The High Zagros fault (HZF)

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Table of contents

Introuduction Générale
General introduction
Goal of thesis
I ) TECTONIC AND GEODYNAMIC SETTING OF THE ZAGROS MOUNTAINS /  CONTEXTE TETONIQUE ET GEODYNAMIQUE DU ZAGROS Résumé en français
1. Intruduction and plate tectonic context
2. Geodynamic evolution of the Zagros
2.1. Prior to continental collision
2.2. Post collisional tectonics
3. Structure of the Zagros Fold-Thrust Belt
3.1. Morphotectonic units of the Zagros Mountains
3.1.1 The Zagros Imbricate Zone
3.1.2 The Zagros Simply Folded Belt
3.1.3 The Zagros Foredeep
3.1.4 The Zagros Coastal Plain and Mesopotamian lowland
3.1.5 The Persian Gulf
3.2. Major Fault Structures
3.2.1 The Main Zagros Thrust (MZT) or the Zagros Suture
3.2.2 The Main Recent Fault (MRF)
3.2.3 The High Zagros fault (HZF)
3.2.4 The Mountain Front fault (MFF)
3.2.5 The Zagros Foredeep fault (ZFF)
3.2.6 The Kazerun-Borazjan fault (KF)
3.2.7 The Kareh Bas (KBS) strike-slip fault
3.3. Seismicity in the Zagros
3.4. Geodetic (GPS) measurments
3.5. Crustal and lithospheric structure
3.6. Structural the Zagros belt
3.6.1 Introduction
3.6.2 Stratigraphy and major decoupling surfaces  Hormuz Salt (Lower detachment level)  Gachsaran Formation (Upper detachment level)
3.6.3 Structural models of the Zagros belt
II ) METHODOLOGY / MÉTHODOLOGIE
Résumé en français
1. Tectonic geomorphology
2. Geomorphic markers
2.1. Intruduction
2.2. Marine terraces
2.3. Fluvial Terraces
3. River long profile
4. Absolute dating methods
4.1. C-14 Dating
4.2. Cosmogenic Radio Nuclieds
4.2.1 Introduction
4.2.2. Theory of cosmogenic isotope analysis; summary
III) ACTIVE FOLDING EVIDENCED AT THE CENTRAL ZAGROS FRONT  EVIDENCES DE PLISSEMENT ACTIVE AU FRONT DU ZAGROS CENTRAL
Résumé en français
Rates and Processes of active folding evidenced by  Pleistocene terraces at the central Zagros front (Iran) Abstract
1. Introduction
2. Geological and Seismotectonic Setting
2.1. Regional balanced cross section
3. The Mand Detachment Fold
3.1. Structure
3.2. Fold solution and finite shortening
Case 1: folding above a SW-vergent fault
Case 2: fold detachment with internal deformation
Case 3: Detachment fold accompanied by synclinal flexures
3.3. Fold solution and incremental deformation at the surface
4. Recent deformation of Mand anticline
4.1. Tilted marine and fluvial terraces
Southern site (site A)
Central site (site B)
Northern site (site C)
4.2. Terrace dating and rates of tilting
4.3. Folding model and shortening rate
5. Discussion
6. Conclusion
IV) SYNCLINE CORES EXTRUSION ABOVE A VISCOUS LAYER EMBEDDED  IN THE CRITICAL WEDGE OF THE CENTRAL ZAGROS FOLD BELT / EXTRUSON DE COEURS DE SYNCLINUX AU-DESSUS D4UNE COUCHE VISCEUSE DANS LE PRISME CRITIQUE DU ZAGROS Résumé en français
Abstract
1. Introduction
2. Geological setting
3. Surface deformation in western internal Fars province  recorded by Bakhtyari Formation
3.1. Stratigraphic description
3.2. Deformation recorded by the Pleistocene Baktiari surfaces
3.2.1 Baladeh monocline uplift
3.2.2. Kuh-e-Pahn North : syncline core extrusion
3.2.3. Kuh-e-Pahn South: flexural flow
3.2.4. Gachsaran formation and syncline core deformation
4. Numerical modelling of syncline reactivation
4.1. Model characteristics
4.2. Results and influence of the syncline geometry on surface deformation
5. Discussion
V) THICK- AND THIN-SKINNED DEFORMATION RATES IN THE ZAGROS  SIMPLE FOLDED ZONE (IRAN) INDICATED BY DISPLACEMENT OF GEOMORPHIC SURFACES / TAUX DE DÉFORMATION CRUSTALE ET SUPERFICIELLE DANS LA ZONE PLISSÉE DU ZAGROS (IRAN) A PARTIR DU DEPLACEMENT DE SURFACES GEOMORPHOLOGIQUES
Résumé en français
Abstract
1. Introduction
2. Geological setting
2.1. Tectonics and stratigraphy of the Zagros SFZ
2.2. Regional structures and balanced cross sections
3. Deformed Geomorphic Markers  fold models and shortening: methodology
3.1. Terrace mapping and dating
3.2. Terrace deformation and fold kinematics
3.3. Fold deformation and absorbed shortening
4. Incision and deformation recorded by Quaternary fluvial  and marine terraces in Western Fars
4.1 Deformation of mid-Pleistocene Bakhtyari surfaces
4.1.1. Sedimentology and age of the Bakhtyari Formation
4.1.2. Baladeh monocline
4.1.3. General incision and deformation profile of the Bakhtyari surfaces
4.2. Late Pleistocene fluvial terraces along the Dalaki River
4.2.1. Structural setting and general terrace description
4.2.2. Dalaki River terraces in the hangingwall of the MFF
4.2.3. Incision and fold model
4.3. Late Pleistocene fluvial terraces and river profile along the Mand River
4.3.1. Description of the fill and strath terraces along the Mand River
4.3.2. River and terrace profiles and basement fault activity
4.3.3. Terrace dating and fluvial incision rates in the Kuh e Halikan region
4.4. Deformation recorded by Late Pleistocene marine terraces along the Persian Gulf
4.4.1. Mand anticline
4.4.2. Madar anticline
5. Discussion: spatial distribution of active shortening and  seismotectonic implications
5.1. Thin versus thick-skinned tectonics
5.1.1 Surface deformation above inferred basement faults
5.1.2 Evidence for activity of shallow structures
5.2. Fold evolution: from detachment to fault-related folds
5.2.1. Detachment folding above Hormuz Salt
5.2.2. Transition from detachment- to fault-propagation  folding above the Gachsaran décollement 5.2.3. Fold evolution with increasing deformation
5.3. Seismotectonic model for the Zagros fold belt in the western Fars
6. Conclusion
VI) GENERAL CONCLUSION / CONCLUSION GENERALE
References