Upper Oligocene evaporites in basin fill of Sevier Desert region, western Utah

American Association of Petroleum Geologists Bulletin
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Abstract

The basin fill beneath the Sevier Desert of western Utah contains evaporites that were deposited in a broad closed basin. All of the basin fill penetrated by the Gulf Oil 1 Gronning contains abundant volcanic detritus and its alteration products of Cenozoic age. Fission-track dating of tuffaceous sandstone yields ages of 26-28 m.y. Fossil pollen from mudstone in the evaporite-bearing strata includes forms no older than late Oligocene, in good agreement with the fission-track ages. Thus the age of evaporites is late Oligocene and younger. Anhydrite is present throughout approximately 900m of volcaniclastic rocks in the lower part of the section cut by the Gulf hole. Fossil pollen are indicative of an arid to semiarid flora.-from Authors

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Publication type Article
Publication Subtype Journal Article
Title Upper Oligocene evaporites in basin fill of Sevier Desert region, western Utah
Series title American Association of Petroleum Geologists Bulletin
DOI 10.1306/2F9197B5-16CE-11D7-8645000102C1865D
Volume 65
Issue 2
Year Published 1981
Language English
Publisher American Association of Petroleum Geologists
Description 10 p.
First page 251
Last page 260
Country United States
State Utah
Other Geospatial Sevier Desert region
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