Oblique oceanic opening and passive margin irregularity, as inherited in the Zagros fold-and-thrust belt - Archive ouverte HAL Access content directly
Journal Articles Terra Nova Year : 2014

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

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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.

Dates and versions

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

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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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