- Usage in publication:
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- Torrejonian age
- Modifications:
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- Original reference
- AAPG geologic province:
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- San Juan basin
Summary:
Pg. 9, pl. 1. Torrejonian age. Provincial time term, based on Torrejon formation of San Juan basin, New Mexico, type locality, the heads of Arroyo Torrejon. Covers interval between Paleocene Dragonian (older) and Tiffanian ages. [In middle part of Paleocene; = PANTOLAMBDA faunal zone.] Report defines 18 provincial time terms, based on mammal-bearing units, for North American continental Tertiary. [For sequence see under Puercan.]
Typical area: from [Arroyo Torrejon] northwest to Ojo Alamo, NM, with additional poorer localities scattered to the north almost to CO line.
Source: US geologic names lexicon (USGS Bull. 1200, p. 3929).
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 ([ ]).