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GSA 2020 Connects Online

Session No. 73
Tuesday, 27 October 2020: 1:30 PM-5:30 PM

T32. Assembling Laurentia: Turning Points in Paleoproterozoic Tectonic Evolution I

Mineralogical Society of America; GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division; GSA Structural Geology and Tectonics Division

 

David Corrigan, Camille A. Partin and Kevin H. Mahan, Advocates
Paper #
Start Time
73-1
1:30 PM
PROGRADE P-T PATHS OF ARCHEAN HIGH-GRADE GARNET-BEARING LITHOLOGIES FROM THE EASTERN BEARTOOTH MOUNTAINS, MONTANA, USA: INSIGHTS FROM QUIG RAMAN GEOBAROMETRY AND MINERAL CHEMICAL THERMOMETRY
TUTTLE, Larry and HENRY, Darrell J., Dept. of Geology and Geophysics, Louisiana State University, Baton Rouge, LA 70803
73-2
1:45 PM
ARCHEAN IRON FORMATIONS, A COMPARISON FROM THE SINGHBHUM AND WYOMING CRATONS
MILLER, Scott R.1, VELARDE, Landon D.2, MUELLER, Paul A.3, MEERT, Joseph G.4, PANDIT, M.K.5, KAMENOV, George D.3 and SINHA, Anup K.6, (1)Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville, NY 32601, (2)School of Earth Sciences, The University of Melbourne, Grattan Street, Parkville, VIC 3010, Australia, (3)Department of Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville, FL 32611, (4)Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville, NY 32611, (5)Department of Geology, University of Rajasthan, Jaipur, 302004, India, (6)Indian Institute Of Geomagnetism, Dr. K.S. Krishnan Geomagnetic Research Laboratory, Chamanganj Bazaar, Jhunsi, PO-Hanumanganj, Via-Hetapur, Allahabad, 221505, India
73-3
2:00 PM
END OF THE ARCHEAN: WHIMPER OR BANG?
MUELLER, Paul A., Department of Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville Florida, FL 32611, MOGK, D.W., Dept. Earth Sciences, Montana State Univ, Bozeman, MT 59717, FROST, Carol D., Department of Geology and Geophysics, University of Wyoming, Dept. 3006, 1000 E. University Avenue, Laramie, WY 82071 and GIFFORD, Jennifer, Department of Geology and Geological Engineering, The University of Mississippi, University, Oxford, MS 38677
73-4
2:15 PM
BORN STRONG IS NOT ENOUGH: THE MAKING AND BREAKING OF CRATONS
FROST, Carol D., Department of Geology and Geophysics, University of Wyoming, Dept. 3006, 1000 E. University Avenue, Laramie, WY 82071, BEDLE, Heather, School of Geosciences, University of Oklahoma, 100 E Boyd St, Suite 710, Norman, OK 73019 and COOPER, Catherine M., Washington State University, School of the Environment, Pullman, WA 99164
 
