GSA Annual Meeting in Seattle, Washington, USA - 2017

Session No. 3
Sunday, 22 October 2017: 8:00 AM-12:00 PM
Room 3A (Washington State Convention Center)

D49. Recent Advances in Precambrian Geology

Ross Mitchell and C. Brenhin Keller, Chairs
 
8:00 AM
Introductory Remarks
3-1
8:15 AM
WHAT'S UP WITH RODINIA?
LIU, Chao, Geophysical Laboratory, Carnegie Institution for Science, Washington, DC 20015, KNOLL, Andrew H., Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138 and HAZEN, Robert M., Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington DC, 20015, cliu@carnegiescience.edu
3-2
8:30 AM
A TALE OF TWO ARCS: STARTING AND STOPPING SNOWBALL EARTH
MITCHELL, Ross1, COLLINS, William Joseph1, COX, Grant M.2, MARTIN, Erin3, MURPHY, J. Brendan4, SPENCER, Christopher J.3, RAUB, Timothy D.5 and LI, Zheng-Xiang6, (1)Applied Geology, B312, Curtin University, Bentley, WA 6102, Bentley, WA, 6102, Australia, (2)Earth Sciences, The University of Adelaide, Adelaide, 5005, Australia, (3)Department of Applied Geology, Curtin University, Kent Street, Bentley, 6102, Australia, (4)Department of Earth Sciences, St. Francis Xavier University, Antigonish, NS B2G 2W5, Canada, (5)Department of Earth and Environmental Sciences, University of St. Andrews, Irvine Building, North Street, St. Andrews, KY16 9AL, United Kingdom, (6)Department of Applied Geology, Curtin University of Techology, Department of Applied Geology, Curtin University of Techology, Perth, WA 6845, Australia, ross.mitchell@curtin.edu.au
3-3
8:45 AM
TRIPLE OXYGEN AND HYDROGEN ISOTOPES IN SYN-GLACIAL HYDROTHERMALLY ALTERED ROCKS: COMPARISON BETWEEN MODERN ROCKS OF ICELAND AND SNOWBALL EARTH AGE ROCKS FROM THE BALTIC SHIELD
ZAKHAROV, David1, BINDEMAN, Ilya N.1, FRIÐLEIFSSON, Guðmundur Ó.2 and REED, Mark3, (1)Earth Sciences, University of Oregon, Eugene, OR 97403, (2)HS Orka HF, Reykjanesbær, 260, Iceland, (3)Geological Sciences, University of Oregon, Eugene, OR 97403, davidz@uoregon.edu
3-4
9:00 AM
LOMAGUNDI CARBON-ISOTOPE EXCURSION ON THE AMAZONIAN CRATON
BEKKER, Andrey, Department of Earth Sciences, University of California, Riverside, 900 University Avenue, Riverside, CA 92521, BERNI, Gabriel Valentim, Departamento de Geologia, Centro de Ciências, Universidade Federal do Ceará, Departamento de Geologia, Centro de Ciências, Campus do Pici, Bloco 912, Fortaleza, Ceará, Brazil 60455-760, Fortaleza, 60455-760, Brazil, CABRIAL, Alexandre R., Instituto de Geociências, Universidade Federal de Minas Gerais, Instituto de Geociências - Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6.627, Belo Horizonte, Minas Gerais, Brazil 31270-901, Belo Horizonte, 31270-901, Brazil, DAVIS, Donald, Department of Geology, University of Toronto, Department of Geology, Earth Sciences Centre, University of Toronto, 22 Russell Street, Toronto, Ontario M5S 3B1, Canada, Toronto, ON M5S 3B1, Canada and KARHU, Juha, Geosciences and Geography, University of Helsinki, Gustaf Hällströminkatu 2, P.O.Box 64, Helsinki, FI-00014, Finland, andrey.bekker@ucr.edu
 
9:15 AM
Break
3-5
9:30 AM
RAPID CHANGES IN CRUSTAL DIFFERENTIATION ACROSS THE ARCHEAN-PROTEROZOIC BOUNDARY
KELLER, C. Brenhin, Berkeley Geochronology Center, 2455 Ridge Rd, Berkeley, CA 94709 and SCHOENE, Blair, Department of Geosciences, Princeton University, Guyot Hall, Princeton, NJ 08544, cbkeller@berkeley.edu
3-6
9:45 AM
SILICON ISOTOPE STRATIGRAPHY OF 2.728 TO 2.722 GA IRON FORMATION AND ASSOCIATED SILICIFIED ROCKS FROM THE ABITIBI GREENSTONE BELT, CANADA
BRENGMAN, Latisha Ashley, Department of Earth and Environmental Sciences, University of Minnesota, Duluth, 229 Heller Hall, 1114 Kirby Drive, Duluth, MN 55812, FEDO, Christopher M., Department of Earth & Planetary Sciences, University of Tennessee, 1621 Cumberland Avenue, 602 Strong Hall, Knoxville, TN 37996-1526 and WHITEHOUSE, Martin J., Department of Geosciences, Swedish Museum of Natural History, Stockholm, SE-104 05, Sweden, lbrengma@d.umn.edu
3-7
10:00 AM
POST-GOE IRON FORMATIONS OF THE SãO FRANCISCO CRATON: FILLING THE GAP IN IRON FORMATION RECORDS
ROSIÈRE, Carlos, Dep. of Geology, UFMG, Av. Antonio Carlos 6627, Belo Horizonte, 31270-901, Brazil, BEKKER, Andrey, Dept of Earth Sciences, U California, Riverside, CA, ROLIM, Vassily K., PRCZ Consultores Associados Ltda., R Aristoteles Caldeira, 852, Belo Horizonte, 30430-410, Brazil and SANTOS, João O.S., Centre for Exploration Targeting, The University of Western Australia, 35 Stirling Highway Crawley, Perth, 6009, Australia, crosiere@gmail.com
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