Geological Survey Bulletin, Ausgabe 1500U.S. Department of the Interior, Geological Survey; Washington, D.C., 1949 |
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Häufige Begriffe und Wortgruppen
adit Adit-chip anomalous amounts anomalous values Assay data azurite Barney Ranch Bellota Ranch Bureau of Mines chip sample chrysocolla Clasts Colossal Cave conglomerate contained core rocks Cretaceous deposits detected disharmonic faults dolomite dump elements glide faults granitic rocks Granodiorite grid Happy Valley Horquilla Limestone inch-pound units Lechequilla Peak limestone malachite Mica Mtn MINERAL RESOURCES mineralized areas mineralized rock samples molybdenum Mountain Quartz Monzonite occur Oligocene oz silver oz/ton Paleozoic Pantano Formation percent copper Pima County Pinal Schist Pit-chip Pit-dump-grab Precambrian prospect pits quartz monzonite quartzite Rincon Mountains Rincon Peak Rincon study area Rincon wilderness study Roble Canyon Roble Spring Roble-Youtcy Canyon locale rock-chip samples sandstone schist sedimentary shale shear zone siltstone southeastern Arizona spectrographic analyses stream-sediment and mineralized stream-sediment samples structures thrust faults Tortolita Mountains trace of gold Tucson U.S. Bureau U.S. Geological Survey uranium wilderness study area Wrong Mountain Quartz Youtcy Ranch zinc