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Geologic Unit: Camuy
Map showing publication footprint
  • Usage in publication:
    • Camuy Formation*
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
    • Marl
    • Chalk
    • Sandstone
  • AAPG geologic province:
    • Caribbean region
Publication:

Monroe, W.H., 1963, Geology of the Camuy quadrangle, Puerto Rico: U.S. Geological Survey Geologic Quadrangle Map, GQ-197, 1 sheet, scale 1:20,000


Summary:

Named for town of Camuy, PR. Consists of limestone, marl, sandy chalk, and sandstone. In Camuy quad, divided into three members, but they are not readily traceable beyond quad borders. Estimated thickness about 200 m. Disconformably overlies Aymamon Limestone; underlies Pleistocene deposits. Age is Miocene.

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


Map showing publication footprint
  • Usage in publication:
    • Camuy Formation*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Caribbean region
Publication:

Krushensky, R.K., 2001, Geologic map of Puerto Rico with correlation chart and map unit descriptions, IN Bawiec, W.J., and others, Geology, geochemistry, geophysics, mineral ccurrences, and mineral resource assessment for the Commonwealth of Puerto Rico: U.S. Geological Survey Open-File Report, OF-98-38, scale 1:100,000


Summary:

The Camuy Formation occurs on the north coast of Puerto Rico and consists of foraminiferal biomicrite with clay lenses, ferruginous calcarenite interbedded with chalky breccia, and in the upper part, chalky sandstone, sandstone, sandy limestone, and limestone. Maximum estimated thickness is 170 meters. The age of the Camuy is changed to late Miocene and early Pliocene.

Source: 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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