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The AAPG/Datapages Combined Publications Database

Wyoming Geological Association


Geology of Yellowstone Park Area; 33rd Annual Field Conference Guidebook, 1982
Pages 289-295

Petroleum Geology of the Northern Part of Yellowstone National Park

John J. Tonnsen


Over 10,000 feet of Paleozoic and Mesozoic sedimentary rocks are present in the park region. The strata contain several possible oil and gas source rocks and some potential reservoir rocks. These rocks were folded and thrust faulted during the Late Cretaceous and Early Tertiary, and the region was moderately eroded prior to a major episode of volcanism during the Eocene. The Middle and Late Tertiary was a period of great normal faulting. The region has been subjected to intrusion and repeated volcanic episodes but remains of great interest to petroleum geologists.

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