| Reference | {Deposit:: CURRIER, L.W., 1935, ZINC AND LEAD REGION OF SOUTHWESTERN VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 43, 122 P.}{Deposit:: RANKIN, D.W., ESPENSHADE, G.H., AND NEUMAN, R.B., 1972, GEOLOGIC MAP OF THE WEST HALF OF THE WINSTON-SALEM QUADRANGLE, NORTH CAROLINA, VIRGINIA AND TENNESSEE: U.S. GEOLOGICAL SURVEY MISCELLANEOUS GEOLOGIC INVESTIGATIONS MAP I-709-A, 1 SHEET, SCALE 1:250,000.}{Deposit:: 1972 OTHER R.B. NEUMAN: COMPILED MISC. GEOL. INV. MAP I-709-} |