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

Hollings, P, Smyk, E, Baker, M ORCID: 0000-0002-8050-7631 and Cooke, DR ORCID: 0000-0003-3096-5658 2017 , 'Geochemistry of the porphyry-related intrusions of the Wasatch Mountains, Utah: implications for porphyry mineralization', in Proceedings of the 14th SGA Biennial Meeting: Mineral Resources to Discover , Society for Geology Applied to Mineral Deposits, pp. 299-302 .

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Official URL: http://sga2017.ca/

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 Type: Conference Publication
Authors/Creators:Hollings, P and Smyk, E and Baker, M and Cooke, DR
Keywords: porphyry, copper, igneous geochemistry, radiogenic isotopes
Journal or Publication Title: Proceedings of the 14th SGA Biennial Meeting: Mineral Resources to Discover
Publisher: Society for Geology Applied to Mineral Deposits
Copyright Information:

Copyright 2017 SGA

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