A5011725313- Geological and Geochemical Analysis
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geological and Geophysical Studies Worldwide
- Geochemistry and Geologic Mapping
- Archaeological and Historical Studies
- Archaeological and Geological Studies
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Induction Heating and Inverter Technology
- Maritime and Coastal Archaeology
- Archaeology and ancient environmental studies
- Electromagnetic Launch and Propulsion Technology
- Geotechnical and Geomechanical Engineering
- Seismic Waves and Analysis
- Methane Hydrates and Related Phenomena
- Geological Formations and Processes Exploration
- Geological formations and processes
- Mineralogy and Gemology Studies
- Planetary Science and Exploration
- Geological Studies and Exploration
- Pleistocene-Era Hominins and Archaeology
- CO2 Sequestration and Geologic Interactions
Géoazur
2021-2023
GFZ Helmholtz Centre for Geosciences
2019-2021
Institut de physique du globe de Paris
2017-2020
Centre National de la Recherche Scientifique
2013-2020
Université Paris Cité
2018-2020
Sorbonne Paris Cité
2018-2019
Bureau de Recherches Géologiques et Minières
2012-2018
Université d'Orléans
2013-2018
Laboratoire de Dynamique des Fluides
2016-2018
Laboratoire des Fluides Complexes et leurs Réservoirs
2016-2018
Slab retreat, slab tearing and interactions of slabs are first-order drivers the deformation overriding lithosphere. An independent description tectonic evolution back-arc peripheral regions is a pre-requisite to test proposed conceptual, analogue numerical models these complex dynamics in 3-D. We propose here new series detailed kinematics reconstructions from 35 Ma Present shedding light on driving mechanisms rifting Mediterranean where several basins all started form Oligocene. The...
Abstract Topography in forearc regions reflects tectonic processes along the subduction interface, from seismic cycle-related transients to long-term competition between accretion and erosion. Yet, no consensus exists about topography drivers, especially as contribution of deep remains poorly constrained. Here, we use thermo-mechanical simulations show that transient slab-top stripping events at base crust control uplift-then-subsidence sequences. This 100s-m-high topographic signal with a...
Since the Mesozoic, Africa has been under extension with shorter periods of compression associated obduction ophiolites on its northern margin. Less frequent than “normal” subduction, is a first order process that remains enigmatic. The closure Neo-Tethys Ocean, by Upper Cretaceous, characterized major event, from Mediterranean region to Himalayas, best represented around Arabian Plate, Cyprus Oman. These were all emplaced in short time window Late ∼100 75 Ma, margin Africa, context over...
Slab tearing induces localized deformations in the overriding plates of subduction zones and transfer accommodating differential retreat back-arc regions. Because space available for retreating slabs is limited Mediterranean realm, slab during has been a major ingredient evolution this region since end Eocene. The association detailed seismic tomographic models extensive field observations makes an ideal natural laboratory to study these zones. We review paper various structures regions from...
The natural variability of geometry and dynamics subduction zones leads to a variety mantle crustal processes that may influence the genesis ore deposits in overriding plate. These complex interactions cannot be fully represented by two-dimensional (2D) models but require spatial temporal evolution examined detailed 3D tectonic framework. We compare discuss geodynamic metallogenic eastern Mediterranean zone since late Cretaceous integrating newly compiled database with recent kinematic...
Abstract Within deforming continental regions where metamorphic core complexes (MCCs) and synextensional granitoids are closely associated, deciphering the link between detachment faulting magmatism often remains complex as (1) rheological weakness of magma may stimulate mechanisms strain localization, conversely, (2) tectonic processes open/close drains magmas can intrude. Here we tackle this issue by focusing on Cyclades with comparison five granitoid‐cored MCCs (Tinos, Mykonos, Ikaria,...
Abstract In the Aegean back‐arc domain, some 30–35 Ma ago, an increase of rate slab retreat led to initiation post‐orogenic extension, largely accommodated by large‐scale structures such as North Cycladic Detachment System (NCDS). Although this extension is still active nowadays, E–W compressional regime developed in Late Miocene with propagation Anatolian Fault. On Mykonos island (Cyclades), NE–SW particularly well expressed Livada and detachments that belong NCDS are associated NW–SE...
Abstract The heterogeneity of frictional strength along the megathrust earthquake zone critically controls plate coupling and long-term subduction dynamics. However, persistence distribution high-friction segments through space time remain poorly constrained. Here, we show that accretion processes, such as tectonic underplating (i.e., basal material below fore-arc region), can be used a proxy to characterize zonation interface. We carry out numerical thermo-mechanical experiments, which...
Abstract The Chaînons Béarnais (CB, North Pyrenean Zone) resulted from the Cenozoic contractional reactivation of salt tectonics‐bearing, hyperextended margin that initiated at Europe‐Iberia transition during Early Cretaceous. In this tectonic scenario, assessing relative contribution extension and contraction to present‐day structure is crucial reconstruct geometry quantify subsequent shortening. This study undertakes issue by defining relationship between folding two bedding‐independent...
Abstract Several decades of field, geophysical, analogue, and numerical modeling investigations have enabled documentation the wide range tectonic transport processes in accretionary wedges, which constitute some most dynamic plate boundary environments on Earth. Active convergent margins can exhibit basal accretion (via underplating) leading to formation variably thick duplex structures or erosion, latter known lead consumption previously accreted material eventually forearc continental...
The massive transfer of material at depth significantly influences the long-term morphology active subduction zones. However, process basal accretion (or tectonic underplating), when active, remains challenging to observe directly, due low resolution geophysical imaging high and lack spatial temporal constraints on its topographic signature in fore-arc domains. To tackle this issue, we aim constraining size accreted slices that were stacked pressure/low temperature (HP/LT) conditions build...
We present here a number of geological observations in extensional contexts, either continental rifts or back-arcs, that show different situations potential coupling between asthenospheric flow and crustal deformation. Several these examples deformation distributed over hectometre to kilometre thick shear zones, accommodated by shallow dipping zones with constant asymmetry large distances. This is the case Mediterranean back-arc basins, such as Aegean Sea, northern Tyrrhenian Alboran domain...
Abstract Although fundamental to the understanding of crustal dynamics in extensional setting, relationships between emplacement granitic intrusions and activity detachments still remain very elusive. Through a multiscale approach, we here document continuous deformation history monzogranitic intrusion Naxos Naxos‐Paros Detachment System (Cyclades, Greece). Field observations first show an early magmatic followed by solid‐state, ductile, then brittle when approaching detachment zone, as...
Geodynamics evolution of subduction zones is often complex, notably due to the variable nature and rheology interacting lithospheres, 3D slab geometry related mantle flow. In order understand temporal this dynamics, long-term geological record should be considered, including present-day kinematics, history deformation magmatism within upper plate. study, we focus on eastern Mediterranean region where a long-lived zone has been active since Mesozoic. region, Tethyan margin characterized by...