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The Tectonic Setting and Origin of Cretaceous Batholiths within the North American Cordillera

Product Code: USPE532
Series: GSA Special Papers
Author/Editor: Authors: Robert S. Hildebrand and Joseph B. Whalen
Publication Date: 03 October 2017
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In this Special Paper, Hildebrand and Whalen present a big-picture, paradigm-busting synthesis that examines the tectonic setting, temporal relations, and geochemistry of many plutons within Cretaceous batholithic terranes of the North American Cordillera. In addition to their compelling tectonic synthesis, they argue that most of the batholiths are not products of arc magmatism as commonly believed, but instead were formed by slab failure during and after collision. They show that slab window and Precambrian TTG suites share many geochemical similarities with Cretaceous slab failure rocks. Geochemical and isotopic data indicate that the slab failure magmas were derived dominantly from the mantle and thus have been one of the largest contributors to growth of continental crust. The authors also note that slab failure plutons emplaced into the epizone are commonly associated with Cu-Au porphyries, as well as Li-Cs-Ta pegmatites.

Type: Book
Ten Digit ISBN:
Thirteen Digit ISBN: 9780813725321
Publisher: GSA
Binding: Paperback
Pages: 113
Weight: 0.55 kg


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