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Fort Payne Formation and Chattanooga Shale

Fort Payne Formation - Bedded chert; calcareous and dolomitic silicastone; minor limestone and shale; scattered lenses of crinoidal limestone. Thin green shale (Maury) at base. Average thickness about 250 feet (475 in Wells Creek area); and Chattanooga Shale - Black carbonaceous shale, fissile. Thickness 0 to 70 feet; average about 20 feet. (Mapped as MDc on East-Central and East sheets)
StateTennessee
NameFort Payne Formation and Chattanooga Shale
Geologic ageMississippian
Original map labelMfp
CommentsWest-Central sheet
Primary rock typechert
Secondary rock typesiltstone
Other rock typeslimestone; shale; black shale
Lithologic constituents
Major
Sedimentary > Chemical > Chert
Minor
Sedimentary > Clastic > Siltstone (Calcareous)
Incidental
Sedimentary > Clastic > Mudstone > Shale > Black-shale
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Carbonate > Limestonecrinoidal limestone
Map references
Geology available at Tennesse Spatial Data Server which can be found at http://www.tngis.org/geology.html which links to a USGS Water Resources Division site: http://water.usgs.gov/lookup/getspatial?geo250k Tennessee Spatial Data Server site notes: Thanks goes to Jim Julian for researching this improved geology layer from the Tennessee Division of Geology. **Note** - The Tennessee Division of Geology does not endorse this coverage, stating this version is still incomplete and not fit for distribution.
Unit references
Geology available at Tennesse Spatial Data Server which can be found at http://www.tngis.org/geology.html which links to a USGS Water Resources Division site: http://water.usgs.gov/lookup/getspatial?geo250k Tennessee Spatial Data Server site notes: Thanks goes to Jim Julian for researching this improved geology layer from the Tennessee Division of Geology. **Note** - The Tennessee Division of Geology does not endorse this coverage, stating this version is still incomplete and not fit for distribution.
Hardeman, W.D., and others, 1966, Geologic map of Tennessee: Division of Geology, Tennessee Department of Environment and Conservation, scale 1:250,000

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