Bromide Formation

Bromide Formation
Stratigraphic range: early Sandbian 461–458
TypeGeological formation
Unit ofSimpson Group
Sub-unitsMountain Lake Member, Pooleville Member
UnderliesViola Formation
OverliesTulip Creek Formation
Thickness71 meters (233 ft) Pooleville Member at type location.
Lithology
Primarylimestone
Otherlimestone interbedded with shale, and sandstone
Location
Coordinates34°00′N 97°00′W / 34.000°N 97.000°W / 34.000; -97.000
RegionCentral-South Oklahoma: Carter County, Johnston County, Murray County and Pontotoc County
CountryUnited States of America
Extentfrom Blount to Decorah
Type section
Named byUlrich, 1911

The Bromide Formation is a geological formation in Oklahoma, USA. It is well known for its diverse echinoderm and trilobite fossil fauna.