Geologic map of Georgia

The geologic map of Georgia (a state within the United States) is a special-purpose map made to show geological features. Rock units or geologic strata are shown by colors or symbols to indicate where they are exposed at the surface. Structural features such as faults and shear zones are also shown. Since the first national geological map, in 1809, there have been numerous maps which included the geology of Georgia. The first Georgia specific geologic map was created in 1825. The most recent state-produced geologic map of Georgia, by the Georgia Department of Natural Resources is 1:500,000 scale, and was created in 1976 by the department's Georgia Geological Survey. It was generated from a base map produced by the United States Geological Survey. The state geologist and Director of the Geological Survey of Georgia was Sam M. Pickering, Jr. Since 1976, several geological maps of Georgia, featuring the state's five distinct geologic regions, have been produced by the federal government.

The first statewide geologic map of Georgia was published in 1825. It was a 1:1,000,000 scale map of Georgia and Alabama published by Henry Schenck Tanner. In 1849 W.T. Williams published the geological features for the state on a 1:120,000 scale map within George White’s (1849) Statistics of the State of Georgia report. Then in 1871, Dr. Matthew Fleming Stephenson published a 1:1,200,000 scale map of the Geology and mineralogy of Georgia through the Globe Publishing Company of Atlanta. This map was part of a report with the same name. Another statewide map of the geology of Georgia was published in 1876 by G. Little in the Handbook of the State of Georgia by T.P. Janes. In 1885 Georgia Commissioner of Agriculture J.T. Henderson produced a 1:2,500,000 scale map of the geology of Georgia. In 1895 R. T. Nesbitt produced a small-scale geological map of Georgia that was included in a statistical review of the state. The review was described as a Chamber of commerce styled work, that presented the economic mineral resources and geology of the state in a promotional and exaggerated manner. This was the last statewide geological map published in the 19th Century.

...
Wikipedia