Silica in the Earth System: From Organisms to Global Biogeochemical Cycles

GSA Geobiology & Geomicrobiology Division; GSA Sedimentary Geology Division; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division; Paleontological Society; GSA Limnogeology Division
Jonathan P. Wilson, Caroline A.E. Strömberg and Patrick J. Frings, Advocates
8:00 AM
MICROBIAL EFFECTS ON EARLY DIAGENETIC SI CYCLING IN DEEP-SEA AND DELTAIC SEDIMENTS
MICHALOPOULOS, Panagiotis1, KRAUSE, Jeffrey W.2, PICKERING, Rebecca A.3, ROUSELAKI, Eleni1, TAILLEFERT, Martial4, RABOUILLE, Christophe5, RAGUENEAU, Olivier6 and CORVAISIER, Rudolph6, (1)Institute of Oceanography, Hellenic Center for Marine Research, 46.7 km Athens-Sounion An, Anavyssos, 19013, Greece, (2)Dauphin Island Sea Lab, Dauphin Island, AL 36528; University of South Alabama, Mobile, AL 36688, (3)University of South Alabama, Mobile, AL 36688, (4)Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, (5)LSCE/IPSL, Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Gif-sur-Yvette, F-91198, France, (6)LEMAR - UMR CNRS 6539, IUEM-UBO, PLOUZANÉ, F-29280, France, pmichalo@hcmr.gr
8:15 AM
ORGANIC MATTER PRESERVATION IN CHERT: MESOPROTEROZOIC ANGMAAT FORMATION, BAFFIN ISLAND, CANADA
MANNING-BERG, Ashley R., Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, TUITE Jr., Michael L., Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, WILLIFORD, Kenneth H., Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 and KAH, Linda C., Earth and Planetary Sciences, University of Tennessee, 1621 Cumberland Avenue, 602 Strong Hall, Knoxville, TN 37996, aberg@vols.utk.edu
8:30 AM
SPONGES, CONCRETIONS AND CHERT IN THE PHOSPHORIA FORMATION, WYOMING
MOYNIHAN, William C. and TAPANILA, Leif, Department of Geosciences, Idaho State University, 921 S. 8th Avenue, Mail Stop 8072, Pocatello, ID 83209, moynwill@isu.edu
8:45 AM
THE ROLE OF SILICA AS A CHEMICAL SEDIMENT PRIOR TO THE ADVENT OF METAZOAN BIOMINERALIZATION (Invited Presentation)
TROWER, Elizabeth J. and FISCHER, Woodward W., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, ltrower@caltech.edu
 
