Award Date

5-1-2016

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Geoscience

First Committee Member

Andrew D. Hanson

Second Committee Member

Terry L. Spell

Third Committee Member

Wanda J. Taylor

Fourth Committee Member

Brenda J. Buck

Fifth Committee Member

Liam Frink

Number of Pages

197

Abstract

This dissertation presents three studies that investigate extension in the Southern Snake Range (SSR) metamorphic core complex (MCC) of east-central Nevada and a thermal anomaly associated with the Gypsum Valley salt wall (GVSW) of southwestern Colorado. Low temperature thermochronologic studies using the (U-Th)/He system have been applied in numerous geologic settings to understand erosional and tectonic denudation processes. Two of the studies presented use (U-Th)/He thermochronology, combined with other techniques, to investigate the extensional history of the SSR and the extent of the GVSW thermal anomaly. Both of these studies present novel methods for understanding the thermal histories of the study area using (U-Th)/He thermochronology. The third study uses geologic mapping to document the complexly deformed upper plate of the SSR metamorphic core complex. A full abstract detailing the results of this work is available within the dissertation document.

Keywords

metamorphic core complex; Paradox Basin; Red Ledges quadrangle; salt thermal anomaly; Southern Snake Range; thermochronology

Disciplines

Geology

Language

English

Available for download on Friday, May 14, 2021


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