Bulletin of the United States Geological Survey

alaskite alluvium antimony antimony anomalies arsenic basaltic andesite flows carbonate rocks chert colluvium Cortez fault Cortez gold Cortez quadrangle Cortez silver deposits Elliott Eureka Counties exploration target GEOLOGICAL SURVEY gold and silver Granitic igneous rocks granodiorite Harold Masursky igneous bodies Individual high values jasperoid localities showing high localities with high lower Mill Canyon lower plate carbonate map area Marranzino mercury mercury and arsenic Mill Canyon stock Mill Canyon tract mineralized zone moderately anomalous table molybdenum molybdenum are weakly Mount Tenabo Mountains thrust fault Nevada nine elements northwest-trending Oligocene Ordovician Paleozoic plate siliceous facies plate siliceous rocks porphyry quartz monzonite rhyolite Roberts Mountains thrust sample localities showing sedimentary rocks selected metals southern Cortez Mountains Southwest basaltic Stoiser strong anomalies tellurium Tertiary gravel tract contains tract pl U.S. Geol upper Fourmile Canyon upper Mill Canyon upper plate siliceous Uteana Vinini Formation Willow Creek zinc zone in Mill