9:05 AM
Discussion
9:15 AM
NEW INSIGHTS INTO LOW-TEMPERATURE SI ISOTOPE EXCHANGE KINETICS AND FRACTIONATION USING LABORATORY EXPERIMENTS
JOHNSON, Clark, M., ZHENG, Xin-Yuan and BEARD, Brian L., Department of Geoscience, University of Wisconsin-Madison; NASA Astrobiology Institute, 1215 W. Dayton St, Madison, WI 53706, clarkj@geology.wisc.edu
9:30 AM
THEORETICAL CALIBRATION OF THE QUARTZ-WATER TRIPLE OXYGEN ISOTOPE THERMOMETER
HAYLES, Justin A.1, CAO, Xiaobin2, GAO, Caihong3, LIU, Yun3, BAO, Huiming4, HOMANN, Martin5 and YEUNG, Laurence Y.6, (1)Earth, Environmental and Planetary Sciences, Rice University, 6100 Main Street, Houston, TX 77005, (2)Department of Geology and Geophysics, Louisiana State University, E235 Howe Russell, Baton Rouge, LA 70803, (3)State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China, (4)Department of Geology and Geophysics, Louisiana State Univ, Baton Rouge, LA 70803, (5)European Institute for Marine Studies, Brest, France, (6)Department of Earth, Environmental and Planetary Sciences, Rice University, 6100 Main Street, MS-126, Houston, TX 77005, justin.a.hayles@rice.edu
9:45 AM
SILICON ISOTOPE VARIATIONS IN SILICEOUS SINTER DEPOSITS IN HOT SPRINGS: EXAMPLES FROM YELLOWSTONE NATIONAL PARK, WYOMING, U.S.A
CHEN, Xinyang, CHAFETZ, Henry S. and LAPEN, Thomas J., Department of Earth and Atmospheric Sciences, University of Houston, 312 Science and Research 1, Houston, TX 77204, xinyangchen87@gmail.com
10:00 AM
INTERPRETATION OF SILICON ISOTOPE RECORDS IN MARINE SEDIMENTS
FRINGS, Patrick J.1, FONTORBE, Guillaume2 and CONLEY, Daniel J.2, (1)Earth Surface Geochemistry, Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Telegraphenberg, Potsdam, 14473, Germany; Department of Geosciences, Swedish Museum of Natural History, Box 50 007, Stockholm, 104 05, Sweden, (2)Department of Geology, Lund University, Sölvegatan 12, Lund, 22362, Sweden, patrick.frings@gfz-potsdam.de
10:15 AM
PLANTS AND SILICON: A MODERN ECOLOGICAL PERSPECTIVE (Invited Presentation)
COOKE, Julia, School of Earth, Environment and Ecosystem Sciences, The Open University, Walton Hall, Milton Keynes, MK17 8NY, United Kingdom, julia.cooke@open.ac.uk
 
10:35 AM
Discussion
10:45 AM
A GEOBIOLOGICAL PERSPECTIVE ON THE EVOLUTION OF SILICA BIOMINERALIZATION IN PLANTS
WILSON, Jonathan P., Department of Biology, Haverford College, 370 Lancaster Ave., Haverford, PA 19041, TREMBATH-REICHERT, Elizabeth, Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, MCGLYNN, Shawn E., Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo, 152-8550, Japan and FISCHER, Woodward W., Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, jwilson@haverford.edu
11:00 AM
EVOLUTION OF SILICA ACCUMULATION STRATEGIES IN LAND PLANTS AND THE ADAPTIVE VALUE OF PHYTOLITHS
STROMBERG, Caroline A.E.1, BRIGHTLY, William H.2, DI STILIO, Verónica2, SONG, Zhaoliang3 and THUMMEL, Ryan2, (1)Department of Biology, University of Washington, 24 Kincaid Hall, Box 351800, Seattle, WA 98195-1800; Burke Museum of Natural History & Culture, University Of Washington, Box 353010, Seattle, WA 98195-3010, (2)Department of Biology, University of Washington, 24 Kincaid Hall, Box 351800, Seattle, WA 98195-1800, (3)Institute of the Surface-Earth System Science Research, Tianjin University, Tianjin, 300072, China, caestrom@u.washington.edu
11:15 AM
EVOLUTION OF PHYTOLITH DEPOSITION IN MODERN BRYOPHYTES—IMPLICATIONS FOR EARLY LAND PLANTS
THUMMEL, Ryan, STROMBERG, Caroline A.E. and BRIGHTLY, Will, Department of Biology, University of Washington, 24 Kincaid Hall, Box 351800, Seattle, WA 98195-1800, ryanthummel@comcast.net
11:30 AM
ENVIRONMENTAL IMPACTS ON THE PRODUCTION OF SILICA PHYTOLITHS IN GRASSES- POTENTIAL IMPLICATIONS FOR GLOBAL SILICA CYCLING
BRIGHTLY, William H.1, HARTLEY, Sue2, OSBORN, Colin3 and STROMBERG, Caroline A.E.1, (1)Department of Biology, University of Washington, 24 Kincaid Hall, Box 351800, Seattle, WA 98195-1800, (2)York Environmental and Sustainability Institute, University of York, York, YO10 5DD, United Kingdom, (3)Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2TN, United Kingdom, whbright@uw.edu
 
11:45 AM
Discussion
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