Previous work_________________________________ Present investigation.___________________________ Subdivisions of the basement rocks._______________ Basement rocks of the Mountain City window. _ Plutonic complex of Pardee Point and Buck Ridge _______________________________ Granitic rocks south of Pond and Little Pond Mountains____________________ Basement rocks of the Iron Mountains. _______ Basement rocks southeast of the Mountain City window.____________________________ General features and terminology._______ Complex of Lunsford Branch area______ Migmatite of Watauga River area______ Chloritized quartz diorite of Roan Creek area_ ______________________________ Character of the quartz diorite-_____ Pegmatite and granitic patches._____ Effects of shearing._________________ Gneisses of Forge Creek area. ___________ Amphibolite of Snake and Rich Mountains-Interpretation of structures of the basement rocks. _ General features.___________________________ Structures of Precambrian age______________ Structures probably of early or middle Paleozoic age._________ _________-__.__-_-__.___ Structures of late Paleozoic age. _____________ Faults and mylonite_____.______________ Folds..._______________________________ Cleavage and other small-scale structures __ Mineral alteration______________________ Stratified rocks._-___-____--_-______-_--_-_---______ General character of rock formations.____-___..___ Precambrian rocks._-_-_-__-__-________-____-___ Mount Rogers volcanic group (Upper Precambrian) _______________________________ Volcanic rocks________________________ Sedimentary rocks ______________________ Thickness and stratigraphic relations______ Age.
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