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SMITHVILLE DOLOMITE, POWELL DOLOMITE, COTTER DOLOMITE, JEFFERSON CITY DOLOMITE

SMITHVILLE DOLOMITE, POWELL DOLOMITE, COTTER DOLOMITE, JEFFERSON CITY DOLOMITE - fine crystalline, silty, cherty dolomite, and oolitic chert with local sandstone beds
State Missouri
Name SMITHVILLE DOLOMITE, POWELL DOLOMITE, COTTER DOLOMITE, JEFFERSON CITY DOLOMITE
Geologic age Phanerozoic | Paleozoic | Ordovician-Early [Ibexian]
Comments IN SOUTHEAST MO-Smithville Dolomite- (150 ft. max) cherty dolomite; Powell Dolomite- (175 ft. max) dolomite with thin beds of sandstone and shale; Cotter Dolomite- (459 ft. max) oolitic dolomite with thin beds of sandstone and shale; Jefferson City Dolomite- (350 ft. max) dolomite with lens of conglomerate and shale. Jefferson City Dolomite is host to barite deposits on the northwest flank of Ozark Uplift.
Primary rock type dolostone (dolomite)
Secondary rock type sandstone
Other rock types shale; conglomerate; chert
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)
Minor
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Clastic > Conglomerate (Lense)
Sedimentary > Chemical > Chert (Bed)
Map references
Middendorf, M. A., and others, 2003, Geologic Map of Missouri: Missouri Geological Survey. Scale 1:500K
Unit references
Howe, W. B. and Koenig, 1961, The Stratigraphic Succession in Missouri: Missouri Geological Survey and Water Resources, Vol XL. 2nd Series.
Counties Barry - Benton - Bollinger - Boone - Callaway - Camden - Cape Girardeau - Carter - Cedar - Christian - Cooper - Crawford - Dade - Dallas - Dent - Douglas - Franklin - Gasconade - Greene - Hickory - Howell - Jefferson - Laclede - Lawrence - McDonald - Maries - Miller - Moniteau - Montgomery - Morgan - Oregon - Osage - Ozark - Perry - Pettis - Phelps - Polk - Pulaski - Ripley - Saint Charles - Saint Clair - Sainte Genevieve - Scott - Shannon - Stoddard - Stone - Taney - Texas - Warren - Wayne - Webster - Wright