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National Geologic Map Database

Geologic Unit: Rio Guatemala

Usage:

Rio Guatemala Group (PR*)


Subunits:

San Sebastian Formation, Lares Limestone, Cibao Formation, and Mucarabones Sand (PR*)


Geologic age:

Tertiary*
Oligocene, middle*
Oligocene, late*
Miocene, early*


Type section, locality, area and/or origin of name:

Type area: belt extending from near Moca in the west to near Bayamon in the east. Named from Rio Guatemala, north and west of San Sebastian, Aguadilla quadrangle, Puerto Rico (Zapp and others, 1948).


AAPG geologic province:

Caribbean region*


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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).