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Journal Articles Terra Nova Year : 2014

Oblique oceanic opening and passive margin irregularity, as inherited in the Zagros fold-and-thrust belt

Abstract

The Zagros fold-and-thrust belt of SW Iran represents deformation of the former Arabian passive margin since Permian–Triassic opening of the Neo-Tethys ocean. The Zagros belt is characterized by a present-day structural salient-recess setting inherited from past marginal embayment-promontory geometry, which was involved in discontinuous ophiolite obduction and diachronous continental collision. We examine outcrop-scale Mesozoic extensional brittle tectonics, preserved as syn-depositional normal faults within the folded strata, in terms of stress tensor inversion. The result is then integrated with belt-scale isopach, seismic and topographical data to delineate the geometry of a major irregularity along the passive margin originating from oblique oceanic opening. The implication of this configuration within the tectonic framework of oceanic closure is discussed.

Domains

Earth Sciences

Dates and versions

hal-01410204 , version 1 (06-12-2016)

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Cite

Payman Navabpour, Eric Barrier, Harry Mcquillan. Oblique oceanic opening and passive margin irregularity, as inherited in the Zagros fold-and-thrust belt. Terra Nova, 2014, 26 (3), pp.208-215. ⟨10.1111/ter.12088⟩. ⟨hal-01410204⟩
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