Usage:
Martin Gonzalez Lava (PR*)
Martin Gonzalez Lava Member of Guaynabo Formation (PR*)
Geologic age:
Late Cretaceous (Santonian to Campanian)*
Type section, locality, area and/or origin of name:
Basalt quarry in Barrio Martin Gonzalez (Puerto Rico Meter Grid System 201,600 E.; 59,400 N. to 201,610 E.; 59,500 N.), northeast corner of Gurabo quadrangle, north-central 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 ([ ]).