TY - RPRT TI - Sea-floor massive sulfide deposits from 21 degrees N East Pacific Rise, Juan de Fuca Ridge, and Galapagos Rift; bulk chemical composition and economic implications AU - James L. Bischoff AU - R.J. Rosenbauer AU - P. J. Aruscavage AU - P. A. Baedecker AU - J.G. Crock PY - 1983 DO - 10.2113/gsecongeo.78.8.1711 UR - https://pubs.usgs.gov/publication/70011203 ID - 70011203 ER -