Geology at Tungsten, Nevada, emphasizing structural aspects
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Authors
Middlebrook, John
Issue Date
1957
Type
Thesis
Language
en_US
Keywords
geography , lithology , sediments , hornfels , igneous , silicified , tactite , mineralization , structure penecontemporaneous , intrusion , faulting , jointing , geologic history , limestone , tungsten , Pershing County, Nevada , geology , Nevada , Mackay Science Project
Alternative Title
Abstract
Contact-metamorphic deposits containing scheelite are found at Tungsten, Pershing County, Nevada. Upper Triassic limestone beds were replaced by emanations from granodiorite stocks, forming tactite deposits bearing tungsten. The tracing of all limestone beds to the contact would locate all possible deposits of tungsten. Tracing of the limestone necessitates a method of correlating the limestones displaced or partially exposed. Studies were made on limestone thin sections, heavy-minerals, specific gravities, and assays for CaO, MgO, insoluble, R20o, and on hornfels, in order to find a reliable method of correlation. The calcium percentage, apparently unique to each bed of limestone, seems to be a property that could be used for correlating displaced portions of the bed.
Description
Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain high a quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.
Citation
Publisher
University of Nevada, Reno
License
In Copyright(All Rights Reserved)