PG11A:
Canadian Cratons Through Time: 4.0 Ga of Chemical Evolution and Tectonism

Submit an Abstract to this Session

Session Title - en français: Cratons canadiens: 4.0 milliards d'années d' évolution chimique et tectonique

Session ID#: 6122

Session Description:
The Archean crust constitutes over 65% of the Canadian landmass, divided into six Laurentian domains, each with a unique tectono-thermal history. Underlain by highly melt-depleted and chemically buoyant roots these ancient crustal blocks have not been tectonically as quiescent as their definition implies. Recent work has focused on the Proterozoic collisional belts and magmatic overprinting of Archean tectonism. Further work is required to better understand the pre-2.6 Ga relationship between granitoids and the underlying lithospheric mantle. We invite contributions from the fields of geochemistry, tectonics and geophysics that address any of the following: a) when did Canadian cratons stabilise?; b) how did the crust evolve compositionally and what was the pace of crustal growth?; c) why do physio-chemical probes of adjacent cratonic domains reveal contrasting architecture and what are the implications for their differential origins; d) what was the state of the cratonic lithospheric mantle during the post-Archean tectono-magmatic events?
OSPA Liaison:  Aleksandar Miskovic, University of British Columbia, Earth, Atmospheric and Ocean Sciences, Vancouver, BC, Canada
Chairs:  Aleksandar Miskovic, University of British Columbia, Earth, Atmospheric and Ocean Sciences, Vancouver, BC, Canada, Graham Pearson, University of Alberta, Earth and Atmospheric Sciences, Edmonton, AB, Canada and Bruce M Eglington, University of Saskatchewan, Geological Sciences, Saskatoon, SK, Canada
Primary Convener:  Aleksandar Miskovic, University of British Columbia, Earth, Atmospheric and Ocean Sciences, Vancouver, BC, Canada
Conveners:  Graham Pearson, University of Alberta, Earth & Atmospheric Sciences, Edmonton, AB, Canada and Bruce M Eglington, University of Saskatchewan, Saskatchewan Isotope Laboratory, Saskatoon, SK, Canada
Index Terms:

1020 Composition of the continental crust [GEOCHEMISTRY]
1025 Composition of the mantle [GEOCHEMISTRY]
8103 Continental cratons [TECTONOPHYSICS]
8110 Continental tectonics: general [TECTONOPHYSICS]
Co-Sponsor(s):
  • SE - Solid Earth
  • T - Tectonophysics
  • VGP - Volcanology, Geochemistry, and Petrology

Abstracts Submitted to this Session:

PG11A-02
Ca. 2.17 Ga mafic magmatism in the Superior Craton: a case for a rift-related LIP (35136)
Dejan Milidragovic, Université Laval, Québec City, QC, Canada, Georges Beaudoin, Laval University, Quebec City, QC, Canada and Michael A Hamilton, University of Toronto, Toronto, ON, Canada
PG11A-03
Visualisation of Plate Reconstructions for the Archaean: an example from the Superior Craton (34512)
Bruce M Eglington1, Cameron MacKay1 and Robert Kerrich2, (1)University of Saskatchewan, Geological Sciences, Saskatoon, SK, Canada, (2)University of Saskatchewan, Saskatoon, SK, Canada
PG11A-04
Age and Evolution of Deep Continental Roots beneath Northern Canada (Invited) (33501)
Jingao Liu1, Amy J Riches1, Laura Brin1, Graham Pearson1, Bruce Kienlen2, Bruce A. Kjarsgaard3, Thomas Stachel1 and John P. Armstrong4, (1)University of Alberta, Earth & Atmospheric Sciences, Edmonton, AB, Canada, (2)Canterra Minerals Corp, Vancouver, BC, Canada, (3)Geological Survey of Canada, Ottawa, ON, Canada, (4)Lucara Diamond Corp, Vancouver, BC, Canada
PG11A-05
Geochemistry of the Wijinnedi-Snare, Courageous-MacKay, and Lac du Rocher/Camsell Lake volcanic belts of the Slave craton (35532)
Benjamin Williams1, Brian Cousens1, Alexandra Berger1, Luke Ootes2, Valerie Jackson2 and Michael A Hamilton3, (1)Carleton University, Ottawa, ON, Canada, (2)Northwest Territories Geoscience Office, Yellowknife, NT, Canada, (3)University of Toronto, Toronto, ON, Canada
PG11A-06
The Complex History of the Slave Craton Lithospheric Mantle Root in the Context of Regional Tectonics (36304)
Graham Pearson1, K. A. Mather2, Bruce A. Kjarsgaard3, J Liu1, Maya G Kopylova4, Christopher W Dale5, John P. Armstrong6 and G Irvine2, (1)University of Alberta, Earth & Atmospheric Sciences, Edmonton, AB, Canada, (2)University of Durham, Earth Sciences, Durham, United Kingdom, (3)Geological Survey of Canada, Ottawa, ON, Canada, (4)University of Britich Columbia, Earth & Ocean Sciences, Vancouver, BC, Canada, (5)University of Durham, Department of Earth Sciences, Durham, United Kingdom, (6)Lucara Diamond Corp, Vancouver, BC, Canada
PG11A-07
Age and provenance of Archean basement and Paleoproterozoic supracrustal rocks within Wopmay orogen (36250)
Luke Ootes1, Valerie Jackson1 and William James Davis2, (1)Northwest Territories Geoscience Office, Yellowknife, NT, Canada, (2)Geological Survey of Canada, Ottawa, ON, Canada
See more of: Precambrian Geology