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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 55 (1971)

Issue: 10. (October)

First Page: 1787

Last Page: 1801

Title: Permian Rocks from Sublett Range, Southern Idaho

Author(s): Howard Ross Cramer (2)


More than 22,000 ft of Lower and Middle Permian rocks disconformably(?) overlie Wolfcampian rocks and conformably underlie Guadalupian Park City Formation rocks in the Sublett Range in southern Idaho. These are thick, cherty, and calcareous sandstone strata interlayered with cherty, sandy, limestone beds and are, from oldest to youngest: Hudspeth Cutoff Sandstone (Wolfcampian?, 3,500 ft), limestones (age uncertain, 7,000+ ft), Tussing Sandstone (age uncertain, 2,600 ft), Trail Canyon Limestone (Leonardian, 4,000 ft), and Heydlauff Sandstone (Leonardian, 5,000 ft). They resemble in part the Ketchum sequence of central Idaho. A new basin, the Sublett, is proposed as the sedimentary repository of these rocks.

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