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Permanent link (DOI): https://doi.org/10.7939/R3ZG71

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Geochemistry and geochronology of the Precambrian Basement Domains in the Vicinity of Fort McMurray, Alberta: A Geothermal Perspective Open Access

Descriptions

Other title
Subject/Keyword
Taltson Magmatic Zone
Geothermal
Geochronology
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Walsh, Nathaniel J
Supervisor and department
Chacko, Thomas (Earth & Atmospheric Sciences)
Examining committee member and department
Heaman, Larry (Earth & Atmospheric Sciences)
Unsworth, Martyn (Physics)
Department
Department of Earth and Atmospheric Sciences
Specialization

Date accepted
2013-01-31T14:28:41Z
Graduation date
2013-06
Degree
Master of Science
Degree level
Master's
Abstract
The geochemistry and geochronology of the Precambrian basement in the vicinity of Fort McMurray was investigated to evaluate the feasibility of geothermal heat production. The basement is composed of older (1.95-1.98 Ga) and younger (1.92-1.94 Ga) granitoids suites of the Taltson Magmatic Zone that have intruded the 2.25 to 2.40 Ga gneisses and amphibolites of Taltson Basement Complex. Thermal conductivities (TC) calculated for 35 samples yielded an average of 3.1±0.43 W/m K. Average radiogenic heat production (RHP) of the same samples is 2.9±2.8 μW/m3. Geothermal modeling using these values indicates that at 5 km depth, a one standard deviation shift in TC changes temperature by only ~25 °C. However, a one standard deviation shift in RHP at the same depth changes temperature by ~70 °C. The feasibility of using geothermal heat in oil sands processing will depend on RHP values in the crustal column near oil sands processing site.
Language
English
DOI
doi:10.7939/R3ZG71
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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