A5020438190- Geological and Geochemical Analysis
- Hydrocarbon exploration and reservoir analysis
- Geological and Geophysical Studies Worldwide
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Geological formations and processes
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Geologic Mapping
- Methane Hydrates and Related Phenomena
- Archaeological and Geological Studies
- CO2 Sequestration and Geologic Interactions
- Archaeological and Historical Studies
- Hydraulic Fracturing and Reservoir Analysis
- Evolution and Paleontology Studies
- Groundwater and Isotope Geochemistry
- Calcium Carbonate Crystallization and Inhibition
- Geological Studies and Exploration
- Landslides and related hazards
- Pleistocene-Era Hominins and Archaeology
- Drilling and Well Engineering
- Geochemistry and Elemental Analysis
- Seismic Imaging and Inversion Techniques
- Marine and environmental studies
- Mineral Processing and Grinding
- Atmospheric and Environmental Gas Dynamics
Centre National de la Recherche Scientifique
2010-2024
Université de Pau et des Pays de l'Adour
2013-2024
Laboratoire de Dynamique des Fluides
2014-2023
Laboratoire des Fluides Complexes et leurs Réservoirs
2014-2023
Total (France)
2017-2023
Laboratoire Chrono-Environnement
2012-2015
Institut de Recherche pour le Développement
2008-2015
Université de Toulouse
2008-2015
Géosciences Environnement Toulouse
2013-2015
Observatoire Midi-Pyrénées
2013
A regional survey of alkaline springs in Oman and Ligurian ophiolites shows that the water compositions significantly vary from one ophiolite to other within same ophiolite. The first‐order correlation between Na (and K) Cl concentrations points fluid only partly due evaporation. scatter around evaporation line implies may not be conservative during alteration ultramafic rocks. Mg is almost entirely depleted at pH > 10.5 as a result serpentine formation body brucite minor hydrotalcite)...
This first multidisciplinary study simulating the H 2 arrival in deep aquifers used as geological storage shows importance of microorganisms.
Massive storage of dihydrogen (H2) in underground geological (UGSs) will be necessary to meet future H2 production ambitions. Such deep aquifers was simulated a high-pressure reactor, and the evolution 3 phases (natural gas/H2, formation water rock) with autochthonous microorganisms monitored over several weeks. These results show that methanogens do not necessarily dominate community, but sulfate-reducing activity formate bioproduction are systematically present. The experimental data were...
We report on the mineralogical assemblages found in hyperalkaline springs hosted Liguria and Oman ophiolites based exhaustive X‐ray diffraction scanning electron microprobe analyses. In Liguria, produce a thin brownish calcite precipitate that covers bedrock due to concomitant atmospheric CO 2 uptake neutralization of waters. No brucite portlandite minerals are observed. The discharge alkaline waters ophiolite forms white‐orange precipitates. Calcium carbonate (calcite and/or aragonite) most...
Serpentinisation of mantle rocks, leading to natural venting hydrogen and methane, has been reported occur at the global scale, wherever fluids percolate in ultramafic formations. Here we compare gas composition from two on-land, low-temperature, hyper-alkaline springs hosted on rocks ophiolite massifs Sultanate Oman Ligurian Alps (Voltri Group, Genoa region, Northern Italy). These settings exhibit similar chemical mineralogical features but show diverse styles venting. Commonly all springs,...
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...
Hydrogen (H 2 ) emanations have been recognized in the south and north of Pyrenees fold belt, within its two forelands. The proposed source is a mantle wedge quite close to surface that currently undergoing serpentinization. migration pathway seems be deep rooting faults, as H content higher where faults reach surface. zone current generation around 10 km deep. It evident from filed observations kilometric pieces incorporated into thrusts outcrop few areas along mountain belt. We studied...
Plate kinematic reconstructions of the boundary between Iberia, Adria microplates and Europe during Mid-Late Cretaceous deformation is disputed. At this time collision in the Pyrenees-Provence, the Eo-Alpine phase of subduction, and far-field inversion in Western...
Abstract. We report the results of a multiproxy study that combines structural analysis fracture–stylolite network and isotopic characterization calcite vein cements and/or fault coating. Together with new paleopiezometric radiometric constraints on burial evolution deformation timing, these provide first-order picture regional fluid systems pathways were present during main stages contraction in Tuscan Nappe Umbria–Marche Apennine Ridge (northern Apennines). reconstruct four steps at scale...
Abstract This study aims at understanding the origin and nature of syn‐orogenic fluid flow in Jaca basin from South Pyrenean fold thrust‐belt, as recorded calcite quartz veins Sierras Interiores (Spain) turbiditic basin, which cover upper Cretaceous to Late Eocene syntectonic deposits. The fracture network consists a classical pattern transverse longitudinal fractures related Layer Parallel Shortening ( LPS ) folding respectively. Veins filled equally about third carbonate shelf turbidites....
ABSTRACT This paper presents a revised geological map at the 1/50,000 scale of Central Sivas Basin together with synthetic stratigraphic chart and cross-sections. The covers an area approximately 9840 km² within Eastern Anatolian orogen. structure studied is dominated by three major tectonic domains: (i) to south, north-verging thrust wedge involving Maastrichtian – Eocene sediments deposited onto ophiolitic basement, (ii) in center Oligo-Miocene domain shaped salt tectonics detached above...
Abstract. Dating syntectonic sedimentary sequences is often seen as the unique way to constrain initiation, duration, and rate of folding well sequence deformation in shallow crust. Beyond fold growth, however, mesostructures accommodate internal strain pre-folding strata before, during, after tilting. Absolute dating syn-folding may help duration growth absence preserved strata. related early-folding layer-parallel shortening late tightening provides an access timing entire event. We...
Abstract. Uranium–lead (U–Pb) dating of carbonates by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) spot analysis is an increasingly used method in the field geosciences, as it brings very strong constraints over geological history basins, faults or reservoirs. Most ages currently published are based on measurement U and Pb ratios ablations, using nanosecond lasers to sector multi-collector ICP-MS. Here, we test a new strategy for U–Pb from 2D isotopic ratio maps,...
Abstract Five successive fossil submarine slides have been mapped and described in the Sobrarbe deltaic complex (Ainsa Basin, Spanish Pyrenees). These affect remove up to 15% of delta front. The head scar surfaces is recognized clearly field due angular unconformity between infilling sediments underlying layers. Most slide scarps trend 55°N with 20° 40° dips indicating north‐westward sliding. Downslope, traces sliding parallel stratification. However, these can be identified by displaced...