Borden Group (INM1;0)

State	Indiana
Name	Borden Group
Geologic age	Mississippian
Original map label	M1
Comments	mostly siltstone; lenses of crinodial limestone in upper part. Much cherty and silty limestone and dolomite in northwest. NP, top of New Providence Shale
Primary rock type	siltstone
Secondary rock type	limestone
Other rock types	dolostone (dolomite); chert
Lithologic constituents	Major Sedimentary > Clastic > Siltstonemoslty siltstone; lenses of crinodial limestone in upper part. Much cherty and silty limestone and dolomite in northwest. NP, top of New Providence Shale Minor Sedimentary > Clastic > Mudstone > Shalemoslty siltstone; lenses of crinodial limestone in upper part. Much cherty and silty limestone and dolomite in northwest. NP, top of New Providence Shale Sedimentary > Carbonate > Limestonemoslty siltstone; lenses of crinodial limestone in upper part. Much cherty and silty limestone and dolomite in northwest. NP, top of New Providence Shale Sedimentary > Carbonate > Dolostonemoslty siltstone; lenses of crinodial limestone in upper part. Much cherty and silty limestone and dolomite in northwest. NP, top of New Providence Shale
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	Bartholomew - Benton - Boone - Brown - Carroll - Clark - Clinton - Floyd - Fountain - Harrison - Hendricks - Jackson - Jasper - Johnson - Lawrence - Marion - Monroe - Montgomery - Morgan - Newton - Owen - Parke - Putnam - Scott - Tippecanoe - Warren - Washington - White