No current usage?
(†San Diego Formation (PR) considered abandoned? Uncertain if used by Puerto Rico Geol. Survey. Not used by the USGS.)
Late Cretaceous
Present in Fajardo district, Fajardo quadrangle, Puerto Rico (Meyerhoff and Smith, 1931).
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 ([ ]).