The Inman Yard Formation, here named, consists of interlayered gneiss, schist, and granite gneiss. As the apparently oldest unit in the Atlanta Group in the Newnan-Tucker synform, the base is not exposed. Underlies the Norcross Gneiss with sharp and apparently conformable contact. Thickness is 700 m. Age is Late Proterozoic and (or) early Paleozoic.
Source: GNU records (USGS DDS-6; Reston GNULEX).
The Inman Yard Formation is abandoned because it is now known to be Clairmont melange and is part of the Clairmont Formation [now Clairmont Member of Stonewall Gneiss] in the Clairmont thrust sheet.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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