Meramec Series (IAMm;0)

Ste. Genevieve Limestone- fossiliferous limestone and red and green shale. Approx. thickness 50 ft. St. Louis Limestone- limestone and dolomite, sandstone locally perdominant; locally contains chert. Spergen Formation- sandy micaceous dolomite.

State	Iowa
Name	Meramec Series
Geologic age	Phanerozoic \| Paleozoic \| Carboniferous Mississippian-Late
Original map label	Mm
Comments	Approx. total thickness 150 ft.
Primary rock type	limestone
Secondary rock type	dolostone (dolomite)
Other rock types	shale; sandstone; chert
Lithologic constituents	Major Sedimentary > Carbonate > Dolostone (Bed) Sedimentary > Carbonate > Limestone (Bed) Minor Sedimentary > Clastic > Sandstone (Bed) Sedimentary > Clastic > Mudstone > Shale (Bed) Incidental Sedimentary > Chemical > Chert (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	Boone - Calhoun - Dallas - Davis - Des Moines - Hamilton - Hardin - Henry - Humboldt - Iowa - Jasper - Jefferson - Keokuk - Lee - Louisa - Mahaska - Marion - Marshall - Monroe - Pocahontas - Poweshiek - Sac - Story - Van Buren - Wapello - Washington - Webster - Wright