Cedar Valley Limestone (IADcv;0)

Finely crystalline and clastic limestone in upper part with coral and stromatoporoid-rich zones; brown, dolomitic limestone with biostromes of corals and stromatoporoids in middle part; gray argillaceous, fossiliferous limestone in lower part; dominantly dolomite with intervals of gypsum in the subsurface of central and southwestern Iowa.

State	Iowa
Name	Cedar Valley Limestone
Geologic age	Phanerozoic \| Paleozoic \| Devonian-Middle
Original map label	Dcv
Comments	Approx thickness 500 ft
Primary rock type	limestone
Secondary rock type	dolostone (dolomite)
Other rock types
Lithologic constituents	Major Sedimentary > Carbonate > Dolostone (Bed) Sedimentary > Carbonate > Limestone (Bed)
Map references	Hershey H. G. 1969, Geologic Map of Iowa: Iowa Geological Survey, scale 1:500K
Unit references	Hershey H. G. 1969, Geologic Map of Iowa: Iowa Geological Survey, scale 1:500K
Geographic coverage	Benton - Black Hawk - Bremer - Buchanan - Butler - Cedar - Cerro Gordo - Chickasaw - Delaware - Des Moines - Emmet - Fayette - Floyd - Grundy - Hancock - Howard - Iowa - Jackson - Johnson - Kossuth - Linn - Louisa - Mitchell - Muscatine - Palo Alto - Scott - Tama - Winnebago - Winneshiek - Worth