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Permanent link (DOI): https://doi.org/10.7939/R3CB2G

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Geochronology and Trace Element Characteristics of Pyrite from Selected Carbonate Hosted Pb-Zn Ore Deposits Open Access

Descriptions

Other title
Subject/Keyword
Geochronology
MVT
Irish-type
Lisheen
Ore Deposits
Carbonate-hosted
Magnetic Susceptibility
Pb-Zn
Pyrite
Nanisivik
Galmoy
Re-Os
Hawker Creek
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Hnatyshin, Danny
Supervisor and department
Creaser, Robert (Earth and Atmospheric Sciences)
Examining committee member and department
Kravchinsky, Vadim (Physics)
Sarah Gleeson (Earth and Atmospheric Sciences)
Department
Department of Earth and Atmospheric Sciences
Specialization

Date accepted
2012-08-10T14:31:21Z
Graduation date
2012-11
Degree
Master of Science
Degree level
Master's
Abstract
Carbonate-hosted ore deposits, such as Mississippi Valley-type (MVT), and Irish-type deposits, are a major class of Pb-Zn ores. Due to the mineralogy of these deposits, numerical constraints on the timing of mineralization are few. This thesis investigates pyrite Re-Os geochronology for dating of ore formation, supplemented by a study of trace elements in pyrite. The two major deposits studied are the Lisheen deposit from Ireland, and the Nanisivik deposit from Nunavut. At Lisheen, different models of formation have been proposed, based upon ore formation ages of either ~ 345 Ma or ~ 280 Ma. The new Re-Os data show that Lisheen formed between 340 - 355 Ma in a primarily syngenetic/syndiagenetic fashion, and discount the significant of a ~ 280 Ma paleomagnetic age as a primary ore-forming event. The Re-Os pyrite geochronology from Nanisivik confirms it is a rare example of a Precambrian MVT deposit, forming at approximately 1100 Ma.
Language
English
DOI
doi:10.7939/R3CB2G
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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