UNDIFFERENTIATED (MOOu;0)

State	Missouri
Name	UNDIFFERENTIATED
Geologic age	Phanerozoic \| Paleozoic \| Ordovician
Original map label	Ou
Comments	Undifferentiated Ordovician Rocks-Predominantly dolomite and limestones and some important sandstone and shale units. Ordovician age rocks are exposed over approximately one-third of the state. The Canadian, Champlainian, and Cincinnatian Series all represented. The Canadian, Champlainian Series being the most extensive.
Primary rock type	dolostone (dolomite)
Secondary rock type	limestone
Other rock types	sandstone; shale
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shale (Bed) Sedimentary > Clastic > Sandstone (Bed) Sedimentary > Carbonate > Limestone (Bed) Sedimentary > Carbonate > Dolostone (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.
Geographic coverage	Bollinger - Callaway - Franklin - Montgomery - Saint Charles - Saline - Warren