Eocene extension of early Eocene lacustrine strata in a complexly deformed Sevier-Laramide hinterland, Northwest Utah and Northeast Nevada.
Potter, Christopher J; Dubiel, Russell F; Snee, Lawrence W; Good, Steven C (1995) Eocene extension of early Eocene lacustrine strata in a complexly deformed Sevier-Laramide hinterland, Northwest Utah and Northeast Nevada. Geology Boulder. 23; 2, Pages 181-184. 1995.
| Authors | Potter, Christopher J; Dubiel, Russell F; Snee, Lawrence W; Good, Steven C |
|---|---|
| Year | 1995 |
| Title | Eocene extension of early Eocene lacustrine strata in a complexly deformed Sevier-Laramide hinterland, Northwest Utah and Northeast Nevada. |
| Source | Geology Boulder. 23; 2, Pages 181-184. 1995. |
| Publisher | Geological Society of America GSA. Boulder, CO, United States. 1995. |
| Document type | Serial |
| ISSN | 0091-7613 |
| GeoRef | 1995-021624 |
| Keywords | absolute-age; Ar-Ar; Basin-and-Range-Province; biostratigraphy-; Cenozoic-; dates-; deformation-; Elko-County-Nevada; Eocene-; extension-; extension-faults; faults-; Great-Basin; Invertebrata-; lacustrine-environment; Laramide-Orogeny; lower-Eocene; Mollusca-; Nevada-; normal-faults; North-America; northeastern-Nevada; northwestern-Utah; orogeny-; Paleogene-; sedimentary-rocks; sedimentation-; Sevier-orogenic-belt; Tertiary-; Tooele-County-Utah; United-States; Utah-; White-Sage-Formation |
| DOI | 10.1130/0091-7613(1995)023<0181:EEOEEL>2.3.CO;2 |
Abstract
New data from a small enclave that did not undergo significant Neogene tectonism in northwest Utah document Eocene tilting, normal faulting, and folding of the early Eocene lacustrine White Sage Formation. This deformation was part of a complexly deformed Eocene Sevier-Laramide hinterland that underwent east-west contraction and extension indifferent areas and ultimately gave way to widespread Oligocene extension in the eastern Great Basin. Such mixed-mode supracrustal Eocene tectonism may reflect local adjustments to maintain a state of regional gravitational equilibrium, or may record responses to changing plate convergence rates at the west edge of the continent.