The Tar Creek Member is here named the upper member of the Clarkston Formation of the Atlanta group in the area from East Point to Palmetto, GA, in the northwest limb of the Newnan-Tucker synform. It consists of purple-pink weathering muscovite schist and ocher-weathering amphibolite, like the Clarkston, undivided. Overlies the Fairburn Member of the Clarkston; underlies the Camp Creek Formation with sharp and conformable contact. Intruded by the Union City Complex and Palmetto Granite. Thickness is 400 to 1,500 m. Age is Late Proterozoic and (or) early Paleozoic.
Source: GNU records (USGS DDS-6; Reston GNULEX).
The Tar Creek Member of the Clarkston Formation is here abandoned because it is identical with the Clarkston Formation, undivided.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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