Mattoon Formation (INPA5;0)

State	Indiana
Name	Mattoon Formation
Geologic age	Pennsylvanian
Original map label	P5
Primary rock type	shale
Secondary rock type	sandstone
Other rock types	coal
Lithologic constituents	Major Sedimentary > Clastic > Sandstone Sedimentary > Clastic > Mudstone > Shale Incidental Sedimentary > Coal
Map references	Gray, Henry H., Ault, Curtis, H., and Keller, Stanley, J., 1987, Bedrock geologic map of Indiana: Dept. of Natural Resources, Indiana Geological Survey, Miscellaneous Map 48, scale = 1:500,000
Unit references	Gray, Henry H., Ault, Curtis, H., and Keller, Stanley, J., 1987, Bedrock geologic map of Indiana: Dept. of Natural Resources, Indiana Geological Survey, Miscellaneous Map 48, scale = 1:500,000
Geographic coverage	Gibson - Posey - Sullivan