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Geochemistry of the porphyry-related intrusions of the Wasatch Mountains, Utah: implications for porphyry mineralization

Citation

Hollings, P and Smyk, E and Baker, M and Cooke, DR, Geochemistry of the porphyry-related intrusions of the Wasatch Mountains, Utah: implications for porphyry mineralization, Proceedings of the 14th SGA Biennial Meeting: Mineral Resources to Discover, 20-23 August 2017, Quebec City, Canada, pp. 299-302. ISBN 9782981689801 (2017) [Refereed Conference Paper]


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Abstract

The central Wasatch Mountains of Utah are host to a number of mineralized intrusions including the White Pine Fork and Park Premier porphyry deposits. The older intrusions to the west have been interpreted to have been emplaced at greater depths than those to the east. Recent advances in geochronology and new geochemical data show that the western stocks evolved to more felsic compositions with higher degrees of crustal contamination over time, whereas the eastern stocks show no significant variations. The greater contamination in the western stocks is consistent with magma ponding at greater depths, whereas the shallower emplacement depths of the eastern porphyries can account for the reduced contamination. The lack of pronounced geochemical evolution trends seen in other well-endowed porphyry districts, where they are explained by tectonic perturbations, may account for the small size of the deposits in the Wasatch Mountains.

Item Details

Item Type:Refereed Conference Paper
Keywords:porphyry, copper, igneous geochemistry, radiogenic isotopes
Research Division:Earth Sciences
Research Group:Geology
Research Field:Ore Deposit Petrology
Objective Division:Mineral Resources (excl. Energy Resources)
Objective Group:Mineral Exploration
Objective Field:Copper Ore Exploration
Author:Baker, M (Dr Michael Baker)
Author:Cooke, DR (Professor David Cooke)
ID Code:122938
Year Published:2017
Deposited By:CODES ARC
Deposited On:2017-12-06
Last Modified:2017-12-07
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