TY - RPRT TI - Metamorphic origin of ore-forming fluids for orogenic gold-bearing quartz vein systems in the North American Cordillera: constraints from a reconnaissance study of δ 15 N, δD, and δ 18 O AU - Y. Jia AU - R. Kerrich AU - R. Goldfarb PY - 2003 UR - https://pubs.usgs.gov/publication/70026110 ID - 70026110 ER -