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Brevard Fault Zone in its extent from Montgomery, Alabama to the North-Carolina-Virginia border. The Brevard Fault Zone is a 700-km [1] long and several km-wide thrust fault that extends from the North Carolina-Virginia border, runs through the north metro Atlanta area, and ends near Montgomery, Alabama.
The Piedmont is home to prominent features like Stone Mountain [5] and the Brevard fault zone, which runs parallel to the Chattahoochee River and bisects cities like Suwanee, Atlanta, Buford, and Duluth. The geological Piedmont includes metamorphic rocks of the Dadeville Complex, an Ordovican arc terrane that lay seaward of the North American ...
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. [3] 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. [4]
In Carroll County, where Acorn Creek flows into the path of the Chattahoochee river, the scar of the Brevard Fault is visible. [17] The fault is a geologic feature that spans several states. [ 17 ] [ 18 ] From Atlanta to eastern Alabama, an area which includes Acorn Creek, the rock units that characterize the fault outcrop in widths rarely ...
Visitors putting their rafts, canoes and kayaks in the Chattahoochee River. The source of the Chattahoochee River is located in Jacks Gap at the southeastern foot of Jacks Knob, in the very southeastern corner of Union County, [5] [6] in the southern Blue Ridge Mountains, a subrange of the Appalachian Mountains.
Flowery Branch is within the Brevard Fault zone. [ 12 ] Natural resources in the Flowery Branch area include: gray marble , [ 13 ] [ 14 ] marble , clay , granite , graphite , limestone , iron ore , manganese , pegmatite , mica , beryl , quartzite , zircon , lead , copper , silver , and gold as known by the local Gold Hill Mine and regional ...
It is finer grained and more foliated adjacent to the Brevard Fault zone and becomes coarser and less foliated towards the southeast. [7] [8] [9] Where radiometrically dated, the Henderson Gneiss yielded an Rb-Sr whole-rock age of 535+27 Ma and U-Pb zircon ages of 592 and 538 Ma.
Anna was the first person to identify that the Brevard Zone rocks depict a fault zone. Her proposed explanation was that the Zone marked a major thrust fault. Afterwards, contrary to Stose's theory, other geologists supposed that the Zone was actually the trace of a large strike-slip fault.