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Geologic Unit: Allison
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Map showing publication footprint
  • Usage in publication:
    • Allison barren member*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sandstone
    • Shale
    • Coal
  • AAPG geologic province:
    • San Juan basin
Publication:

Sears, J.D., 1925, Geology and coal resources of the Gallup-Zuni basin, New Mexico: U.S. Geological Survey Bulletin, 767, 53 p.


Summary:

Allison barren member of Mesaverde formation. Light-gray to white lenticular sandstone, light-gray clay shale, and thin irregular coal beds, but none of commercial importance. Thickness 800+ feet. Top member of Mesaverde formation in Gullup-Zuni basin. Overlies Gibson coal member of Mesaverde and unconformably underlies Tertiary deposits. Age is Late Cretaceous.
Well exposed near village of Allison, [in sec. 18, T. 15 N., R. 18 W.], Gallup-Zuni basin, McKinley Co., northwestern NM.

Source: US geologic names lexicon (USGS Bull. 896, p. 35); supplemental information from GNU records (USGS DDS-6; Denver GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Allison member*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • San Juan basin
Publication:

Beaumont, E.C., Dane, C.H., and Sears, J.D., 1956, Revised nomenclature of Mesaverde group in San Juan basin, New Mexico: American Association of Petroleum Geologists Bulletin, v. 40, no. 9, p. 2149-2162. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

In southern part of San Juan basin, Upper Cretaceous Allison member of Mesaverde formation reassigned to Menefee formation of Mesaverde group (raised in stratigraphic rank throughout San Juan basin). Overlies Cleary coal member (named in this report) of Menefee and underlies La Ventana tongue (revised) of Cliff House sandstone in the east and Cliff House sandstone in the west part of southern San Juan basin. Small geologic map. Diagrammatic cross section.

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


Map showing publication footprint
  • Usage in publication:
    • Allison Member*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • San Juan basin
Publication:

Miller, R.L., 1984, Subdivisions of the Menefee Formation and Cliff House Sandstone (Upper Cretaceous) in southwest San Juan basin, New Mexico, IN Stratigraphic notes, 1983: U.S. Geological Survey Bulletin, 1537-A, p. A29-A53.


Summary:

As a member of Upper Cretaceous Menefee Formation of Mesaverde Group divided into: lower beds, Juans Lake Beds (named), and La Vida Beds (named) in west-central San Juan Basin. Two measured sections described.

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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