Usage:
Cibao Formation of Rio Guatemala Group (PR*)
Subunits:
(alphabetical) --all in PR*: Almirante Sur Sand Lentil, Guajataca Member, Miranda Sand Member, Montebello Limestone Member, Quebrada Arenas Limestone Member, Rio Indio Limestone Member.
Geologic age:
Tertiary (late Oligocene to early Miocene)*
Type section, locality, area and/or origin of name:
Type locality: in Barrio Cibao, Municipio de Camuy north of Lares, [San Sebastian quadrangle], northwestern 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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).