Calcite twinning strains associated with Laramide uplifts, Wyoming Province

John P. Craddock; David H. Malone; Alexandros Konstantinou*; John Spruell; Ryan Porter

doi:10.1130/2021.2555(06)

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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

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.

Book Chapter

Calcite twinning strains associated with Laramide uplifts, Wyoming Province

Author(s)

John P. Craddock

Department of Geology, Macalester College, Saint Paul, Minnesota 55105, USA

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;

David H. Malone

Department of Geography-Geology, Illinois State University, Normal, Illinois 61790, USA

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;

Alexandros Konstantinou*

Department of Geological Sciences, Stanford University, 450 Serra Mall, Stanford, California 94305, USA

*Currently at ExxonMobil Upstream Integrated Solutions, 22777 Springwoods Village Parkway, Spring, Texas 77389, USA.

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;

John Spruell

School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA

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;

Ryan Porter

School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA

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Doi:

https://doi.org/10.1130/2021.2555(06)

Published:

May 03, 2022

ABSTRACT

We report the results of 167 calcite twinning strain analyses (131 limestones and 36 calcite veins, n = 7368 twin measurements) from the Teton–Gros Ventre (west; n = 21), Wind River (n = 43), Beartooth (n = 32), Bighorn (n = 32), and Black Hills (east; n = 11) Laramide uplifts. Country rock limestones record only a layer-parallel shortening (LPS) strain fabric in many orientations across the region. Synorogenic veins record both vein-parallel shortening (VPS) and vein-normal shortening (VNS) fabrics in many orientations. Twinning strain overprints were not observed in the limestone or vein samples in...

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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

Calcite twinning strains associated with Laramide uplifts, Wyoming Province

ABSTRACT

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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