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Geologic Unit: Marin
Map showing publication footprint
  • Usage in publication:
    • Marin sandstone*
  • Modifications:
    • Principal reference
  • Dominant lithology:
    • Sandstone
  • AAPG geologic province:
    • California Coast Ranges province
Publication:

Lawson, A.C., 1914, San Francisco folio, California, Tamalpais, San Francisco, Concord, San Mateo, and Hayward quadrangles: U.S. Geological Survey Geologic Atlas of the United States Folio, GF-193, 24 p., scale 1:62,500


Summary:

Marin sandstone. Massive dark-gray sandstone, obscurely stratified. Thickness 1,000 feet. Underlies Ingleside chert and overlies Sausalito chert. Included in Franciscan group. Age is Jurassic(?).
Named from occurrence on Marin Peninsula, San Francisco region, Marin Co., western CA.

Source: US geologic names lexicon (USGS Bull. 896, p. 1300); supplemental information from GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Marin Sandstone†
    • Marin Sandstone Member†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • California Coast Ranges province
Publication:

Schlocker, Julius, 1974, Geology of the San Francisco North quadrangle, California: U.S. Geological Survey Professional Paper, 782, 109 p., (incl. geologic maps, scale 1:24,000) [http://ngmdb.usgs.gov/Prodesc/proddesc_19768.htm]


Summary:

Marin Sandstone of Franciscan Group of Lawson (1914), later Marin Sandstone Member of Franciscan Formation, is abandoned because writer was unable to use beds as stratigraphic markers in Franciscan. Franciscan is Jurassic and Cretaceous age based in part on ammonite DOUVILLEICERAS sp. found in Marin Sandstone (Schlocker and others, 1954).

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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