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Doctoral thesis
Open access
English

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

ContributorsPirouz, Mortaza
DirectorsSimpson, Guy
Collection
  • Terre et Environnement; 117
Defense date2013-01-18
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.

eng
Keywords
  • Zagros
  • Foreland basin
  • Flexural modelling
  • 3D structural modelling
  • Strontium isotope dating
  • Clastic sequence stratigraphy
Funding
  • Swiss National Science Foundation - Influence of wedge-rheology on the developent of foreland basin systems - insights from the zagros orogen and numerical modelling
Citation (ISO format)
PIROUZ, Mortaza. The geometry and sedimentary record of tectonics in the Neogene Zagros foreland basin. 2013. doi: 10.13097/archive-ouverte/unige:29064
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Thesis
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Technical informations

Creation07/08/2013 1:33:00 AM
First validation07/08/2013 1:33:00 AM
Update time03/14/2023 8:21:33 PM
Status update03/14/2023 8:21:33 PM
Last indexation01/29/2024 7:53:56 PM
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