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Geologic Unit: Cub
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Map showing publication footprint
  • Usage in publication:
    • Cub Tongue*
  • Modifications:
    • Named
  • Dominant lithology:
    • Claystone
  • AAPG geologic province:
    • Great Basin province
    • Wasatch uplift
Publication:

Oriel, S.S., Armstrong, F.C., Fritz, W.H., and Palmer, A.R., 1971, Uppermost Precambrian and lowest Cambrian rocks in southeastern Idaho, with contributions to early Middle Cambrian faunal zones: U.S. Geological Survey Professional Paper, 394, 52 p. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp394]


Summary:

Pg. 2, 33, 36, pls. 4-7. Cub Tongue proposed for the uppermost unit of Lead Bell Shale (new); farther east it is reassigned as Cub Shale Member, lowermost unit of Ute Limestane where two-fold subdivision is possible. Cub Tongue grades into Cub Shale Member to the east on Wasatch uplift. Includes the dark gray to black claystone formerly incorrectly designated the Spence Shale Member of the Ute Limestone. Overlies High Creek Limestone; underlies Bancroft Limestone in the east. [Thickness not stated.] Age is Middle Cambrian; trilobites (ELRATHINA and PERONOPSIS), indicative of BATHYURISCUS-ELRATHINA trilobite assemblage zone, recovered from 25 feet below top of unit at type Lead Bell. (Cub Tongue of Lead Bell Shale and Cub Shale Member of Ute Limestone adopted by the USGS.)
Type locality (of Coulter, 1956, p. 10-11): in sec. 4, T. 16 S., R. 41 E., Preston quadrangle, Franklin Co., ID. Named from development along Maple Creek 2.5 mi west of Cub basin.
Reference cited: Coulter, H.W., 1956, Idaho Bur. Mines and Geol. Pamphlet, no. 107, 48 p.

Source: Publication; Changes in stratigraphic nomenclature, 1972 (USGS Bull. 1394-A, p. A12-A13); US geologic names lexicon (USGS Bull. 1520, p. 76); 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 ([ ]).