Usage:
Basin Rhyolite (CO)
Geologic age:
Tertiary
Type section, locality, area and/or origin of name:
Notable exposures: caps central part of Basin Ridge and occupies center of Basin Ridge syncline, Park Co., central CO (Stark and others, 1949).
AAPG geologic province:
Denver basin
South Park basin
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 ([ ]).