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Map showing publication footprint
  • Usage in publication:
    • Santas Pascuas Member*
  • Modifications:
    • Named
  • Dominant lithology:
    • Tuff
    • Lava
    • Limestone
Publication:

Krushensky, R.D., and Monroe, W.H., 1978, Geologic map of the Penuelas and Punta Cuchara quadrangles, Puerto Rico: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1042, 1 sheet, scale 1:20,000


Summary:

The upper member of the Lago Garzas Formation is here named the Santas Pascuas Member. Consists of pumiceous lapilli tuff, vitric and vitric crystal tuff, lava, and minor limestone. Interbedded with the top of the underlying Pastillo Member and with the overlying Yauco Formation. Thickness is at least 350 m. Age is Late Cretaceous (Campanian(?) and Maastrichtian).

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


Map showing publication footprint
  • Usage in publication:
    • Santas Pascuas†
  • Modifications:
    • Abandoned
Publication:

Krushensky, R.D., and Curet, A.F., 1984, Geologic map of the Monte Guilarte quadrangle, Puerto Rico: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1556, 1 sheet, scale 1:20,000


Summary:

Interbedded lithofacies of the Anon and Lago Garzas are not given separate formation names. Therefore the Santas Pascuas Member of the Lago Garzas is abandoned and considered to be a lithofacies of the Anon. The Mal Paso and Palma Escrita Formations are abandoned and are considered to be interbedded facies of the Anon and Lago Garzas.

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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