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Geologic Unit: Escudo
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  • Usage in publication:
    • Escudo sandstone
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sandstone
  • AAPG geologic province:
    • San Joaquin basin
Publication:

Van Couvering, Martin, and Allen, H.B., 1943, Devils Den oil field [California], IN Jenkins, O.P., and others, Geologic formations and economic development of the oil and gas fields of California; in four parts, including outline geologic map showing oil and gas fields and drilled areas: California Division of Mines Bulletin, no. 118, pt. 3, p. 496-501.


Summary:

Pg. 496-500. Escudo sandstone. Poorly sorted buff calcareous fossiliferous sandstone. Maximum thickness 150 feet. Underlies Alferitz formation (new); unconformably overlies Hannah formation (new). Age is middle Miocene (Relizian).
[Type lcoality not stated.] Occurs in Devils Den oil field district, northwestern Kern Co., adjacent to Kings Co. line, about 40 mi east of Paso Robles and about 60 mi northeast of Bakersfield, central CA.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1281).


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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