Rockwood Formation (TNSr;12)

State	Tennessee
Name	Rockwood Formation
Geologic age	Silurian
Original map label	Sr
Comments	East sheet
Primary rock type	shale
Secondary rock type	siltstone
Other rock types	sandstone
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shale Minor Sedimentary > Clastic > Sandstone Sedimentary > Clastic > Siltstone
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