Explained by T.L. Klein
On the delineation of permissive tracts
Low-grade metamorphosed volcanic rocks in three areas, the Lincolnton-McCormick area of southern South Carolina, the Kings Mountain belt along the North and South Carolina border, and the area underlain by rocks of the Albemarle Group in the western part of the Carolina slate belt in central North Carolina are included in the permissive tract. In North Carolina, one of the three component areas contain two major districts (Cid, Gold Hill). Several base- and precious-metal mines thought to be kuroko deposits (Barite Hill, Dorn), as well as barite and kyanite occurrences, in the Lincolnton-McCormick district of South Carolina and Georgia and the Kings Mountain belt, also indicate that these areas are permissive for kuroko massive sulfide deposits.
On the numerical estimates made
For the 90th, 50th, and 10th percentiles, respectively, the team estimated 3, 7, and 12 undiscovered deposits consistent with the Phanerozoic kuroko model (Mark3 index 104) are present in the three districts that make up the tract.
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