Bulletin . , general statement, 63-67. origin of, greenstone, composition, , statement. description, description, phase, , rocks, slate, schist, quartz porphyry, , greenstone, mine, , 34, 52-53, 59. and soil. Aaron slate, 27. Hyco quartz por-phyry, mine, 146-147. GEOLOGIC MAP OF THE VIEGILINA DISTRICT O

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Bulletin . , general statement, 63-67. origin of, greenstone, composition, , statement. description, description, phase, , rocks, slate, schist, quartz porphyry, , greenstone, mine, , 34, 52-53, 59. and soil. Aaron slate, 27. Hyco quartz por-phyry, mine, 146-147. GEOLOGIC MAP OF THE VIEGILINA DISTRICT OF VIRGINIA AND NORTH CAROLINA TRAVERSE BY GEOLOGY BY FRANCIS B. LANEY R. L. HARRISONJ. M. HARRIST. F. SLAlGHTERO. F. R. .lACKSONE. M. WAYLAND1>. D. NOONAN TRAVEKSE WORK DONE IN COOPERATION WITH THE V. S. GEOLOGICAL SURVEY 1917 THIS MAPPREPARED JOINTLY BY THE VIRGINIA GEOLOGICAL SURVEY THOMAS L. WATSON, STATE GEOLOOISTAND THE NORTH CAROLINA GEOLOGICAL AND ECONOMIC SURVEY JOSEPH HYDE PRATT, STATE GEOLOGIST.

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