Comet Calendar

Dr. Nathan Brown presents "Using luminescence dating to understand geohazards"

Thursday, November 17, 2022 at 4:30pm to 5:30pm

Research and Operations Center (ROC), 2.103
17217 Waterview Pkwy #1.202, Dallas, TX 75252

Abstract: Luminescence measurements provide a chronology of a mineral grain’s exposure to heat and sunlight on timescales of 10 – 10^5 yr. In this talk, I will present three case studies where luminescence signals are used to understand geologic hazards. In the first study, I use luminescence signals from rapidly cooling bedrock to quantify differences in tectonic exhumation along the San Andreas fault in Southern California. This approach can identify which fault strands have been active in the Late Quaternary. In the second study, I estimate the ages of hydrothermal explosions in Yellowstone National Park. Whether these explosions are associated with periods of regional deglaciation informs the current hazard posed to park visitors. In the final study, I estimate how long subglacial bedrock has been covered by ice in the West Antarctic Ice Sheet. The history of ice sheet thinning and recovery in this region has implications for future sea level rise. 

Speaker bio: Nathan is a Quaternary geochronologist interested in tectonic geomorphology, paleoclimate, sediment transport, and geohazards. His work usually integrates field work, luminescence dating and numerical modeling.

Speaker website


Persons with disabilities may submit a request for accommodations to participate in this event at UT Dallas' ADA website. You may also call (972) 883-5331 for assistance or send an email to All requests should be received no later than 10 business days prior to the event.

Event Type

Lectures & Workshops

Target Audience

Undergraduate Students, Faculty & Staff, Prospective Students, Graduate Students



Natural Sciences & Mathematics
Google Calendar iCal Outlook