Carbondale Formation (KYPAc;0)

State	Kentucky
Name	Carbondale Formation
Geologic age	Middle Pennsylvanian
Original map label	PAc
Comments	in western Kentucky, thickness ranges from 90-125 m
Primary rock type	siltstone
Secondary rock type	sandstone
Other rock types	shale; coal
Lithologic constituents	Major Sedimentary > Clastic > Siltstonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 30% sandstone, 40% siltstone, 10 % coal, and 20% shale Minor Sedimentary > Coallithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 30% sandstone, 40% siltstone, 10 % coal, and 20% shale Sedimentary > Clastic > Mudstone > Shalelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 30% sandstone, 40% siltstone, 10 % coal, and 20% shale Sedimentary > Clastic > Sandstonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 30% sandstone, 40% siltstone, 10 % coal, and 20% shale
Map references	Noger, M.C., compiler, 1988, Geologic map of Kentucky: sesquicenntennial edition of the Kentucky Geological Survey: U.S. Geological Survey and the Kentucky Geological Survey, scale 1:500,000.
Unit references	Noger, M.C., compiler, 1988, Geologic map of Kentucky: sesquicenntennial edition of the Kentucky Geological Survey: U.S. Geological Survey and the Kentucky Geological Survey, scale 1:500,000.
Geographic coverage	Butler - Daviess - Henderson - Hopkins - McLean - Muhlenberg - Ohio - Union - Webster