Cotter and Jefferson City Dolomites

Cotter and Jefferson City Dolomites
State Arkansas
Name Cotter and Jefferson City Dolomites
Geologic age Early Ordovician
Lithologic constituents
Sedimentary > Carbonate > Dolostone (Bed)
Sedimentary > Chemical > Chert (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
Comments Cotter Dolomite-oolitic dolomite with thin beds of sandstone and shale (500 ft.), Jefferson City Dolomite-dolomite with some chert (400 ft.). Approximatly 900 ft. maximum thickness.

Caplan, W.M., 1960, Subsurface geology of pre-Everton rocks in northern Arkansas: Information Circular - State of Arkansas, Arkansas Geological and Conservation Commission, 17 pp.

NGMDB product
Counties Baxter - Benton - Boone - Carroll - Fulton - Izard - Lawrence - Madison - Marion - Randolph - Sharp