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  • Usage in publication:
    • Ferron Mountain Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
    • Mudstone
  • AAPG geologic province:
    • Wasatch uplift
Publication:

Stanley, K.O., and Collinson, J.W., 1979, Depositional history of Paleocene-lower Eocene Flagstaff Limestone and coeval rocks, central Utah: American Association of Petroleum Geologists Bulletin, v. 63, no. 3, p. 311-323. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Named as the basal member (of 3) of Flagstaff Limestone for Ferron Mountain in the Flagstaff Peak and Heliotrope 7 1/2 min quads, Sanpete Co, UT on the Wasatch uplift. Is well-exposed in cliffs and slopes along south face of Ferron Mountain in sec 32, T19S, R5E. Characterized by limestone, dolomitic limestone, mudstone, and sparse sandstone lenses. Contains abundant beds of blue, gray, and olive-gray micrite, biomicrite, packed biomicrite, and intramicrite, some having desiccation cavities, breccia filling, root, crossbeds, horizontal beds, and structureless pelsparite, oosparite, and biosparite. Is 165 m thick on Ferron Mountain where it overlies North Horn Formation and underlies Cove Mountain Member. Thought to be of late Paleocene age. Is part of a lacustrine-alluvial complex.

Source: GNU records (USGS DDS-6; Denver GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

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