Geology of Chief Joseph Pass, Wyoming: Crest of Rattlesnake Mountain anticline and escape path of the Eocene Heart Mountain slide

David Malone; John Craddock; Alexandra Wallenberg; Betrand Gaschot; John A. Luczaj

doi:10.1130/2022.2555(12)

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Geology of Chief Joseph Pass, Wyoming: Crest of Rattlesnake Mountain anticline and escape path of the Eocene Heart Mountain slide

Author(s)

David Malone

Department of Geography, Geology and the Environment, Illinois State University, Normal, Illinois 61790, USA

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;

John Craddock

Geology Department, Macalester College, St. Paul, Minnesota 55105, USA

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;

Alexandra Wallenberg

Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA

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;

Betrand Gaschot

Department of Geology & Geography, University of West Virginia, Morgantown, West Virginia 26505, USA

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;

John A. Luczaj

Department of Natural & Applied Sciences, University of Wisconsin–Green Bay, 2420 Nicolet Drive, Green Bay, Wisconsin 54311, USA

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Doi:

https://doi.org/10.1130/2022.2555(12)

Published:

May 03, 2022

ABSTRACT

Rattlesnake Mountain is a Laramide uplift cored by Archean gneiss that formed by offset along two reverse faults with opposing dips, the result being an asymmetric anticline with a drape fold of Cambrian–Cretaceous sediments. Rattlesnake Mountain was uplifted ca. 57 Ma and was a structural buttress that impeded motion of upper-plate blocks of the catastrophic Heart Mountain slide (49.19 Ma). North of Pat O’Hara Mountain anticline, Rattlesnake Mountain anticline has a central graben that formed ca. 52 Ma (U-Pb age on vein calcite in normal faults) into which O- and C-depleted fluids propagated upward with hydrocarbons. The graben is...

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GSA Special Papers

Tectonic Evolution of the Sevier-Laramide Hinterland, Thrust Belt, and Foreland, and Postorogenic Slab Rollback (180–20 Ma)
CONTAINS OPEN ACCESS

Editor(s)

Geological Society of America

Volume

555

DOI:

https://doi.org/10.1130/SPE555

Open Access. Gold Open Access: This chapter is published under the terms of the CC-BY license.

ISBN electronic:

9780813795553

ISBN print:

9780813725550

Publication date:

May 03, 2022

This Special Paper focuses on the evolution of the crust of the hinterland of the orogen during the orogenic cycle, and describes the evolution of the crust and basins at metamorphic core complexes. The volume includes a regional study of the Sevier-Laramide orogens in the Wyoming province, a regional seismic study, strain analysis of Sevier and Laramide deformation, and detrital zircon provenance from the Pacific Coast to the foreland between the Jurassic and the Eocene.

Geology of Chief Joseph Pass, Wyoming: Crest of Rattlesnake Mountain anticline and escape path of the Eocene Heart Mountain slide

ABSTRACT

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Contents

Tectonic Evolution of the Sevier-Laramide Hinterland, Thrust Belt, and Foreland, and Postorogenic Slab Rollback (180–20 Ma)
CONTAINS OPEN ACCESS

GeoRef

References

Related

Citing Books via

Geology of Chief Joseph Pass, Wyoming: Crest of Rattlesnake Mountain anticline and escape path of the Eocene Heart Mountain slide

ABSTRACT

Figures & Tables

Contents

Tectonic Evolution of the Sevier-Laramide Hinterland, Thrust Belt, and Foreland, and Postorogenic Slab Rollback (180–20 Ma) CONTAINS OPEN ACCESS

GeoRef

References

Related

Citing Books via

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Tectonic Evolution of the Sevier-Laramide Hinterland, Thrust Belt, and Foreland, and Postorogenic Slab Rollback (180–20 Ma)
CONTAINS OPEN ACCESS