Abstract
Integrative field mapping combined with published and unpublished seismic profiles, support an inferred, easternmost limit of Sevier thrusting during Late Cretaceous foreland deformation in east-central Utah. East-verging thrust faults, drag folds, and chatter marks within Jurassic and Late-Cretaceous exposures at Ketobe Knob along the western margin of Cedar Mountain in the northwestern and central parts of the San Rafael Swell and within the western zone of the Colorado Plateau provide evidence for a more easterly expression of the Sevier Thrust Front. Offset is accomplished by bedding-parallel slippage along less competent shales and siltstones and by oblique ramping across more competent sandstones and conglomerates. The kinematic mechanism appears to have been a layer-parallel shortening accomplished along nearly horizontal, nearly east-directed compression.
Department/Program
Geosciences
Submission Type
in-person poster
Date
2-24-2025
Rights
Copyright the Author(s)
Recommended Citation
Neuhauser, Kenneth R.
(2025)
"Easternmost Limit of Sevier Orogeny, East-Central Utah Revisited,"
SACAD: Scholarly Activities: Vol. 2025, Article 116.
Available at:
https://scholars.fhsu.edu/sacad/vol2025/iss2025/116
