 Early Sevier thrusting began well before initial Laramide deformation, nevertheless, there is evidence that suggests late Sevier faults were active during the early Laramide.The majority of Sevier deformation occurred west of Laramide deformation, however, there is some geographic overlap between the eastern Sevier margin and the western Laramide margin.In southwestern Utah, Sevier thrusts may have remained somewhat active until the Eocene, while Laramide deformation began in the late Cretaceous.