Post-12 Ma deformation of the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation
December 20, 2019
Structural evidence presented here documents that deformation was ongoing within the lower Colorado River corridor (southwestern USA) during and after the latest Miocene Epoch, postdating large-magnitude extension and metamorphic core complex formation. Geometric and kinematic data collected on faults in key geologic units constrain the timing of deformation in relation to the age of the Bouse Formation, a unit that records the first arrival and integration of the Colorado River. North-south–striking extensional, NW-SE–striking oblique dextral, NE-SW–striking oblique sinistral, and east-west–striking contractional faults and related structures are observed to deform pre– (>6 Ma), syn– (6–4.8 Ma), and post–Bouse Formation (
Citation Information
| Publication Year | 2020 |
|---|---|
| Title | Post-12 Ma deformation of the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation |
| DOI | 10.1130/GES02104.1 |
| Authors | Jacob Thacker, Karl Karlstrom, Laura Crossey, Ryan S. Crow, Colleen Cassidy, L. Sue Beard, John Singleton, Evan Strickland, Nikki Seymour, Michael Wyatt |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Geosphere |
| Index ID | 70206612 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Geology, Minerals, Energy, and Geophysics Science Center |
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