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  • Usage in publication:
    • Clarendonian age
  • Modifications:
    • Original reference
  • AAPG geologic province:
    • Palo Duro basin
Publication:

Wood, H.E., II, Chaney, R.W., and and others, 1941, Nomenclature and correlation of the North American continental Tertiary: Geological Society of America Bulletin, v. 52, no. 1, 48 p.


Summary:

Pg. 12, pl. 1. Clarendonian age. Provincial time term, based on the Clarendon local fauna (and member?), near Clarendon, Donley County, Texas. Covers the interval between the Barstovian (Miocene) and Hemphillian (Pliocene) ages. [In lower part of Pliocene; = EUCASTOR faunal zone.] Report defines 18 provincial time terms, based on mammal-bearing units, for the North American continental Tertiary. [For sequence see under Puercan.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 817-818).


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 ([ ]).

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