The geologic structure of northwest Georgia lacks the longitudinal regularity of that in east Tennessee, with which it is continuous. The main elements in this difference in structural style are the Rome and Coosa thrust faults and associated folds. Initially east-dipping, the Rome thrust plane has been folded near Rome, Georgia, where erosional reduction of the folds has resulted in a sinuous trace of the fault. Northeast of Hill City, the fault straightens and merges with the Beaver Valley thrust of east Tennessee.

Southeast of the sinuous trace of the Rome, the Coosa fault trends northeast to Resaca, Georgia, overlapping the south-trending thrust formed by merging of the Saltville and Knoxville faults at Dalton. From Resaca, the Coosa trends northeastward toward Chatsworth along a topographic lineament, truncating the north end of a broad synclinal structure in which occurs the northwest-trending Folsom fault, the most prominent steep oblique fault known in this region. Northeast of the truncation of the syncline, the Coosa fault merges south of Chatsworth with the Camp Ground fault of the Dalton quadrangle, which has cut off the east limb of the Chatsworth syncline and is interpreted to merge with the Great Smoky fault of the Tennga quadrangle.

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