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  • Usage in publication:
    • Willow Spring member
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Great Basin province
Publication:

Arnold, C.A., and Sadlick, Walter, 1962, A Mississippian flora from northeastern Utah and its faunal and stratigraphic relations: University of Michigan, Museum of Paleontology Contributions, v. 17, no. 11, p. 241-263.


Summary:

Shown in correlation chart as second from uppermost member of Chainman Formation in Silver Island Range, western UT. Consists of limestone. Underlies Jensen member (new); overlies Diamond Peak member (both of Chainman Formation). "The Jensen and Willow Spring members will be introduced subsequently." p.251. [Note that Walter Sadlick later introduced "Willow Gap Limestone Member" of Chainman Formation in PhD thesis (Dissertation Abstracts v.26 p.5978)]. CANINIA corals are quite common in upper part of member. Age given as Mississippian.

Source: GNU records (USGS DDS-6; Menlo 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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