Usage:
Anaconda Conglomerate (MT*)
Anaconda Formation (MT*)
Geologic age:
early Tertiary (Eocene)*
Type section, locality, area and/or origin of name:
Type locality: patchy exposures extending from townsite of Anaconda westward to townsite of West Valley, [in T. 4 and 5 N., R. 11 W.], Anaconda North and West Valley 7.5-min quadrangles, Deer Lodge Co., southwestern MT. Named from townsite of Anaconda (O'Neill, 2005).
AAPG geologic province:
Montana folded belt*
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 ([ ]).