Usage:
Rio Descalabrado Formation of Jacaguas Group (PR*)
Geologic age:
early Tertiary (middle Eocene)*
Type section, locality, area and/or origin of name:
Type area: west and north of village of Las Ollas (Hodge, 1920).
Type locality: outcrops along Rio Descalabrado, between Cerro de Las Cuevas and Canas Arriba fault about 1.0 km to the south, Rio Descalabrado quadrangle, Puerto Rico (Glover and Mattson, 1967).
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).