TL;DR: In this article, the authors use structures in the Hormuz salt to map and gauge the tectonic pulse of basement blocks that jostled as ocean basins opened and closed diachronously like zip fasteners along the Tethyan margin of Gondwana.
Abstract: Abstract Longitudinal components of the Zagros mountain chain change in character and width across N-S trending zones of strike-slip transfer faults lying between 51° and 54°E. To the northwest, a fold-thrust belt with consistent SW vergence has a width of c. 220 km in front of an imbricate belt c. 160 km wide. To the southeast, an imbricate zone c. 80 km wide is fronted by a gently tapering festoon of upright periclines that is c. 350 km wide and punctured by over a hundred emergent salt diapirs. Pre-Zagros stages of the transfer zones in the Zagros are preserved on the Arabian platform and the two most obvious bound what we call the incipient Qatar syntaxis. This is at an early stage of one of the many syntaxes that compartmentalize the Alpine-Himalayan mountain chain. We use structures in the Hormuz salt to map and gauge the tectonic pulse of basement blocks that jostled as ocean basins opened and closed diachronously like zip fasteners along the Tethyan margin of Gondwana. This incipient syntaxis was a lithospheric key that went up while others went down during the rifting and riffling, but not drifting, of the still-born Hormuz basin we call Proto-Tethys.
TL;DR: In this article, a combination of geological and geochronological investigations of the eastern Himalayan syntaxis in the Namche Barwa region of Tibet reveal the first-order elements of its Cenozoic tectonic evolution.
TL;DR: The region between India and South China has evolved tectonically as an accommodation zone during postcollisional intracontinental deformation between the Indian and Eurasian plates as mentioned in this paper.
Abstract: The region between India and South China has evolved tectonically as an accommodation zone during postcollisional intracontinental deformation between the Indian and Eurasian plates. During postcollisional convergence, and as India rotated in a counterclockwise direction, the eastern Himalayan syntaxis migrated northward, and crustal material between India and South China was subject to increasing amounts of shortening and right-lateral shear. Crustal fragments were extruded to the southeast from north of the syntaxis, bounded on the west by the right-lateral Gaoligong fault and on the east by the left-lateral Ailao Shan shear zone. Between these two shear zones, crustal material was deformed by shortening, strike-slip faulting, and clockwise rotation. Clockwise rotation caused bending and superposed shortening of early structures, leading to the development of NE-trending left-lateral shear zones and E-W extension. Extrusion of crustal material was accompanied by significant internal deformation of crust...
TL;DR: In this article, the authors argue that the rapid exhumation of deep crustal levels in mountain systems is generally related to extension subsequent to thermal softening of a thickened continental lithosphere.
TL;DR: In this paper, high-pressure and ultra-high-pressure rocks with origins in a variety of protoliths occur in various settings: accretionary wedge, oceanic subduction zone, subducted continental margin and continental collisional zone.