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  • Usage in publication:
    • Grenloch Sand Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Sand
  • AAPG geologic province:
    • Atlantic Coast basin
Publication:

Isphording, W.C., 1970, Petrology, stratigraphy, and re-definition of the Kirkwood Formation (Miocene) of New Jersey: Journal of Sedimentary Petrology, v. 40, no. 3, p. 986-997. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

(See also Isphording and Lodding, 1968, Clays and Clay Minerals, v. 16, no. 3.) Grenloch Sand Member of Kirkwood Formation. Yellow and pink silty sands; lignitic at base. Thickness 15 m. Overlies, intertongues with, and grades laterally into Alloway Clay and Asbury Park Members of Kirkwood; underlies Cohansey Sand. Age is middle Miocene.
Type area: exposures in vicinity of Grenloch and Blackwood, Gloucester and Camden Cos., west-central NJ.

Source: US geologic names lexicon (USGS Bull. 1520, p. 124-125); supplemental information from GNU records (USGS DDS-6; Reston 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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