2020 Numerical models of lower crustal flow explain Yellowstone's "tectonic parabola"
| Category: | Webinars |
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| Description: | Jonathan Perry-Houts, UC Davis. Several hypotheses exist for the origin of the seismically active region of high topography surrounding the Yellowstone hotspot track. Among these is the idea that a dense mid-crustal sill has driven viscous lower crust away from the hotspot track, producing crustal thinning/subsidence in the Snake River Plain, and corresponding inflation/uplift of the surrounding terrain. Recent evidence of azimuthally-aligned seismic anisotropy in the lower crust has led us to investigate the dynamics of lower crustal flow, and its role as a non-tectonic driver of localized epeirogeny. In this GIG webinar, I will describe ongoing work to quantify this mechanism, including an efficient numerical method for modeling lower crustal flow, and its potential application to geodynamic models. |
| When: | Thursday 12 November, 2020, 2:00 pm - 3:00 pm PST |
| Where: | zoom |
| Website: | https://geodynamics.hubzero.org/outreach/webinars |
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