The Talladega series has been traced by the writer from Alabama, where it is typically exposed, across northwest Georgia, into North Carolina and Tennessee. The series occupies a belt, trending northeast, 300 miles in length and 1 to 25 miles in width. The belt is separated in most places from the fossiliferous rocks of the Appalachian Valley and Ridge province, which it borders, by a low-angle thrust fault, the Cartersville fault. To the southeast of the belt lie pre-Cambrian crystalline schists, which in Alabama and Georgia are faulted (Whitestone fault) against the Talladega rocks. Thus, a large part of the belt is a fault block bounded by low-angle faults, which, in general, strike northeast and dip southeast (Fig. 1).