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Supplemental material: Identification of quartz and carbonate minerals across northern Nevada using ASTER thermal infrared emissivity data–Implications for geologic mapping and mineral resource investigations in well-studied and frontier areas

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posted on 2008-02-01, 00:00 authored by Barnaby W. Rockwell, Albert H. Hofstra
Geosphere, February 2008, v. 4, p. 218-246, doi:10.1130/GES00126.1, Figure 12 - A full resolution version of Figure 12. Subset of Plate 3 over the Bald Mountain and Alligator Ridge districts, White Pine County (M, Fig. 6). Quartz-bearing units are indicated in magenta, carbonate-bearing units in blue, and jasperoids in orange (Crafford, 2007). Mdp—Diamond Peak Formation. Dd—Devonian Guilmette Formation limestone (labeled Devils Gate Formation in Crafford, 2007). Dn—Devonian Nevada Formation (mainly dolomite), Simonson Dolomite, and/or Sevy Dolomite. DOd—Devonian–Ordovician dolomites, undivided. Pc—Riepe Spring and Ely Limestones, undivided. Oe—Ordovician Eureka Quartzite, Ordovician Pogonip Group (silty limestone ∓ sandstone), and/or Cambrian Windfall Formation (limestone with local interbedded chert and clastics). Bald Mountain district: BT—Bida trend; MB—Mooney Basin; Ji—Jurassic stock; SS1—sandstone beds and/or lenses of Pogonip Group on Big Bald Mountain; SS2—Permian Rib Hill Sandstone; J1—possible jasperoid in Pilot Shale along Mooney Basin trend; J2—quartz in argillized Pilot Shale and Chainman Shale, southeast of Top Pit area (T); W—Winrock deposit, jasperoid in Joana Limestone, Mjj of Nutt and Hofstra (2004) (Fig. 4); G—Galaxy deposit; H—Horseshoe deposit; S—Saga deposit; JB—jasperoid breccia (see text for explanation) from Crafford (2007). The Horseshoe and Galaxy deposits have been significantly disturbed by mining. Alligator Ridge district: V—Vantage deposit; Y—Yankee deposit; J3—possible jasperoids in locally argillized Joana Limestone, Pilot Shale, and Guilmette Formation. ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) emissivity spectra of several of the units and features in this figure are shown in Figures 4 and 5. File size is 0.6 MB.