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Mineral Resources > Online Spatial Data > Geology > by state > Tennessee Geology

Geologic units in Scott county, Tennessee

[Additional scientific data in this geographic area]

Rockcastle Sandstone Member of Lee Formation (Pennsylvanian) at surface, covers 0.1 % of this area

Rockcastle Sandstone Member of Lee Formation

Lithology: sandstone; conglomerate

Indian Bluff Formation (Pennsylvanian) at surface, covers 11 % of this area

Indian Bluff Formation - Shale, sandstone, siltstone, and thin coal beds; from Pioneer Sandstone Member to Jellico coal. Thickness 150 to 250 feet.

Lithology: shale; sandstone; siltstone; coal

Rockcastle Conglomerate (Pennsylvanian) at surface, covers 12 % of this area

Rockcastle Conglomerate - Conglomeratic sandstone and sandstone, gray to brown, fine- to coarse-grained. Thin coal-bearing shale locally present near middle. Thickness 150 to 220 feet.

Lithology: conglomerate; sandstone; shale; coal

Pennington Formation (Mississippian) at surface, covers 2 % of this area

Pennington Formation - Highly variegated clay shale, distinctive; contains siltstone and locally gray, fine-grained sandstone. Thickness 400 to 700 feet.

Lithology: shale; siltstone; sandstone

Alluvium (Pleistocene to Holocene) at surface, covers < 0.1 % of this area

Alluvium; includes glacial deposits along the Ohio River and its tributaries west of Cannelton locks

Lithology: sand; silt; glacial drift

Fentress Formation (Pennsylvanian) at surface, covers 3 % of this area

Fentress Formation - Mostly dark-gray to light-brown shale, with minor siltstone and sandstone. Wilder coal near middle. Laterally equivalent to entire Gizzard Group and all of Crab Orchard Mountains Group below Rockcastle Conglomerate. Thickness as much as 340 feet.

Lithology: shale; siltstone; sandstone; coal

Breathitt Formation, lower part (Pennsylvanian) at surface, covers 0.7 % of this area

Breathitt Formation, lower part; lower part which includes Livingston Conglomerate Member of Lee Formation in eastern Rockcastle County

Lithology: shale; siltstone; sandstone; coal; conglomerate

Crooked Fork Group (Pennsylvanian) at surface, covers 27 % of this area

Crooked Fork Group - Shale, sandstone, siltstone, and thin coal beds; from top down group includes Poplar Creek coal, Wartburg Sandstone, Glenmary Shale, Coalfield Sandstone, Burnt Mill Shale, Crossville Sandstone, and Dorton Shale. Thickness 200 to 450 feet.

Lithology: sandstone; shale; siltstone; coal

Redoak Mountain Formation (Pennsylvanian) at surface, covers 5 % of this area

Redoak Mountain Formation - Shale, sandstone, siltstone, and several important coals; from Pewee coal to Windrock coal. Thickness 340 to 420 feet.

Lithology: shale; sandstone; siltstone; coal

Vowell Mountain Formation (Pennsylvanian) at surface, covers 1 % of this area

Vowell Mountain Formation - Shale, sandstone, siltstone, and coal; from Frozen Head Sandstone Member to Pewee coal. Thickness 300 to 375 feet.

Lithology: shale; sandstone; siltstone; coal

Graves Gap Formation (Pennsylvanian) at surface, covers 7 % of this area

Graves Gap Formation - Shale, sandstone, siltstone, and coal; from Windrock coal to top of Pioneer Sandstone. Thickness 200 to 350 feet.

Lithology: shale; sandstone; siltstone; coal

Cross Mountain Formation (Pennsylvanian) at surface, covers 0.2 % of this area

Cross Mountain Formation - Mostly shale, interbedded with sandstone, siltstone, and thin coal beds; base at top of Frozen Head Sandstone. Maximum preserved thickness 270 feet.

Lithology: shale; sandstone; siltstone; coal

Crab Orchard Mountains Group (Pennsylvanian) at surface, covers 0.4 % of this area

Crab Orchard Mountains Group - Only the lowest formation of the group, the Sewanee Conglomerate, is preserved in the area of this sheet. Sewanee is gray to brown, medium- to coarse-grained conglomeratic sandstone, with a thin zone of ferruginous quartz- and shale-pebble conglomerate at base. Maximum preserved thickness 35 feet.

Lithology: conglomerate; sandstone

Corbin Sandstone Member of Lee Formation (Pennsylvanian) at surface, covers < 0.1 % of this area

Corbin Sandstone Member of Lee Formation

Lithology: sandstone; conglomerate

Gizzard Group including Warren Point Sandstone and Raccoon Mountain Formation (Pennsylvanian) at surface, covers < 0.1 % of this area

Gizzard Group - Sandstone, conglomeratic sandstone, siltstone, shale, and minor coal. Thickness 100 to 200 feet. Includes Warren Point Sandstone - Gray to brown sandstone and minor conglomeratic sandstone. Thickness 60 to 160 feet; Raccoon Mountain Formation - Siltstone, sandstone, shale, and minor coal. Thickness 0 to 65 feet.

Lithology: sandstone; shale; siltstone; coal

Slatestone Formation (Pennsylvanian) at surface, covers 30 % of this area

Slatestone Formation - Shale, sandstone, siltstone, and several important coals; from Jellico coal to Poplar Creek coal. Thickness 500 to 650 feet.

Lithology: shale; sandstone; siltstone; coal

Pennington Formation (Paragon Formation), Bangor Limestone, Hartselle Formation, and Kidder Limestone Member of Monteagle Limestone, undivided (Mississippian) at surface, covers < 0.1 % of this area

Pennington Formation (Paragon Formation), Bangor Limestone, Hartselle Formation, and Kidder Limestone Member of Monteagle Limestone, undivided

Lithology: limestone; shale; sandstone