Usage:
No current usage.
(†Bevos Group (MO-recognized locally in St. Francois Mountains area) considered abandoned. Rocks have been included in /St. Francois Mountains Intrusive Suite (MO) for some time. See St. Francois Mountains.)
[Name St. Francois Mountains applied concurrently to two different units in same area (see ACSN, 1970; NACSN, 1983, 2005, 2021).]
Subunits:
[Subunits listed below are now included in /St. Francois Mountains Intrusive Suite.]
(alphabetical) --all in MO: Breadtray Granite, Brown Mountain Rhyolite Porphyry, Butler Hill Granite, Graniteville Granite, Knoblick Granite, Silvermine Granite.
Geologic age:
Precambrian
Type section, locality, area and/or origin of name:
Named from exposures on Bevos Mountain, in sec. 36, T. 34 N., R. 5 E., Madison Co., MO (Tolman and Robertson, 1969).
AAPG geologic province:
Midcontinent region
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 ([ ]).