- Usage in publication:
-
- Arecibo formation
- Modifications:
-
- Original reference
- Dominant lithology:
-
- Shale
- Limestone
- Marl
- AAPG geologic province:
-
- Caribbean region
Summary:
Pg. 10-17. Arecibo formation. Includes San Sebastian shales, Ponce chalky limestones, Juana Diaz marls, Guanica coral reefs, and Quebradillas reef limestones. Age is Tertiary.
[Named from exposures in region about Arecibo, northwestern Puerto Rico.]
Source: US geologic names lexicons (USGS Bull. 896, p. 69; supplemental information from USGS Bull. 1200, p. 130).
- Usage in publication:
-
- Arecibo formation
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Caribbean region
Summary:
Aguadilla limestone shown on correlation chart as subdivision of Arecibo formation. Overlies Lares limestone; underlies Quebradillas limestone. Age is Oligocene. [Maury (1919b) changed age to early Miocene.]
Source: GNU records (USGS DDS-6; Reston GNULEX).
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 ([ ]).