A5073976639- Geological and Geophysical Studies Worldwide
- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Geological formations and processes
- Hydrocarbon exploration and reservoir analysis
- Archaeological and Historical Studies
- Geology and Paleoclimatology Research
- Geological and Tectonic Studies in Latin America
- Geological Modeling and Analysis
- High-pressure geophysics and materials
- Geomagnetism and Paleomagnetism Studies
- Geological and Geophysical Studies
- Geochemistry and Geologic Mapping
- Archaeological and Geological Studies
- Marine and environmental studies
- Infectious Diseases and Tuberculosis
- Maritime and Coastal Archaeology
- Landslides and related hazards
- 3D Surveying and Cultural Heritage
- Geological Studies and Exploration
- African Studies and Geopolitics
- Rock Mechanics and Modeling
- Karst Systems and Hydrogeology
- Image Processing and 3D Reconstruction
- Reservoir Engineering and Simulation Methods
CY Cergy Paris Université
2015-2024
Analyse, Géométrie et Modélisation
2011-2018
Equipes Traitement de l'Information et Systèmes
1995-2018
Total (France)
2011-2015
Centre National de la Recherche Scientifique
1998-2009
Université de Bretagne Occidentale
2004
Université Paris-Sud
1987-1993
Geosciences Paris-Saclay
1991
Université de Reims Champagne-Ardenne
1987
Université Paris Cité
1987
The Atlas system (Morocco, Algeria, and Tunisia) constitutes an important morphologic barrier fringing the Sahara platform. Its structural style changes along strike from a thick‐skinned in Morocco to thin‐skinned one Algeria Tunisia. position relative Tell‐Rif is also different eastern Tunisia where two systems are adjacent western they separated by large rigid cores (Moroccan Meseta Algerian High Plateaux). New data, as well reappraisal of available show that build up occurred everywhere...
We present five generalized cross sections across the central Zagros fold‐and‐thrust belt (Iran). These show that fold geometry varies significantly both horizontally and vertically. The style is closely related to changes in mechanical behavior of lithostratigraphic horizons and, particular, presence intermediate décollements within sedimentary pile. Restoration shows amounts shortening same order from one section other. However, it appears be unequally distributed, suggesting variations...
Along the northern border of Africa, Pangea breakup has been diachronic. During Jurassic, Alpine Tethys propagated northeastward from Atlantic to Alps. Permian, Neo‐Tethys westward Oman northwestern Arabia. Then a secondary and late branch gave birth East Mediterranean basin. Finally two oceans connected at end Jurassic times, achieving development Africa plate boundary. By Late Cretaceous, convergence between Eurasia led progressive closure realm. The continental collision is not completely...
Abstract Pangea results from the progressive amalgamation of continental blocks achieved at 320 Ma. Assuming that ancient concept “active” versus “passive” rifting remains pertinent as end‐members more complex processes, we show breakup occurred through a succession episodes characterized by different tectonic evolutions. A first episode passive during Upper Carboniferous and Permian led to formation Neo‐Tethys Ocean. Then beginning Triassic times, two short active associated Siberian...
We present the first complete balanced cross section across southeastern Zagros fold‐thrust belt (ZFTB). The following main structural features emerge from this section: (1) In south of ZFTB, Proterozoic‐to‐Recent sedimentary sequence has been decoupled its Panafrican basement along ductile basal evaporites and folded into a series large detachment anticlines. Ongoing shortening these structures resulted in migration salt layers cores anticlines propagation forelimb thrusts. (2) north...
We investigate the respective roles of crustal tectonic shortening and asthenospheric processes on topography High Atlas surrounding areas (Morocco). The lithospheric structure is modeled with a direct trial‐and‐error algorithm taking into account gravity (Bouguer free air), geoid, heat flow, topography. Three parallel cross sections, crossing Anti‐Atlas ranges, show that lithosphere thinned to 60 km below these mountain ranges. An analysis effect thinning allows us conclude whole...
The Zagros Mountains result from the ongoing collision between Arabian and central Iran plates. main features of eastern are (1) numerous emerged or buried salt diapirs, made up Late Precambrian Hormuz (2) irregular along‐strike shape collision‐related detachment folds with frequent bending. To understand this layout, four geological cross sections have been constructed Persian Gulf foreland basin to inner part Fold‐and‐Thrust Belt. Shortening in deformed parts is less than 10% mainly...
The Tell-Rif (Tell in Algeria and Tunisia; Rif Morocco) is the orogenic system fringing to south West Mediterranean basins. This comprises three major tectonic-palaeogeographic zones from north south: (1) internal (AlKaPeCa for Alboran, Kabylies, Peloritan, Calabria) originating former northern European margin of Maghrebian Tethys, (2) “Flyschs zone” regarded as cover oceanic domain (3) external zones, forming southern Tethys more or less inverted. interpreted direct result progressive...
Abstract We present geophysical and geological evidence of fast (2 cm yr −1 in the east 5 west) E–W spreading between 16 8 Ma region behind Gibraltar Arc Algerian Basin.
Abstract The Upper Paleozoic geodynamic evolution is discussed at the scale of a wide part Gondwana from North Africa to Arabia. With aim giving an integrated tectonic scenario for study domain, we revisit six key areas, namely, Anti‐Atlas Belt (Morocco), Bechar Basin (west Algeria), Hassi R'Mel High (central Talemezane Arch (south Tunisia), Western Desert (Egypt), and, finally, Zagros (Iran). Below so‐called “Hercynian unconformity,” which in reality highly composite discontinuity, surface...
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...
The Zagros foldbelt – foreland system in SW Iran is a prolific hydrocarbon province with known reserves of more than 90 billion brl oil and 800 TCF natural gas. Establishing the structural style folding area presents major challenge due both to geographical extent foldbelt, which some 1600 km long total, presence marked lateral variations fold related complex regional tectonic history. In addition, while numerous high‐quality studies have been completed over last 20 years, they support...