Abstract
A thick wedge of Precambrian crystalline rocks of the Wind River Mountains was thrust far across sediments of the Green River basin during the Laramide orogeny. Dip of the thrust zone decreases with depth to form a broadly curved, convex-downward surface. Seismic data also show strong local curvatures that produce a scalloped pattern in the leading edge of the thrust wedge and divide the wedge into lobate segments that are about 8 mi (13 km) wide along strike. The explanation for this scalloped pattern of folding may be lengthening of the unconfined wedge margin by extension during thrusting. Curvature of the thrust surface confirms that deformation of Precambrian rocks occurred by a foldlike mechanism. Local curvatures can also explain low apparent-dip angles of some oth r thrust faults in the Wyoming foreland. End_of_Article - Last_Page 932------------
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
