- Usage in publication:
-
- Hemphillian age
- Modifications:
-
- Original reference
- AAPG geologic province:
-
- Anadarko basin
Summary:
Pg. 12, pl. 1. Hemphillian age. Provincial time term, based on Hemphill member of Ogallala, which includes both Hemphill local fauna from the Coffee Ranch Quarry and the Higgins local fauna, Hemphill County, Texas. Covers interval between the Oligocene Clarendonian (older) and Blancan ages. [In middle part of Pliocene; = DIPOIDES faunal zone.] Report defines 18 provincial time terms, based on mammal-bearing units, for North American continental Tertiary. [For sequence see under Puercan.]
Source: US geologic names lexicon (USGS Bull. 1200, p. 1731).
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 ([ ]).