GSA 2020 Connects Online

Session No. 247
Friday, 30 October 2020: 10:00 AM-2:00 PM

T93. Lithospheric Structure and Evolution of Cratons

GSA Geophysics and Geodynamics Division; GSA Structural Geology and Tectonics Division

 

Fiona Darbyshire and Andrew Frederiksen, Advocates
Paper #
Start Time
 
10:00 AM
Introductory Remarks
10:05 AM
LITHOSPHERE STRUCTURE AND MANTLE DYNAMICS AT THE WESTERN EDGE OF THE LAURENTIAN CRATON (Invited Presentation)
CURRIE, Claire A.1, SCHAEFFER, Andrew J.2, AUDET, Pascal3 and MALLYON, Deirdre1, (1)Department of Physics, University of Alberta, Edmonton, AB T6G 2E1, Canada, (2)Geological Survey of Canada, Pacific Division, Vancouver, BC V6B 5J3, Canada, (3)Earth and Environmental Science, University of Ottawa, 120 University Pr, FSS Hall 15032, Ottawa, ON K1N 6N5, Canada
10:20 AM
CRATON STABILITY: WHAT ABOUT SHAPE?
COOPER, Catherine M., Washington State University, School of the Environment, Pullman, WA 99164, FARRINGTON, Rebecca, School of Earth Sciences, University of Melbourne, Melbourne, VIC 3053, Australia and MILLER, Meghan S., Research School of Earth Sciences, Australian National University, Building 142 Mills Road, Canberra, ACT 2601, Australia
10:50 AM
CRUSTAL STRUCTURE OF THE EASTERNMOST CANADIAN SHIELD: EVIDENCE FROM RECEIVER FUNCTION ANALYSIS IN NORTHERN QUÉBEC AND LABRADOR
DARBYSHIRE, Fiona and VERVAET, François, Geotop, University of Quebec at Montreal, CP8888 succursale Centre-Ville, Montreal, QC H3C3P8, Canada
 
11:05 AM
Discussion
11:15 AM
THE COMPOSITIONAL AND THERMAL STRUCTURE OF THE LITHOSPHERE AND UPPER MANTLE BENEATH THE SUPERIOR CRATON: RESULTS FROM MULTI-OBSERVABLE PROBABILISTIC INVERSION
DAVE, Riddhi1, DARBYSHIRE, Fiona1, AFONSO, Juan Carlos2 and ALI, Khaled3, (1)Geotop, University of Quebec at Montreal, CP8888 succursale Centre-Ville, Montreal, QC H3C3P8, Canada, (2)Earth and Environmental Sciences, Macquarie University, Level 1, Office 124, 12 Wally's Walk (E7A), North Ryde, Sydney, NSW 2109, Australia, (3)De Beers – Exploration Canada, De Beers Group, 515 Consumers Road, Suite 300, Toronto, ON M2J 4Z2, Canada
11:30 AM
IMAGING THE 3-D LITHOSPHERIC STRUCTURE OF CRATONS WITH MAGNETOTELLURIC DATA : EXAMPLES FROM WESTERN LAURENTIA (Invited Presentation)
UNSWORTH, Martyn1, WANG, Enci2 and BETTAC, Sean2, (1)Physics, University of Alberta, Edmonton, AB T6G 2E1, Canada, (2)Physics, University of Alberta, Edmonton, AB T6G 2J1, Canada
11:45 AM
RECONCILING SEISMIC STRUCTURES AND LATE CRETACEOUS KIMBERLITE MAGMATISM IN NORTHERN ALBERTA, CANADA
CHEN, Yunfeng1, GU, Yu Jeffrey1, HEAMAN, Larry M.2, WU, Lei3, SAYGIN, Erdinc4 and HUNG, Shu-Huei5, (1)Department of Physics, University of Alberta, Edmonton, AB T6G 2E1, Canada, (2)Earth and Atmospheric Sciences, University of Alberta, 1-23 Earth Sciences Building, Edmonton, AB T6G2E3, Canada, (3)Department of Geology, Curtin University, 321.3, 312, Curtin University, Brand Dr., Perth, WA 6102, Australia, (4)Deep Earth Imaging, CSIRO, Perth, WA 6100, Australia, (5)Department of Geosciences, National Taiwan University, Taipei, 13-318, Taiwan
12:00 PM
CONTINENTAL LITHOSPHERE AND MANTLE PLUMES (Invited Presentation)
LEBEDEV, Sergei, CELLI, Nicolas Luca and CIVIERO, Chiara, Geophysics Section, Dublin Institute for Advanced Studies, 5 Merrion Square, Dublin, 2, Ireland
 
12:15 PM
Discussion 2
12:25 PM
SPECTRAL ANALYSIS WITH PIECEWISE REGRESSION APPROACH (SAPRA) OF GRAVITY DATA FOR LITHOSPHERIC STRUCTURE IMAGING: THE LAKE TURKANA RIFT BASIN OF THE EAST AFRICAN RIFT SYSTEM
EMISHAW, Luelseged, Boone Pickens School of Geology, Oklahoma State University, 105 Noble Research Center, Stillwater, OK 74078-3031, MICKUS, Kevin L., Dept. of Geography, Geology, and Planning, Missouri State University, Springfield, MO 65897 and ABDELSALAM, Mohamed G., Boone Pickens School of Geology, Oklahoma State University, Stillwater, OK 74078
12:40 PM
A MULTI-OBSERVABLE JOINT INVERSION FOR SOUTHERN AND CENTRAL AFRICA IN FULL 3D
FOMIN, Ilya1, BEN MANSOUR, Walid2, AFONSO, Juan Carlos1, MACDONALD, Andrew3 and JANUSZCZAK, Nicole4, (1)Earth and Environmental Sciences, Macquarie University, Level 1, Office 124, 12 Wally's Walk (E7A), North Ryde, Sydney, NSW 2109, Australia, (2)Department of Earth and Planetary Sciences, Washington University in Saint Louis, Saint Louis, MO 63130; Earth and Environmental Sciences, Macquarie University, Level 1, Office 124, 12 Wally's Walk (E7A), North Ryde, Sydney, NSW 2109, Australia, (3)Exploration Team, De Beers Group, Johannesburg, South Africa, (4)De Beers Group, Toronto, ON 0000, Canada
12:50 PM
MODELING THE STABILITY OF CRATONS CONTAINING PRE-EXISTING WEAKNESSES
CONNER, Shannon, School of the Environment, Washington State University, PO Box 642812, Washington State University, Pullman, WA 99164-2812 and COOPER, Catherine M., Washington State University, School of the Environment, Pullman, WA 99164
1:00 PM
THE EFFECT OF MID-LITHOSPHERIC DISCONTINUITY ON THE STABILITY OF CRATON
GUO, Qionghua, MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China; Institute of Geophysics, Huazhong University of Science and Technology, Wuhan, 430074, China and WANG, Huilin, Institute of Geophysics, Huazhong University of Science and Technology, Wuhan, 430074, China; MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan, AB 430074, China
 
1:10 PM
Concluding Remarks
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