Crooked Fork Group (TNPAcf;12)

State	Tennessee
Name	Crooked Fork Group
Geologic age	Pennsylvanian
Original map label	Pcf
Comments	East sheet
Primary rock type	sandstone
Secondary rock type	shale
Other rock types	siltstone; coal
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shale Sedimentary > Clastic > Sandstone Minor Sedimentary > Clastic > Siltstone Incidental Sedimentary > Coal
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. [http://www.tngis.org/geology.html] [http://water.usgs.gov/lookup/getspatial?geo250k]
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. [http://www.tngis.org/geology.html] [http://water.usgs.gov/lookup/getspatial?geo250k] Hardeman, W.D., and others, 1966, Geologic map of Tennessee: Division of Geology, Tennessee Department of Environment and Conservation, scale 1:250,000
Geographic coverage	Anderson - Campbell - Claiborne - Clay - Cumberland - Fentress - Morgan - Rhea - Roane - Scott