| State | Kentucky |
|---|---|
| Name | Garrard Siltstone and Kope and Clays Ferry Formations, undivided |
| Geologic age | Ordovician |
| Lithologic constituents |
Major
Sedimentary > Carbonate > Limestonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 50% shale, 40% limestone, and 10% siltstone
Sedimentary > Clastic > Mudstone > Shalelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 50% shale, 40% limestone, and 10% siltstone
Minor
Sedimentary > Clastic > Siltstonelithologies and lithology percentages estimated from stratigraphic column on paper source map; collectively these units are about 50% shale, 40% limestone, and 10% siltstone
|
| Comments | in west-central Kentucky, collectively the thickness is 60-90 m; in north-central Kentucky, the thickness is 60-115 m; in northeastern Kentucky, the thickness is 23-145 m; in east-central Kentucky, the thickness is 35-100 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 | Anderson - Bath - Boone - Bourbon - Boyle - Bracken - Campbell - Carroll - Clark - Fayette - Fleming - Franklin - Gallatin - Garrard - Grant - Harrison - Henry - Jessamine - Kenton - Lincoln - Madison - Marion - Mason - Mercer - Montgomery - Nelson - Nicholas - Owen - Pendleton - Robertson - Scott - Shelby - Spencer - Trimble - Washington - Woodford |