Geometric evidence for synchronous thrusting in the southern Alberta and northwest Montana thrust belts

Structure of the Patagonian Andes: Regional Balanced Cross Section at 50° S, Argentina

“…Even though the processes of internal-wedge deformation are common in most of the thinskinned fold belts of the world (Boyer, 1992;Jadoon et al, 1992;Puigdefabregas et al, 1992), the structural evidence presented in this paper in dicates that the activation of lower-basement thrusts below the original basal décollement is the dominant means of preserving the orogenicwedge taper in a fold belt, with a mixed thin-and thick-skinned structural style. A similar struc tural style and kinematics have been described in the Papuan fold belt (Hill, 1991).…”

3D evolution of fold and thrust belts formed by oblique convergence

“…In the 60 and 458 oblique convergence models oblique slip was also observed on some of the pro-wedge thrust systems as very localized, small-scale deformation partitioning occurred. Synchronous slip on major thrust faults in foreland fold and thrust belts has been discussed by Boyer (1992) and may possibly be more common in fold thrust-belts than hitherto recognized.…”

Geometry and kinematics of experimental antiformal stacks

“…17), as shown by Jadoon et al (1992) in the Sulaiman fold belt in the western margin of the Indian plate. Boyer (1992) discussed why the typical model for duplex system evolution in a forward-breaking sequence (Boyer 1978, Boyer & Elliott 1982 fails to explain some thrust system geometries. The experiments in his study also suggest that this model for duplex evolution is not always appropriate.…”