State | Kentucky |
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Name | Breathitt Formation, middle part |
Geologic age | Pennsylvanian |
Lithologic constituents |
Major
Sedimentary > Clastic > Sandstonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 40% sandstone, 35% shale, 15% siltstone, 10 % coal, and <5% limestone
Sedimentary > Clastic > Mudstone > Shalelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 40% sandstone, 35% shale, 15% siltstone, 10 % coal, and <5% limestone
Minor
Sedimentary > Clastic > Siltstonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 40% sandstone, 35% shale, 15% siltstone, 10 % coal, and <5% limestone
Sedimentary > Coallithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 40% sandstone, 35% shale, 15% siltstone, 10 % coal, and <5% limestone
Incidental
Sedimentary > Carbonate > Limestonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 40% sandstone, 35% shale, 15% siltstone, 10 % coal, and <5% limestone
|
Comments | along and south of Pine Mountain; thickness is at least 350+ m; in east-central Kentucky, thickness is 0-195 m; in northeastern Kentucky, thickness is 35-135 m; in south-central Kentucky, thickness ranges from at least 80-85+ m |
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. |
NGMDB product | |
Counties | Bell - Boyd - Breathitt - Carter - Clay - Elliott - Floyd - Garrard - Greenup - Harlan - Johnson - Knott - Knox - Lawrence - Leslie - Letcher - Lincoln - McCreary - Magoffin - Martin - Morgan - Owsley - Perry - Pike - Rockcastle - Whitley - Wolfe |