2:30 PM
Introductory Remarks
73-5
2:35 PM
ASSEMBLING NUNA: WHAT, WHEN AND WHERE? A PERSPECTIVE FROM DEEP-TIME PLATE RECONSTRUCTION MODELLING (Invited Presentation)
EGLINGTON, Bruce1, EVANS, David2, FERRACCIOLI, Fausto3, PEHRSSON, Sally4, NGUYEN, Hoang Anh Tu1, HUSTON, David5 and ARMISTEAD, Sheree6, (1)Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, SK S7N 5E2, Canada, (2)Geology and Geophysics, Yale University, 210 Whitney Ave, New Haven, CT 06511, (3)British Antarctic Survey, Cambridge, United Kingdom, (4)Geological Survey of Canada, 601 Booth Street, Ottawa, ON K1A 0E8, Canada, (5)Geoscience Australia, GPO Box 378, Canberra, 2601, Australia, (6)Laurentian University, Sudbury, ON P3E 2C6, Canada
73-6
2:50 PM
RAIDERS OF THE LOST ARC: PRE-RODINIA COLLISIONAL EVENTS ALONG LAURENTIA’S WESTERN MARGIN ROB EASTERN AUSTRALIA OF ITS PALEOPROTEROZOIC MAGMATIC ARC AND ACCRETIONARY PRISM
GIBSON, George, Research School of Earth Sciences, Australian National University, 61 Mills Road, Acton, Canberra, ACT 2601, Australia, CHAMPION, David C., Minerals, Energy and Water Division, Geoscience Australia, Cnr Hindmarsh and Jerrabomberra Drives, Symonston, ACT 2604, Australia and HUSTON, David, Geoscience Australia, GPO Box 378, Canberra, 2601, Australia
73-7
3:05 PM
NEOARCHEAN-PALEOPROTEROZOIC BASEMENT OF SOUTHWEST LAURENTIA FORMED ADJACENT TO THE MAWSON CONTINENT
WILHELMI, Ryan M., FOSTER, David A. and MUELLER, Paul A., Department of Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville Florida, FL 32611
73-8
3:20 PM
WHAT WERE THE MOST IMPORTANT PALEOPROTEROZOIC EVENTS IN THE ASSEMBLY OF LAURENTIA? A VIEW FROM SOUTH OF THE BORDER (Invited Presentation)
BICKFORD, Marion E., Department of Earth Sciences, Syracuse University, 204 Heroy Geology Laboratory, Syracuse, NY 13244
73-9
3:35 PM
PLATE TECTONICS DURING THE 1.9 – 1.7 GA ASSEMBLY OF NUNA; EXAMPLES OF MODERN CRUSTAL COLLISION AND TRANSPORT PROCESSES FROM THE SOUTHEASTERN CHURCHILL PROVINCE (Invited Presentation)
VAN ROOYEN, Deanne, Department of Mathematics, Physics, and Geology, Cape Breton University, Sydney, NS B1P 6L2, Canada and CORRIGAN, David, Geological Survey of Canada, Central Canada Division, 497-601 Booth St., Ottawa, ON K1A 0E8, Canada
 
3:50 PM
Break
73-10
4:05 PM
LOCALIZED BACKARC RIFTING DURING THE PALEOPROTEROZOIC ASSEMBLY OF LAURENTIA: GEOCHEMICAL AND ISOTOPIC EVIDENCE FROM MAFIC MAGMATISM, LABRADOR, CANADA
HINCHEY, Alana M., Geological Survey, Government of Newfoundland and Labrador, P.O. Box 8700, St. John's, NF A1B 4J6, Canada
73-11
4:20 PM
LATE-STAGE DEXTRAL TRANSPRESSION IN THE PALEOPROTEROZOIC BIG SKY OROGEN OF SOUTHWESTERN MONTANA: IMPLICATIONS FOR SHEAR ZONE HETEROGENEITY AND EVOLUTION OF THE NORTHERN WYOMING CRATON
MAHAN, Kevin H., Department of Geological Sciences, University of Colorado Boulder, 2200 Colorado Avenue, UCB 399, Boulder, CO 80309-0399, BRIDGES, Jae, Earth, Ocean, and Atmospheric Sciences, Oregon State University, 104 CEOAS Admin. Bldg., Corvallis, OR 97331, GODANA, Keneni, University of Illinois at Chicago, 5801 S Ellis Ave, Chicago, IL 60637 and CONDIT, Cailey B., Department of Earth and Space Sciences, University of Washington, Seattle, WA 98195
73-12
4:35 PM
TECTONICS OF WSW RAE CRATON OF LAURENTIA; EVIDENCE FOR CRUSTAL ASSEMBLY BY COLLISIONAL, ACCRETIONARY PROCESSES FROM THE MID-NEOARCHEAN TO EARLY PALEOPROTEROZOIC
BETHUNE, Kathryn1, ASHTON, Kenneth2, CARD, Colin2, CLOUTIER, Michael1 and DEANE, Jordan1, (1)Department of Geology, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada, (2)Saskatchewan Geological Survey, 1945 Hamilton Street, Regina, SK S4P 2C8, Canada
73-13
4:50 PM
GEOLOGY ACROSS THE NOLAN-ZEMLAK DOMAIN BOUNDARY, A CRYPTIC EARLY-ARROWSMITH (CA. 2.52 GA) COLLISIONAL SUTURE IN THE WSW RAE CRATON
CLOUTIER, Michael1, BETHUNE, Kathryn1, ASHTON, Kenneth2 and DEANE, Jordan1, (1)Department of Geology, University of Regina, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada, (2)Saskatchewan Geological Survey, 1945 Hamilton Street, Regina, SK S4P 2C8, Canada
73-14
5:05 PM
EVOLUTION OF PROTEROZOIC EARTH'S MAGNETIC FIELD IN THE CONTEXT OF PLATE TECTONICS
SEARS, James W., Department of Geosciences, University of Montana, Missoula, MT 59812
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