Wednesday, March 8th, 2017

Wednesday Seminar

4:10 PM, 55 Roessler
Tea and cookies at 3:45 in the aviary - (2110 EPS)

“Building robust kinematic models to better understand complex orogenic systems”

      – by Arlo Weil, Bryn Mawr College

Determining the kinematics of orogenic systems is crucial for improving our understanding of tectonic processes, the mechanics of mountain building, and the dynamic links between plate boundary processes and deformation of foreland structures. My focus in this regard has been on improving our understanding of foreland systems, and in particular investigating the interactions between thick-skin and thin-skin belts; relations of contractional intraplate deformation to plate dynamics including flat-slab subduction; and influences of pre-existing basement and sedimentary cover architecture on subsequent crustal deformation. Toward these ends, detailed mesoscopic structural, strain, anisotropy of magnetic susceptibility (AMS), and paleomagnetic data have been analyzed from over 600 sites in the North American Cordillera, and over 200 sites in the Precordillera and Sierra Pampeanas systems of the Argentinian Andes. These data sets are then be used to test competing kinematic models, and ultimately integrated with existing data to constrain the temporal evolution of foreland deformation and regional tectonic evolution of the North American Cordillera and Argentinian Andes.

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