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The geometry and sedimentary record of tectonics in the Neogene Zagros foreland basin

Defense Thèse de doctorat : Univ. Genève, 2013 - Sc. 4568 - 2013/01/18
Collection Terre et Environnement; 117
Abstract In this thesis, we investigate the architecture and evolution of the Zagros fold-thrust belt foreland basin system in time and space during the Neogene by measuring the 87Sr/86Sr ratio of the marine deposits and creating 3D geological-structural modelling. The results show that tectonics played a significant role in controlling stratigraphy by changing the amount of accommodation space and sediment supply. The created accommodation space is completely filled due to a high sediment supply in the western part of the Zagros as a result of high rates of surface processes in a narrow zone of deformation linked to a strong basal detachment and relatively wet climatic conditions. In contrast, the eastern part is remained underfilled because of a smaller sediment supply due to the basal Hormuz salt, which leads to a wide deformation belt with low topography, low surface slopes and subsequently low sediment supply, along with drier climatic conditions.
Keywords ZagrosForeland basinFlexural modelling3D structural modellingStrontium isotope datingClastic sequence stratigraphy
URN: urn:nbn:ch:unige-290648
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Research group Earth Surface Dynamics
Project FNS: grant no.200021-117582
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PIROUZ, Mortaza. The geometry and sedimentary record of tectonics in the Neogene Zagros foreland basin. Université de Genève. Thèse, 2013. https://archive-ouverte.unige.ch/unige:29064

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Deposited on : 2013-08-07

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