CTG Online Series
The Canadian Tectonics Group (CTG) Online Series will be held in Fall and Winter 2020/2021, starting in late September 2020 in Zoom. The Zoom link will be available only to the CTG members or those ones who are subscribed to the CTG Mailing List. If you are interested in giving a talk in the upcoming series, please contact Nadia Mohammadi at Nadia.mohammadi@unb.ca or Gabriel Sombini Dos Santos (Gabriel.santos@uwaterloo.ca).
TALKS AVAILABLE AT THE OFFICIAL CTG YOUTUBE CHANNEL
The Canadian Tectonics Group (CTG) Online Series will be held in Fall and Winter 2020/2021, starting in late September 2020 in Zoom. The Zoom link will be available only to the CTG members or those ones who are subscribed to the CTG Mailing List. If you are interested in giving a talk in the upcoming series, please contact Nadia Mohammadi at Nadia.mohammadi@unb.ca or Gabriel Sombini Dos Santos (Gabriel.santos@uwaterloo.ca).
TALKS AVAILABLE AT THE OFFICIAL CTG YOUTUBE CHANNEL
UPCOMING TALKS:
Mike Duvall (University of Alberta, LinkedIn): "Active Faulting and Subsurface Structural Variability of the Himalayan Foreland Basin, Nepal", September 29th, 2020 @ 1:00 Pm EST.
Abstract:
Foreland basin stratigraphy can be used to investigate the behaviour of basement features during continent-continent collision, and to test links between basement structure, along-strike segmentation of deformation, and lithospheric flexure in a developing orogen. The Himalayan orogen has been segmented along its strike at the scale of hundreds of kilometres. This segmentation is apparent from along-strike changes in earthquake rupture patterns, thickness changes, deformation styles, topographic gradients, thermal evolution, and faults at oblique angles to the orogen. Heterogeneities in the Indian plate, such as crustal scale basement faults and ridges, are possible controls on this lateral segmentation. Understanding the driving mechanisms of this longitudinal variability could further our understanding of the orogen, and potentially improve earthquake hazard assessment.
Using 2D seismic reflection data, we mapped several regional horizons to characterize the geometry of the Ganga Basin, Nepal. Our findings suggest that basement features have been inherited by the Himalayan foreland basin, controlling accommodation. These basement features likely play a key role in the spatial localization of active deformation and may influence seismicity patterns varying along strike of the orogen. We also demonstrate that Himalayan ruptures may pass under the present-day trace of the Main Frontal Thrust as blind faults inaccessible to trenching, and that paleoseismic studies may underestimate Holocene convergence.
UPCOMING CTG 2020-2021 AUTUMN-WINTER SEMINAR SERIES:
September 29th, 2020, 1 Pm EST. Mike Duvall, University of Alberta.
October 20th, 2020, 1 Pm EST. David Corrigan, Geological Survey of Canada, Ottawa.
November 17th, 2020, 1 Pm EST. Jillian Kendrick, University of Waterloo.
December 2020: TBA
January 19th, 2021, 1 Pm EST. David Orenstein, University of Toronto.
January 26th, 2021, 1 Pm EST. Cees van Staal, Geological Survey of Canada.
February 23rd, 2021, 1 Pm EST. Eric Thiessen, Laurentian University.
March, 2021, 1Pm EST. Claire Currie, University of Alberta.
April 2021: TBA
CTG 2020 SUMMER SEMINAR SERIES:
August 11th, 1 Pm EST, Alissa Kotowski, McGill University, Structural petrology and petrochronology record subduction, underplating, and return flow in the Cycladic Blueschist Unit exposed on Syros Island, Greece
July 28th, 1 PM EST, Alana Hinchey, Geological Survey of Newfoundland and Labrador
Crustal recycling during the assembly of NUNA: Geochemical and isotopic constraints from felsic magmatism in the Makkovik Province, Labrador
June 30th, 1 PM EST, Spencer Fuston, University of Houston
Raising the Resurrection Plate from an Unfolded-Slab Plate Tectonic Reconstruction of the NW Cordillera since Early Cenozoic Time
June 2nd, 1 PM EST, Pascal Audet, University of Ottawa
Tectonics of the northern Canadian Cordillera from a geophysical perspective
June 16th, 1 PM EST, Clare Warren, Open University
From the bottom to the top: exploring the depths of the NW Bhutan Himalaya
May 19, 1 PM EST, Noah Phillips, Texas A&M
The geological record of slow to seismic slip from an exhumed shallow subduction zone
May 5, 1 PM EST, Sean Kelly, Dalhousie University
Enigmatic Himalayan-Tibetan evolution explained by mantle delamination of Tibetan accreted terranes