Usage:
Anon Formation (PR*)
Geologic age:
Late Cretaceous to early Tertiary (Maestrichtian? to Eocene)*
Type section, locality, area and/or origin of name:
Type locality: on Camino Anon, Route 511, at km post 9.0 and below the road in the bed of Rio Inabon (Puerto Rico Meter Grid System 137,185 E.; 30,840 N.), Ponce quadrangle, southern Puerto Rico. Named from Hacienda Anon on the Rio Inabon, 1.65 km northeast of Cerro Santo Domingo (Pessagno, 1960).
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 ([ ]).