Usage:
Renova Formation of Bozeman Group (MT*)
Renova Formation (MT)
Subunits:
(alphabetical) --all in MT: Bone Basin Member, Dunbar Creek Member*, Passamari Member.
Geologic age:
Eocene, late
Uintan, late or Duchesnean to Miocene, early
Arikareean, late
Tertiary
Oligocene*
Oligocene, early
Chadronian
Oligocene, middle
Orellan
Type section, locality, area and/or origin of name:
Type section: 1.25 mi southeast of village of Renova, along west-facing bluffs on east side of Jefferson River, from NW/4 NW/4 sec. 33, T. 1 N., R. 4 W. to SW/4 NW/4 sec. 28, T. 1 N., R. 4 W., Madison Co., MT. Named from Renova (Kuenzi and Fields, 1971).
Principal reference sections: (1) Pipestone Springs, in NW/4 NW/4 sec. 29, T. 2 N., R. 5 W., Jefferson Co., MT; (2) East Lily, in S/2 sec. 16, T. 2 N., R. 5 W., Jefferson Co., MT; and (3) Lower Parrot Bench, in secs. 23, 26, and 27, T. 1 N., R. 4 W., Madison Co., MT (Kuenzi and Fields, 1971).
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 ([ ]).