| 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 |
| Format Medium |
application/pdf |
| Format Extent |
2,256,521 bytes |
| Identifier |
us-etd2,205905 |
| Source |
Original: University of Utah J. Willard Marriott Library Special Collections |
| Conversion Specifications |
Original scanned on Epson GT-30000 as 400 dpi to pdf using ABBYY FineReader 9.0 Professional Edition. |
| ARK |
ark:/87278/s6k64zkk |
| Setname |
ir_etd |
| ID |
192599 |
| Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6k64zkk |
