Lookout Sandstone; Gizzard Formation (GAPAlg;2)

State	Georgia
Name	Lookout Sandstone; Gizzard Formation
Geologic age	Pennsylvanian
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shale Sedimentary > Clastic > Sandstone Incidental Sedimentary > Coal
Comments	Ridge and Valley sedimentary rocks. Secondary unit description from USGS Geologic Names lexicon (ref. GA003): Unit is composed of argillaceous shale or fire clay, sandy shale, and sandstone with 10 to 70 ft of conglomerate at top. Thickness 50 to 600 ft. In thicker portions contains at least two coal seams. Basal formation of Coal Measures. Overlies Bangor limestone and underlies Walden sandstone. Equivalent to Millstone grit of Smith. Age is Pennsylvanian.
References	Lawton, D.E., Moye, F.J., Murray, J.B., O'Connor, B.J., Penley, H.M., Sandrock, G.S., Marsalis, W.E., Friddell, M.S., Hetrick, J.H., Huddlestun, P.F., Hunter, R.E., Mann, W.R., Martin, B.F., Pickering, S.M., Schneeberger, F.J., and Wilson, J.D., 1976, Geologic Map of Georgia, Georgia Dept. of Natural Resources, Geologic and Water Resources Division, Georgia Geological Survey. Scale 1:500,000. USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/ https://ngmdb.usgs.gov/Geolex/search
NGMDB product	NGMDB product page for 16532
Counties	Dade

State

Georgia

Name

Lookout Sandstone; Gizzard Formation

Geologic age

Pennsylvanian

Lithologic constituents

Major

Sedimentary > Clastic > Mudstone > Shale

Sedimentary > Clastic > Sandstone

Incidental

Sedimentary > Coal

Comments

Ridge and Valley sedimentary rocks. Secondary unit description from USGS Geologic Names lexicon (ref. GA003): Unit is composed of argillaceous shale or fire clay, sandy shale, and sandstone with 10 to 70 ft of conglomerate at top. Thickness 50 to 600 ft. In thicker portions contains at least two coal seams. Basal formation of Coal Measures. Overlies Bangor limestone and underlies Walden sandstone. Equivalent to Millstone grit of Smith. Age is Pennsylvanian.

References

Lawton, D.E., Moye, F.J., Murray, J.B., O'Connor, B.J., Penley, H.M., Sandrock, G.S., Marsalis, W.E., Friddell, M.S., Hetrick, J.H., Huddlestun, P.F., Hunter, R.E., Mann, W.R., Martin, B.F., Pickering, S.M., Schneeberger, F.J., and Wilson, J.D., 1976, Geologic Map of Georgia, Georgia Dept. of Natural Resources, Geologic and Water Resources Division, Georgia Geological Survey. Scale 1:500,000.

USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/

https://ngmdb.usgs.gov/Geolex/search

NGMDB product

NGMDB product page for 16532

Counties

Dade