Abstract
The Church Buttes arch extends from the Bridger Lake field in northern Utah northward through the Church Buttes field to the Big Piney-La Barge field in southwestern Wyoming, a distance of approximately 120 mi. The arch is considered an overthrust structure. Deformation of the Absaroka thrust zone and the Church Buttes arch occurred during the Late Cretaceous as the result of the same tectonic forces. Folding of the arch resulted in localization of oil and gas accumulations in Mesozoic and Paleozoic rocks. Oil and gas production from combination structural-stratigraphic traps, directly related to the folding of the arch, has been established in the Cretaceous Frontier, Bear River, and Dakota Formations, and the Pennsylvanian Morgan Formation. Continued exploration of the rch should result in additional discoveries in both Mesozoic and Paleozoic rocks. End_of_Article - Last_Page 911------------
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