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Figure 1. Shaded-relief and simplified geologic map (modified from Stewart and Carlson, 1978) of north-central Nevada showing the location of the geophysically inferred crustal feature in north-central Nevada (rift crustal feature [R-CF]). Lines and symbols: Yellow diamonds—sediment-hosted gold deposits (Wallace et al., 2004a); red squares—pluton-related gold deposits (Wallace et al., 2004a); green circles—epithermal gold deposits (modified from John et al., 2000; Wallace et al., 2004a); NNRe, NNRc, and NNRw—apex of magnetic anomaly associated with the eastern, central, and western northern Nevada rifts; yellow lines—Battle Mountain–Eureka mineral trend (BMET) and Carlin (CAR) mineral trend; semi-transparent rectangle—extent of Battle Mountain–Eureka mineral trend deposits; black dashed line—Battle Mountain–Eureka belt (from Roberts, 1966); NV6—COCORP deep seismic-reflection profile (from Allmendinger et al., 1987); white lines—locations of geophysical models (A–F, see Watt et al., 2007); magenta line—initial ⁸⁷Sr/⁸⁶Sr = 0.7060 isopleth (from Tosdal et al., 2000); black square—Sawtooth dike; gray lines—major roads. Cities: BM—Battle Mountain; MCD—McDermitt; WIN—Winnemucca. Geography: BV—Boulder Valley; CAM—Clan Alpine Mountains; CM—Cortez Mountains; CV—Crescent Valley; DM—Diamond Mountains; EGR—Egan Range; ER—East Range; FCM—Fish Creek Mountains; GR—Grant Range; HR—Humboldt Range; IM—Independence Mountains; OM—Osgood Mountains; RM—Ruby Mountains; RRV—Reese River Valley; RbM—Roberts Mountains; SCH—Schell Creek Range; SCR—Sheep Creek Mountains; SHR—Sho-shone Range; SPM—Simpson Park Mountains; SRR—Santa Rosa Range; SSR—Sulfur Springs Range; TR—Toiyabe Range; TQR—Toquima Range.

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