Please use this identifier to cite or link to this item:
|Scopus||Web of Science®||Altmetric|
|Title:||Ductile extrusion in continental collision zones: Ambiguities in the definition of channel flow and its identification in ancient orogens|
|Citation:||Geological Society Special Publication, 2006; Issue 268(1):201-219|
|Publisher:||Geological Society Publishing House|
|R. R. Jones, R. E. Holdsworth, M. Hand and B. Goscombe|
|Abstract:||Field characteristics of crustal extrusion zones include: high-grade metamorphism flanked by lower-grade rocks; broadly coeval flanking shear zones with opposing senses of shear; early ductile fabrics successively overprinted by semi-brittle and brittle structures; and localization of strain to give a more extensive deformation history within the extrusion zone relative to the flanking regions. Crustal extrusion, involving a combination of pure and simple shear, is a regular consequence of bulk orogenic thickening and contraction during continental collision. Extrusion can occur in response to different tectonic settings, and need not necessarily imply a driving force linked to mid-crustal channel flow. In most situations, field criteria alone are unlikely to be sufficient to determine the driving causes of extrusion. This is illustrated with examples from the Nanga Parbat-Haramosh Massif in the Pakistan Himalaya, and the Wing Pond Shear Zone in Newfoundland.|
|Rights:||© 2006 Geological Society of London|
|Appears in Collections:||Earth and Environmental Sciences publications|
Environment Institute publications
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.