Usage:
Guaracanal Andesite (PR*)
Guaracanal Formation (PR*)
Geologic age:
Late Cretaceous to early Tertiary (Paleocene)*
Type section, locality, area and/or origin of name:
Type section: exposures along Highway 1 and on adjacent hillsides between Cerro Magueyes and the alluviated valley north of La Muda (Puerto Rico Meter Grid System 188,140 E.; 56,320 N. to 187,760 E.; 55,360 N.). Named from Quebrada Guaracanal, Aguas Buenas quadrangle, Puerto Rico (Pease, 1968).
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 ([ ]).