Usage:
Fortune Formation (MO)
Geologic age:
Middle Devonian
Type section, locality, area and/or origin of name:
Type section: in NE/4 SW/4 SW/4 sec. 4, T. 23 N., R. 26 W., Barry Co., southwestern MO. Named from Fortune Branch. Formation restricted in its outcrops to eastern one-fourth of Cassville quadrangle and western one-fourth of Shell Knob quadrangle, an area of approx. 100 sq mi (Grohskopf and others, 1943).
AAPG geologic province:
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 ([ ]).