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Study explores how rock expands near soil surface in Sierra Nevada（图）
rock expands soil surface Sierra Nevada
2019/10/18
A University of Wyoming researcher and his team have discovered that weathering of subsurface rock in the southern Sierra Nevada Mountains of California is due more to rocks expanding than to chemical...
Breccia of Frog Lakes:reconstructing Triassic volcanism and subduction initiation in the east-central Sierra Nevada, California
Subduction Initiation Sierran Magmatic Arc Saddlebag Lake Pendant,
2015/1/16
The Antler and Sonoma orogenies occurred along the southwest-trending passive Pacific margin of North America during the Paleozoic concluding with the accretion of the McCloud Arc. A southeast-trendin...
Influence of lithology on hillslope morphology and response to tectonic forcing in the northern Sierra Nevada of California
Influence of lithology hillslope morphology response to tectonic forcing the northern Sierra Nevada of California
2014/5/20
Many geomorphic studies assume that bedrock geology is not a first-order control on landscape form in order to isolate drivers of geomorphic change (e.g., climate or tectonics). Yet underlying geology...
Record of magma chamber processes preserved in accessory mineral assemblages, Aztec Wash pluton, Nevada
Record magma chamber processes preserved accessory mineral assemblages Aztec Wash pluton
2012/4/1
Field relations and geochemistry indicate that Aztec Wash pluton had a complex, open-system
history. The tilted pluton represents a 2.5 km thick chamber that was recharged with both felsic and
mafic...
Low-Temperature Alteration in Tuffs from Yucca Mountain, Nevada
Alteration Clays Coatings Glass Silica Smectite Tuff Weathering Yucca Mountain Zeolites
2011/12/2
Abstract: The structure, chemistry and distribution of hydrothermal alteration and weathering products of feldspars and glass in 3 samples of Yucca Mountain tuffs (GSW G4 borehole at a depth of 1531 f...
Equilibrium Modeling of Clinoptilolite-Analcime Equilibria at Yucca Mountain, Nevada, USA
Analcime Clinoptilolite Modeling Stability Thermodynamic Zeolite
2011/12/9
Abstract: Yucca Mountain, Nevada, is being investigated to determine its suitability to host a potential high-level radioactive waste respository. An important reason for its choice as a potential rep...
Paleogeothermal and Paleohydrologic Conditions in Silicic Tuff from Yucca Mountain, Nevada
Geothermal gradients Illite/smectite K/Ar dating X-ray powder diffraction Yucca Mountain
2011/12/29
The clay mineralogy of tuffs from Yucca Mountain, Nevada, the potential site of the nation's first high-level radioactive waste repository, has been studied in order to understand the alteration histo...
Detection of Trace Amounts of Erionite Using X-ray Powder Diffraction: Erionite in Tuffs of Yucca Mountain, Nevada, and Central Turkey
Clinoptilolite Detection limits Erionite Profile refinement X-ray powder diffraction Zeolitic tuffs
2012/1/4
Recent data in the biological literature suggest that the natural zeolite erionite may be more tumorigenic than asbestos minerals. Because of its potential biological importance, a technique has been ...
Origin of Magnesium Clays from the Amargosa Desert, Nevada
Dolomite Kerolite Mixed layer Precipitation Sepiolite Smectite Stevensite
2012/2/7
Deposits of sepiolite, trioctahedral smectite (mixed-layer kerolite/stevensite), calcite, and dolomite, found in the Amargosa Flat and Ash Meadows areas of the Amargosa Desert were formed by precipita...
Mixed-Layer Kerolite/Stevensite from the Amargosa Desert, Nevada
Hectorite Kerolite Layer charge Mixed layer Smectite Stevensite Talc
2012/2/7
Mixed-layer clays composed of randomly interstratified kerolite/stevensite occur as lake and/or spring deposits of probable Pliocene and Pleistocene age in the Amargosa Desert of southern Nevada, U.S....
Zeolite Diagenesis Below Pahute Mesa, Nevada Test Site
Analcime Clinoptilolite Closed hydrologic system Diagenesis K-feldspar Mordenite Zeolite
2012/2/8
The Tertiary silicic volcanic rocks in the Silent Canyon Caldera beneath Pahute Mesa, of the Department of Energy's Nevada Test Site have been divided into three vertical mineralogical zones that vary...
Woolly Erionite from the Reese River Zeolite Deposit, Lander County, Nevada, and its Relationship to Other Erionites
Authigenesis Erionite Fiber Tuff Zeolite
2012/2/8
Woolly erionite from the Reese River deposit, Nevada, is identical in appearance to that at the type locality, near Durkee, Oregon. Both of these erionites differ in appearance from all other erionite...
Zeolite Reactions in the Tuffaceous Sediments at Teels Marsh, Nevada
Analcime Diagenesis Gel Phillipsite Playa lake Volcanic ash Zeolites
2012/2/8
The most prominent authigenic reaction in Holocene tuffaceous sediments at Teels Marsh, Nevada, is the hydration of rhyolitic glass by interstitial brines and the subsequent formation of phillipsite. ...
Sepiolite Deposits of the Las Vegas, Nevada Area
Fibrous Magnesium Palygorskite Sepiolite
2011/11/18
Abstract: Four sepiolite deposits of different origin, which occur near Las Vegas, Nevada, are compared and described. They include a playa deposit, a valley terrace deposit, and two types of vein dep...
Argillization by Descending Acid at Steamboat Springs, Nevada
Argillization Acid Steamboat Springs
2011/11/18
Abstract: Steamboat Springs, Nevada, an area of present-day hot springs, clearly illustrates the genetic dependence of some kaolin deposits on hot-spring activity. Andesite, granodiorite and arkosic s...