Usage:
No current usage.
(Rocks of †Golden Member of /Arapahoe-Denver Formation (CO-recognized locally in Golden area) reallocated to Denver Formation. See Denver.)
[The assignment of a unit to 2 adjacent formations, in one vertical sequence, is considered informal nomenclature (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). The use of a hyphen between undifferentiated formations is not considered proper notation (see CSN, 1933, Art. 13a, p. 437-438). Where the formations have not been separated in the field, it is considered proper notation to add the word "and", "undifferentiated", "included", etc.; and list formations in order of age (youngest first).]
Geologic age:
early Tertiary (Paleocene)
Type section, locality, area and/or origin of name:
Type section: on eastern extremity of South Table Mountain, in NW/4 sec. 31, T. 3 S., R. 69 W., Morrison quadrangle, Jefferson Co., north-central CO. Recognized only on slopes of Table Mountains. [Named from town of Golden, Jefferson Co., CO.] (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 ([ ]).