Correlation of tuff layers in the Green River Formation, Utah, using biotite compositions

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Publication Type thesis
School or College College of Mines & Earth Sciences
Department Geology & Geophysics
Author Yen, Fu-su
Title Correlation of tuff layers in the Green River Formation, Utah, using biotite compositions
Date 1974
Description Concentrations of Mn, Ni, Cr, Fe, Mg, and Ti in biotites from 28 samples of tuffs from the Green River Formation of Utah, have been used in this study as correlation tools. Tuffs are commonly used as strati- graphic correlation marker beds in the Green River Formation of Utah. Previous studies by Desborough and others (1973) have shown that some major elements, FeO, MgO, and Ti02 in biotites in Green River Formation tuffs provide a satisfactory geochemical test of stratigraphic correla­tions. Comparisons of various element ratios using F tests, Tucky tests, diagrammatic tests, and discriminant analyses using density functions show that the three ratios Mn/Fe+Kg, Mn/Ti, and FeO/MgO are the most easily determined and useful ratios for tuff correlations. These ratios can be demonstrated to provide a better means of discriminating individual tuff layers than the FeO/MgO and Ti02 method of Desborough and others (1973).
Type Text
Publisher University of Utah
Subject Volcanic ash; Tuff; Utah; Green River Formation; Mica; Thesis and dissertation georeferencing project
Dissertation Institution University of Utah
Dissertation Name MS
Language eng
Relation is Version of Digital reproduction of "Correlation of tuff layers in the Green River Formation, Utah, using biotite compositions," J. Willard Marriott Library Special Collections, QE3.5 1974 .Y4
Rights Management In the public domain use of this file is allowed in accordance with the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License, http://creativecommons.org/licenses/by-nc-nd/3.0/us
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Format Extent 2,256,521 bytes
Identifier us-etd2,205905
Source Original: University of Utah J. Willard Marriott Library Special Collections
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ARK ark:/87278/s6k64zkk
Setname ir_etd
Date Created 2012-04-23
Date Modified 2012-11-06
ID 192599
Reference URL https://collections.lib.utah.edu/ark:/87278/s6k64zkk
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