Usage:
Harriman Shale Member of Lykins Formation (CO*)
Geologic age:
Permian*
Type section, locality, area and/or origin of name:
Jefferson Co., north-central CO, where typically developed and well exposed. Named from Harriman irrigation canal, [in sec. 1, T. 5 S., R. 70 W., and sec. 6, T. 5 S., R. 69 W., Morrison 7.5-min quadrangle, Jefferson Co.], which receives water from Bear Creek at town of Morrison (LeRoy, 1946).
AAPG geologic province:
Denver 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 ([ ]).