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Map showing publication footprint
  • Usage in publication:
    • Cameron Creek shales
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Central Montana uplift
Publication:

Hadley, H.D., and Lewis, P.J., 1956, Catalog of formation names for central Montana and adjacent areas, IN Foster, D.I., ed., Judith Mountains, central Montana: Billings Geological Society Guidebook, August 16-18, 1956, no. 7, p. 141-150.


Summary:

Pg. 142. Cameron Creek shales. Varicolored shale with occasional thin limestones and irregular white to ferruginous sandstones. Thickness 50 to 300 feet. Overlies Heath shale and underlies Alaska Bench limestone. Name credited to L.S. Gardner.

Source: US geologic names lexicon (USGS Bull. 1200, p. 592).


Map showing publication footprint
  • Usage in publication:
    • Cameron Creek formation*
  • Modifications:
    • Principal reference
  • Dominant lithology:
    • Sandstone
    • Conglomerate
    • Siltstone
    • Shale
    • Limestone
  • AAPG geologic province:
    • Central Montana uplift
Publication:

Gardner, L.S., 1959, Revision of Big Snowy group in central Montana: American Association of Petroleum Geologists Bulletin, v. 43, no. 2, p. 329-349. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Pg. 332 (fig. 2), 334 (fig. 3), 335, 336 (fig. 4), 339, 343, 347. Cameron Creek formation. Included in Big Snowy group. Thickness at type locality herein designated 222 feet. Underlies Alaska Bench limestone; overlies Heath formation. Reasons for using Cameron Creek in preference to Tyler formation presented. Age is Mississippian or Pennsylvanian.
Type locality: canyon of one of tributaries of south-draining Cameron Creek, a few hundred feet north of Stonehouse Ranch headquarters, in sec. 31, T. 11 N., R. 21 E., Golden Valley Co., central MT, on southeast side of Big Snowy Mountains.

Source: US geologic names lexicon (USGS Bull. 1200, p. 592).


Map showing publication footprint
  • Usage in publication:
    • Cameron Creek member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Central Montana uplift
Publication:

Willis, R.P., 1959, Upper Mississippian-Lower Pennsylvanian stratigraphy of central Montana and Williston basin: American Association of Petroleum Geologists Bulletin, v. 43, no. 8, p. 1940-1966. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Pg. 1942 (fig. 2), 1952-1953. Cameron Creek member of Tyler formation. Rank reduced to member status in Tyler formation. Overlies unnamed lower member; underlies Alaska Bench member of Amsden formation. Includes Bear Gulch tongue. Age is Early Pennsylvanian (Morrow).

Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 592).


Map showing publication footprint
  • Usage in publication:
    • Cameron Creek Member*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Central Montana uplift
    • Powder River basin
Publication:

Maughan, E.K., and Roberts, A.E., 1967, Big Snowy and Amsden Groups and the Mississippian-Pennsylvanian boundary in Montana, IN Shorter contributions to general geology, 1966: U.S. Geological Survey Professional Paper, 554-B, p. B1-B27. [Available online from the USGS PubsWarehouse: http://pubs.er.usgs.gov/pubs/pp/pp554B]


Summary:

B3 (fig. 1), B7-B9, B12, pls. Cameron Creek Member of Tyler Formation of Amsden Group. Gardner's (1959) Cameron Creek reduced to member rank and made upper member of Tyler Formation; = Willis' (1959) Cameron Creek Member of Tyler Formation and beds 5-17 of Easton's (1962) Cameron Creek Formation. Mostly red beds, 83 feet thick. Overlies Stonehouse Canyon Member of Tyler Formation; underlies Alaska Bench Limestone of Amsden Group. Fossiliferous. Age changed from Mississippian or Pennsylvanian --to-- Early Pennsylvanian (Morrow).
Reference section (Tyler Formation): along prominent cliff forming the west end of Alaska Bench (locally called Beacon Hill), in NE/4 SW/4 sec. 25 and SW/4 sec. 36, T. 13 N., R. 19 E., and extending into NE/4 sec. 1, T. 12 N., R. 19 E. [unsurveyed], [Half Moon Canyon 7.5-min quadrangle (1970; 1973 ed.)], Fergus Co., central MT.

Source: Publication; Changes in stratigraphic nomenclature, 1969 (USGS Bull. 1324-A, p. A4).


Map showing publication footprint
  • Usage in publication:
    • Cameron Creek Member*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Central Montana uplift
    • Powder River basin
Publication:

Maughan, E.K., 1984, Paleogeographic setting of Pennsylvanian Tyler Formation and relation to underlying Mississippian rocks in Montana and North Dakota: American Association of Petroleum Geologists Bulletin, v. 68, no. 2, p. 178-195. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Pg. 180 (fig. 2), 183 (fig. 4), 185, 187-190. Cameron Creek Member of Tyler Formation of Amsden Group. Recognized in Big Snowy Mountains, Fergus County, central Montana, and in western North Dakota. Mostly red mudstone, a few thin to medium beds of limestone and dolomitic limestone, and lenticular or thin sandstone beds. Thickness up to 200 feet. Overlies and intertongues with Stonehouse Canyon Member of Tyler and underlies Alaska Bench Limestone of Amsden Group, with gradational contact. Fossiliferous. Age is Early Pennsylvanian (Morrowan).

Source: Publication.


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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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).