Chattahoochee Formation (FLMIch;0)

Chattahoochee Formation - The Chattahoochee Formation, originally named by Dall and Stanley-Brown (1894), is predominantly a yellowish gray, poorly to moderately indurated, fine-grained, often fossiliferous (molds and casts), silty to finely sandy dolostone (Huddlestun, 1988). Siliciclastic beds and limestones may be present. The Chattahoochee Formation is exposed in Jackson County, central panhandle, on the Chattahoochee "Anticline". It grades laterally across the Gulf Trough into the St. Marks Formation through a broad transition area (Scott, 1986). The Chattahoochee Formation forms the upper part of the FAS in the central panhandle.

State	Florida
Name	Chattahoochee Formation
Geologic age	Miocene
Original map label	Tch
Primary rock type	dolostone (dolomite)
Secondary rock type	sandstone
Other rock types	siltstone; limestone
Lithologic constituents	Major Sedimentary > Clastic > Siltstone (Bed)The Chattahoochee Formation, originally named by Dall and Stanley-Brown (1894), is predominantly a yellowish gray, poorly to moderately indurated, fine-grained, often fossiliferous (molds and casts), silty to finely sandy dolostone (Huddlestun, 1988). Siliciclastic beds and limestones may be present. Sedimentary > Clastic > Sandstone (Bed)The Chattahoochee Formation, originally named by Dall and Stanley-Brown (1894), is predominantly a yellowish gray, poorly to moderately indurated, fine-grained, often fossiliferous (molds and casts), silty to finely sandy dolostone (Huddlestun, 1988). Siliciclastic beds and limestones may be present. Sedimentary > Carbonate > Dolostone (Bed)The Chattahoochee Formation, originally named by Dall and Stanley-Brown (1894), is predominantly a yellowish gray, poorly to moderately indurated, fine-grained, often fossiliferous (molds and casts), silty to finely sandy dolostone (Huddlestun, 1988). Siliciclastic beds and limestones may be present. Minor Sedimentary > Carbonate > Limestone (Bed)The Chattahoochee Formation, originally named by Dall and Stanley-Brown (1894), is predominantly a yellowish gray, poorly to moderately indurated, fine-grained, often fossiliferous (molds and casts), silty to finely sandy dolostone (Huddlestun, 1988). Siliciclastic beds and limestones may be present.
Map references	Scott, T. M., Campbell, K. M., Rupert, F. R., Arthur, J. D., Missimer, T. M., Lloyd, J. M., Yon, J. W., and Duncan, J. G., 2001, Geologic Map of the State of Florida, Florida Geological Survey & Florida Department of Environmental Protection, Map Series 146.
Unit references	Scott, T. M., Campbell, K. M., Rupert, F. R., Arthur, J. D., Missimer, T. M., Lloyd, J. M., Yon, J. W., and Duncan, J. G., 2001, Geologic Map of the State of Florida, Florida Geological Survey & Florida Department of Environmental Protection, Map Series 146. Scott, Thomas M. P.G. #99, Text to Accompany the Geologic Map of Florida, Open-file Report 80, Florida Geological Survey, 2001. Huddlestun, P. F., 1988, A revision of the lithostratigraphic units of the Coastal Plain of Georgia - The Miocene: Georgia Geological Survey Bulletin 104, 162 p. Dall, W.H. and Stanley-Brown, 1894, Cenozoic geology along the Apalachicola River: Geological Society of America Bulletin, v. 5, p.147-170. Scott, T. M., 1986, The lithostratigraphic relationships of the Chattahoochee, St. Marks and Torreya Formations, eastern Florida Panhandle: Florida Academy of Sciences, Abstract, Florida Scientist v. 49, supplement 1, p. 29.
Geographic coverage	Calhoun - Gadsden - Jackson - Liberty