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Map showing publication footprint
  • Usage in publication:
    • Indian Fork member
  • Modifications:
    • First used
  • AAPG geologic province:
    • Great Basin province
    • Snake River basin
Publication:

Bissell, H.J., 1960, Eastern Great Basin Permo-Pennsylvanian strata; preliminary statement: American Association of Petroleum Geologists Bulletin, v. 44, no. 8, p. 1424-1435. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Wells formation divided into (ascending order): Calder Creek, Heglar Canyon, Sublett, and Indian Fork members (all new) in Sublett Mountains, ID in the Great Basin province and Snake River basin. Overlies Milligen formation; underlies Grandeur member of Park City formation. New members shown only on a chart; no definition or description included in report. [Member names should be considered invalid.]

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


Map showing publication footprint
  • Usage in publication:
    • Indian Fork Member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Great Basin province
    • Snake River basin
Publication:

Cramer, H.R., 1971, Permian rocks from Sublett Range, southern Idaho: American Association of Petroleum Geologists Bulletin, v. 55, no. 10, p. 1787-1801. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Underlies newly named Hudspeth Cutoff Sandstone in Sublett Range, of Oneida and Cassia Cos, ID, Great Basin province and of Power Co, ID, Snake River basin. Assigned to Early Permian, Wolfcampian. [Name Indian Fork has never been defined in a publication. Shown only on correlation charts.]

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


Map showing publication footprint
  • Usage in publication:
    • Indian Fork Member†
  • Modifications:
    • Abandoned
Publication:

Yancey, T.E., Ishibashi, G.D., and Bingman, P.T., 1980, Carboniferous and Permian stratigraphy of the Sublett Range, south-central Idaho, IN Fouch, T.D., and Magathan, E.R., eds., Paleozoic paleogeography of the west-central United States: Society of Economic Paleontologists and Mineralogists, Rocky Mountain Section, Rocky Mountain Paleogeography Symposium, v. 1, p. 259-269.


Summary:

Name previously used as the upper member (of 4) of the Wells Formation abandoned. Is equivalent to part of Tussing Formation and Trail Canyon Formation. Nomenclature chart.

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


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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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