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Geologic Unit: Guzman
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Map showing publication footprint
  • Usage in publication:
    • Guzman Formation
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Caribbean region
Publication:

Seiders, V.M., 1971, Cretaceous and lower Tertiary stratigraphy of the Gurabo and El Yunque quadrangles, Puerto Rico, IN Contributions to stratigraphy, 1969: U.S. Geological Survey Bulletin, 1294-F, p. F1-F58.


Summary:

In the Gurabo and El Yunque quadrangles the Hato Puerco Tuff is redefined Formation and beds assigned to the Guzman Formation by Meyerhoff and Smith (1931) are here included in the Hato Puerco. The stratigraphic position of the Hato Puerco is also revised. Overlies the Tabonuco Formation or the Barrazas Formation; conformably underlies the Cambalache Formation. Age is Late Cretaceous (early Cenomanian to Turonian) based on rudistids.

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


Map showing publication footprint
  • Usage in publication:
    • Guzman†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Caribbean region
Publication:

Briggs, R.P., 1973, The Lower Cretaceous Figuera Lava and Fajardo Formation in the stratigraphy of northeastern Puerto Rico, IN Contributions to stratigraphy: U.S. Geological Survey Bulletin, 1372-G, p. G1-G10.


Summary:

The Guzman Formation is here abandoned.

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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