Bromide Formation

Bromide Formation
Stratigraphic range: early Sandbian 461–458 Myo
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TypeGeological formation
Unit ofSimpson Group
Sub-unitsMountain Lake Member, Pooleville Member
UnderliesViola Formation[1]
OverliesTulip Creek Formation[2]
Thickness71 meters (233 ft) Pooleville Member at type location.[3]
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[4]
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.[1]

  1. ^ a b Carlucci J.R. and S.R. Westrop. Sequence Stratigraphy and Facies Architecture of the Bromide Formation (Upper Ordovician; Sandbian) of Oklahoma. 2009 Portland Geological Society of America Annual Meeting. Paper No. 36-5.
  2. ^ Jones, R.H. The Middle-Upper Ordovician Simpson Group of the Permian Basin: Deposition, Diagenesis, and Reservoir Development [1]
  3. ^ Fay, O. and A.A. Graffham. Biostratigraphic and paleontological studies. Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 30-33 (1982)
  4. ^ Loeblich, A.R. jr. Bryozoa from the Ordovician Bromide Formation Oklahoma. Journal of Paleontology, 16-4 (1942)[2]