# \[CIG-ALL\] CIG Webinar: Jonathan Perry-Houts. Nov 12 @2P PT, Numerical models of lower crustal flow explain Yellowstone's "tectonic parabola" - **URL:** \ **Category:** Announcements\ **Created:** [November 6, 2020, 5:54pm UTC](https://community.geodynamics.org/t/cig-all-cig-webinar-jonathan-perry-houts-nov-12-2p-pt-numerical-models-of-lower-crustal-flow-explain-yellowstones-tectonic-parabola/1569 "2020-11-06T17:54:36Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![ljhwang](https://yyz2.discourse-cdn.com/flex036/user_avatar/community.geodynamics.org/ljhwang/32/8_2.png) [@ljhwang](https://community.geodynamics.org/u/ljhwang)\ **Post date:** [November 6, 2020, 5:54pm UTC](https://community.geodynamics.org/t/cig-all-cig-webinar-jonathan-perry-houts-nov-12-2p-pt-numerical-models-of-lower-crustal-flow-explain-yellowstones-tectonic-parabola/1569/1 "2020-11-06T17:54:36Z")
### \*\*\* NEXT WEEK’S CIG WEBINAR \*\*\*### **THURSDAY NOVEMBER 12 @ 2P PT** **Numerical models of lower crustal flow explain Yellowstone’s "tectonic parabola"** _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. [[zoom](https://ucdavis.zoom.us/j/96556894599)]