... of thrusts at the time of formation of said fold. The data may be summarized as follows: (1) four generations of Winnemucca-age folds are recognized; all are west verging and show the same sense of asymmetry; (2) in succeeding generations, the apical angle of folds increases and axial planes change from...

... that significant tufa formation may not occur in lowstand lake systems with chemistry similar to modern Pyramid Lake, despite the increased concentration of Ca 2+ and HCO 3 – ions from evaporation. Whereas tufa in the Winnemucca basin is generally associated with regional groundwater influx, mixing-zone...

...” in Nevada. At its base, clastic rocks of the Grossman Formation are overlain by a fining-upward sequence of the Meramecian Banner Formation. Limestone at the top of the Banner Formation is overlain by basaltic lava, tuff, and minor limestone of the Nelson Formation. The Nelson Formation is, in turn...

... turbidites and related deposits dated as Norian. Analysis of fabric elements of the shelf rocks indicates that early deformation was west verging, affirming an affinity to the predominantly west-verging Winnemucca fold and thrust belt. Autochthonous or para-autochthonous shelf rocks consist of deltaic...

... Lake Winnemucca in Nevada and to Santa Rosa Island off the California coast. Who would pay? He would cover all my expenses. Although he didn’t say it, he clearly wanted free radiocarbon dates at a time when it was difficult to even purchase them. I was to be his ticket. I accepted, and the next day...

... of Ordovician age, the nearest exposure of which is in the north end of the Sonoma Range east of Winnemucca, and light-to dark-colored, well sorted, clean quartzite and dark chert present in a unit mapped as the Leach formation in the East Range (R. J. Roberts, personal communication). Either of these units may...

.... As no similar rocks are known on the east, south, or west, it is suggested that the source area was north or northwest of Winnemucca. In the other localities, the Harmony formation rests on thrust plates whose structures are sharply discordant with the structures of adjacent plates. In Battle Mountain...

... (1970) . In the inset map, the thin red line is the Truckee River–Pyramid Lake drainage basin boundary. T—Lake Tahoe, P—Pyramid Lake, W—Winnemucca Dry Lake, BD and N—locations of the Below Derby and Nixon stream gauges, respectively. Glancy et al. (1972) further documented terrace formation...

... (unit 4b, see following discussion). (3) A very well developed soil profile is preserved in the fan alluvium exposed in the upper part of the trench. This soil is formed on the current slope and thus postdates initial formation of the fault scarp and abandonment of the fan surface; the soil profile...

... of 108 overlapping scenes. These mineral maps were mosaicked into a single coverage that was overlain with published, vector-format geologic maps of various scales to determine which geologic terranes, formations, and geomorphic features correspond to identified quartz or carbonate. Where quartz...

... geologic history in Nevada using tectonic domains derived from the newly interpreted digital geologic map of Nevada ( Crafford, 2007 ). The new map provides detailed descriptions of how each local rock unit or formation was grouped into a regional geologic unit. This paper attempts to group those regional...

... speculate that at least some of the Winnemucca deformation belt faults might have slipped during the Early Cretaceous and caused uplift of Paleozoic rocks in the source area for the Quartzite-Chert Member of the King Lear Formation. Coarse conglomerate, sandstone, and mudstone interbedded with sparse...

... from ca. 15.7 Ma to ca. 7.0 Ma, potentially providing a significant source for the felsic ash and pumiceous air-fall deposits found in both the Miocene undifferentiated unit described in the previous section, and the Kool Spring formation described in the following section. The Cenozoic...

... areas. The Candelaria, Tobin, China Mountain, and Dixie Valley formations of western Nevada and the Moenkopi, Dinwoody, and Thaynes formations of Utah and Idaho can be correlated with the eastern Great Basin Triassic. Early Triassic seas invaded the northeastern Great Basin from Idaho and transgressed...

... to the number of C samples from a locality or formation gives its F:C ratio. The F:C ratio for recent dune sand is relatively high; that for modern beach sand intermediate; and for the sandstone formations lowest of all three. The F:C ratio data indicate that the last environment of deposition of the four...

... characterization program has been completed for the Hycroft Mine located in Humboldt County, Nevada, c. 95 km west of Winnemucca and c. 70 km NE of Gerlach ( Fig. 1 ). The Hycroft Mine is an open pit gold and silver mine located in northwestern Nevada in an area known as the ‘Sulphur District’. The site...

... P1 deformation events. (B) Shaded relief map of central Nevada and adjacent states, showing the localities mentioned in the text. Digital relief map after Muehlberger (1992) . Late Paleozoic deformation was recognized at Edna Mountain, 50 km east of Winnemucca, Nevada, in the 1970s; the most...

... water line (GMWL), whereas the saline waters plot well to the right ( Cameron and Leybourne, 2005 ). Formation waters recovered from deep sedimentary basins are different from meteoric waters, both in their higher salinity and the deviation in δ 2 H and δ 18 O values from the GMWL. The saline...

... by having to replace only one card instead of an entire page; it is possible to obtain a printout of the cards in any desired format; and the data can be easily analyzed statistically with the aid of a computer. This catalog was prepared by reproducing (and reducing) the IBM printout by photo offset. Each...