Stratigraphy and structure of the Antler Peak quadrangle, Humboldt and Lander Counties, Nevada

Abstract

PLATE 1. Stratigraphic sections of preLate Mississippian rocks in north-central Nevada. 2. Correlation chart of Paleozoic formations, north-central Nevada. 3. Map showing distribution of Paleozoic assemblages, north-central Nevada. 4. Geologic map of the Antler Peak quadrangle. 5. Aeromagnetic map of the Antler Peak quadrangle. 6. Structural map of the Antler Peak quadrangle. 7. Isometric diagram showing structural geology of the Antler Peak quadrangle.

Significance of the precambrian basement and late Cretaceous thrust nappes on the location of tertiary ore deposits in the Oquirrh Mountains, Utah

“…Regional-scale thrust faulting in the Wasatch Range during the Sevier orogeny is described by Baker and others (1949), Armstrong andOriel (1965), andArmstrong (1968b). A broader distribution of thrust faults in Utah is identified by Roberts, and others (1965), Roberts andCrittenden (1973), andBeutner (1977). The maps of the thrust belt in the Oquirrh Mountains by Tooker and Roberts (1998) show the merging of the five thrust plates, indicate the directions of their movement into the foreland, and demonstrates differences in the stratigraphy and structures of Paleozoic sedimentary rocks (Tooker, 1983).…”

“…During the early Paleozoic, well-sized, Geologic Setting of North-Central Utah 7 clean sedimentary materials were derived from the rising and eroding continental craton to the east. Later, during mid and upper Paleozoic time, sedimentary debris originating north of the Uinta trend in the Sublette Basin part of the miogeocline also began to include less well-sized, mixed source materials from the erosion of a rising Antler belt farther west, which was composed of oceanic-derived rocks (Roberts, 1964;Poole, 1974;and Wilson and Laule, 1979). The composition of the resulting sedimentary rocks in the Oquirrh and Sublette Basins varied during time as well as along the shelf, depending on their proximity to and the relative contributions of materials from contrasting sources of sedimentary materials (Tooker and Roberts, 1988).…”

“…Debris was shed into two basins separated by the uplifted Uinta trend, the Oquirrh Basin on the south and Sublette Basin on the north. Sediments were derived from the craton to the east, the Antler orogenic zone on the west (Roberts, 1964), and locally from uplifted parts of the trend itself. Thick accumulations of clastic calcareous quartzite, shale, limestone, and dolomite of Lower and Upper Paleozoic ages are now exposed in the Oquirrh Mountains, the result of thrust faults.…”

Geochemistry and geology of deep drill holes at Iron Canyon, Lander County, Nevada

“…The Copper Canyon area has been overridden primarily by three successive thrust plates (Roberts, 1964): (1) (Sayers and others, 1968). Ore also occurs along fractures in the underlying Harmony Formation.…”

Stratigraphic sequence of Paleozoic and Mesozoic rocks exposed in central Elko County, Nevada

“…The The Strathearn Formation is exposed in the southern Adobe Range near its type section (Dott, 1955) Limestone (Roberts, 1964) and the Etchart Limestone (Hotz and Willden, 1964). …”