The leading wisps of Yellowstone: Post–ca. 5 Ma extension-related magmatism in the upper Wind River Basin, Wyoming (USA), associated with the Yellowstone hotspot tectonic parabola | Zendy

Matthew E. Brueseke | Zendy; Anna C. Downey | Zendy; Zachary C. Dodd | Zendy; William K. Hart | Zendy; Dave C. Adams | Zendy; Jeffrey A. Benowitz | Zendy

Open Access

The leading wisps of Yellowstone: Post–ca. 5 Ma extension-related magmatism in the upper Wind River Basin, Wyoming (USA), associated with the Yellowstone hotspot tectonic parabola

Author(s) -

Matthew E. Brueseke,

Anna C. Downey,

Zachary C. Dodd,

William K. Hart,

Dave C. Adams,

Jeffrey A. Benowitz

Publication year - 2017

Publication title -

geosphere

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.879

H-Index - 58

ISSN - 1553-040X

DOI - 10.1130/ges01553.1

Subject(s) - geology , magmatism , volcanic rock , basalt , geochemistry , igneous rock , pacific plate , asthenosphere , andesite , subduction , basin and range topography , volcanism , felsic , large igneous province , paleontology , earth science , tectonics , volcano

The upper Wind River Basin in northwest Wyoming (USA) is located ~80– 100 km southeast of the Yellowstone Plateau volcanic field. While the upper Wind River Basin is a manifestation of primarily Cretaceous to Eocene Laramide tectonics, younger events have played a role in its formation, including Eocene Absaroka volcanism, Cenozoic lithospheric extension, and the migration of the North American plate over the Yellowstone hotspot tail. New 40Ar/39Ar ages coupled with existing K-Ar results from intrusives and lavas in the upper Wind River Basin show that igneous activity younger than ca. 5 Ma occurred locally. Field and geochemical data show that these

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