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Map showing publication footprint
  • Usage in publication:
    • Birdhead sandstone member*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sandstone
  • AAPG geologic province:
    • Powder River basin
    • Central Montana uplift
Publication:

Thom, W.T., Jr., Hall, G.M., Wegemann, C.H., and Moulton, G.F., 1935, Geology of Big Horn County and the Crow Indian Reservation, Montana, with special reference to the water, coal, oil, and gas resources: U.S. Geological Survey Bulletin, 856, 200 p.


Summary:

Birdhead sandstone member of Thermopolis shale [of Colorado group]. Rim-forming sandstone 0 to 15 feet thick, lying about 130 feet above base of Thermopolis shale in Bighorn County and Crow Indian Reservation, Montana. Birdhead Coulee cuts across the sandstone in T. 3 S., R. 27 E., Yellowstone County, central southern Montana. Age is Late Cretaceous.

Source: US geologic names lexicon (USGS Bull. 896, p. 191).


Map showing publication footprint
  • Usage in publication:
    • Birdhead sandstone member*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Powder River basin
Publication:

Richards, P.W., 1955, Geology of the Bighorn Canyon-Hardin area, Montana and Wyoming: U.S. Geological Survey Bulletin, 1026, 93 p., (incl. geologic map, scale 1:62,500)


Summary:

Pg. 43. Birdhead sandstone member of Cloverly formation. Tentatively correlated with Newcastle sandstone of Black Hills and Powder River basin areas and Muddy sandstone of Bighorn basin and included in Thermopolis shale by Thom and others (1935), is top of Cloverly formation as herein described. Member is mostly fine-grained sandstone, in part silty and argillaceous. Commonly 10 to 15 feet thick. Not sharply set off from underlying beds; underlies zone of black shale with hard ironstone concretions, this shale is basal unit of Thermopolis shale. In some places a thin (few feet thick) unnamed sandstone and shale unit, assigned to uppermost Cloverly, occupies interval between Birdhead and Thermopolis. Age is Early Cretaceous. Report includes geologic map, columnar section, measured sections.

Source: US geologic names lexicon (USGS Bull. 1200, p. 347); supplemental information from GNU records (USGS DDS-6; Denver GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Birdhead Sandstone Member
  • Modifications:
    • Areal extent
    • Revised
  • AAPG geologic province:
    • Central Montana uplift
    • Powder River basin
Publication:

Wulf, G.R., 1962, Lower Cretaceous Albian rocks in northern Great Plains: American Association of Petroleum Geologists Bulletin, v. 46, no. 8, p. 1371-1415. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Revised the Birdhead Sandstone Member reassigned to the top of the Skull Creek Shale from central MT, [Central Montana uplift] to the eastern Bighorn Mountains of WY in the Powder River basin. described as a lenticular sandstone Is recognized in this report over a larger area than in previous studies. Overlies Skull Creek undivided. Disconformably underlies lower part of Mowry Shale. Correlative lenticular sandstone bodies are called: "J" sandstone in southeast WY; Newcastle Sandstone Member in the Black Hills, Williston basin, and northeastern Powder River basin; Muddy Sandstone at all these localities. Newcastle is restricted to the three areas listed above. The "J" and Muddy are not used in this area. Nomenclature chart. Cross sections. Of late Albian, Early Cretaceous age.

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


Map showing publication footprint
  • Usage in publication:
    • Birdhead Sandstone Member*†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Sweetgrass arch
Publication:

Rice, D.D., 1976, Revision of Cretaceous nomenclature of the northern Great Plains in Montana, North Dakota, and South Dakota, IN Cohee, G.V., and Wright, W.B., Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1975: U.S. Geological Survey Bulletin, 1422-A, p. A66-A67.


Summary:

Birdhead Sandstone Member of Cloverly Formation as used by Richards (1955, USGS Bull. 1026, USGS Bull. 1026, p. 42-45) in Bighorn Canyon-Hardin area, south-central Montana, abandoned. Rocks now included in Fall River Sandstone.

Source: Changes in stratigraphic nomenclature, 1975 (USGS Bull. 1422-A, p. A4-A5, A66-A67).


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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 ([ ]).