State | Kentucky |
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Name | Breathitt Formation, lower part |
Geologic age | Pennsylvanian |
Lithologic constituents |
Major
Sedimentary > Clastic > Siltstonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 45% shale, 40% siltstone, 15% sandstone, and <5% coal and conglomerate
Sedimentary > Clastic > Mudstone > Shalelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 45% shale, 40% siltstone, 15% sandstone, and <5% coal and conglomerate
Minor
Sedimentary > Clastic > Sandstonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 45% shale, 40% siltstone, 15% sandstone and <5% coal and conglomerate
Incidental
Sedimentary > Clastic > Conglomeratelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 45% shale, 40% siltstone, 15% sandstone, and <5% coal and conglomerate
Sedimentary > Coallithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 45% shale, 40% siltstone, 15% sandstone, and <5% coal and conglomerate
|
Comments | along and south of Pine Mountain; thickness is 625-800 m; in south-central Kentucky, thickness is at least 500+ m; in northeastern Kentucky, thickness is 50-300+ m; in east-central Kentucky, thickness is 225-415 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 - Breathitt - Carter - Clay - Clinton - Elliott - Estill - Floyd - Greenup - Harlan - Jackson - Johnson - Knott - Knox - Laurel - Lawrence - Lee - Leslie - Letcher - Lewis - McCreary - Madison - Magoffin - Martin - Menifee - Montgomery - Morgan - Owsley - Perry - Pike - Powell - Pulaski - Rockcastle - Rowan - Wayne - Whitley - Wolfe |