Usage:
Bromide Formation of Simpson Group (OK*,TX)
Subunits:
(alphabetical): Mountain Lake Member (OK), Pooleville Member (OK).
Geologic age:
Late Ordovician (late Whiterockian to Mohawkian; late Chazyan to Turinian)*
Type section, locality, area and/or origin of name:
Type section: along old road on hill northwest of old Galbraith Hotel in town of Bromide, in sec. 32, T. 1 S., R. 8 E., Johnson Co., Arbuckle Mountains, southeastern OK. Section exposed as faulted inlier in upper Simpson.
AAPG geologic province:
South Oklahoma 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 ([ ]).