High Bridge Group (KYOhb;0)

State	Kentucky
Name	High Bridge Group
Geologic age	Ordovician
Original map label	Ohb
Comments	in west-central Kentucky, the thickness is at least 20+ m; in east-central Kentucky, the thickness is at least 120+ m
Primary rock type	limestone
Secondary rock type	shale
Other rock types	dolostone (dolomite)
Lithologic constituents	Major Sedimentary > Carbonate > Limestonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 90% limestone, 5% dolostone (dolomite) and 5% shale Incidental Sedimentary > Clastic > Mudstone > Shalelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 90% limestone, 5% dolostone (dolomite) and 5% shale Sedimentary > Carbonate > Dolostonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 90% limestone, 5% dolostone (dolomite) and 5% 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	Anderson - Boyle - Clark - Fayette - Franklin - Garrard - Jessamine - Lincoln - Madison - Mercer - Woodford