Usage:
Doe Run Formation (IL*,MO*)
Derby and Doe Run Formations, undifferentiated (MO*)
/Derby-Doerun Dolomite (usage of the MO Geol. Survey, 1979) (MO*)
/Derby-Doerun Dolomite of Elvins Group (MO)
/Derby-Doerun Dolomite of Knox Group (IL-notably in southern part)
/Derby-Doerun Member of Franconia Formation (IL)
(USGS follows mining company spelling of "Doe Run." MO Geol. Survey follows Buckley's (1909) spelling of "Doerun.")
[The use of a hyphen between undifferentiated formations is not considered proper notation (CSN, 1933).]
Geologic age:
Late Cambrian (Croixan; Millardan; Sunwaptan)*
Type section, locality, area and/or origin of name:
Most typical and best exposure in SE/4 SE/4 sec. 12, T. 36 N., R. 4 E., [just north of Elvins, Bonne Terre 15-min quadrangle], St. Francois Co., eastern MO. Named from Doe Run Lead Company, which owns the land upon which occurs the type section (Buckley, 1909).
AAPG geologic province:
Illinois basin*
Ozark uplift*
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 ([ ]).