A5008206587- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Hydrocarbon exploration and reservoir analysis
- Corrosion Behavior and Inhibition
- Nuclear materials and radiation effects
- Ion-surface interactions and analysis
- Geophysical and Geoelectrical Methods
- Magnesium Oxide Properties and Applications
- Crystal Structures and Properties
- Concrete and Cement Materials Research
- Mineralogy and Gemology Studies
- CO2 Sequestration and Geologic Interactions
- Planetary Science and Exploration
- Radioactive element chemistry and processing
- Geological Studies and Exploration
- Glass properties and applications
- Paleontology and Stratigraphy of Fossils
- Calcium Carbonate Crystallization and Inhibition
- Semiconductor Quantum Structures and Devices
- Occupational and environmental lung diseases
- Geomagnetism and Paleomagnetism Studies
- Air Quality and Health Impacts
- Atmospheric and Environmental Gas Dynamics
- X-ray Spectroscopy and Fluorescence Analysis
Centre de Recherche sur les Ions, les Matériaux et la Photonique
2012-2025
École Nationale Supérieure d'Ingénieurs de Caen
2012-2025
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2012-2025
Laboratoire Magmas et Volcans
2022-2025
Centre National de la Recherche Scientifique
2014-2025
Université Clermont Auvergne
2022-2025
Institut de Recherche pour le Développement
2007-2025
Normandie Université
2016-2023
Université de Caen Normandie
2012-2020
Université d'Orléans
2014
Abstract It has long been proposed that water incorporation in olivine dramatic effects on the upper mantle properties, affecting large‐scale geodynamics, and triggering high electrical conductivity. But laboratory‐based laws of conductivity predict contrasting water, precluding interpretation geophysical data term hydration. We review experimental measurements hydrous conclude most are consistent when errors samples contents considered. report a new law calibrated largest database oriented...
Understanding the mechanisms of parent-daughter isotopic mobility at nanoscale is key to rigorous interpretation U–Th–Pb data and associated dating. Until now, all geochronological studies on geological samples have relied either Transmission Electron Microscope (TEM) or Atom Probe Microscopy (APM) characterizations alone, thus suffering from respective weaknesses each technique. Here we focus monazite crystals a ∼1 Ga, ultrahigh temperature granulite Rogaland (Norway). This sample has...
Tektites are terrestrial impact-generated glasses distributed over regions of Earth’s surface with ejection distances up to 10,000 km. The Australasian tektite strewn field is the largest and youngest discovered so far (788 ka). However, location source crater remains unsolved. present work first investigate only monazite ever found as an inclusion in a Muong Nong (MNT) from Indochina. In-depth observations down nanoscale revealed that experienced very high temperature, silicate melt...
Abstract Exposure to ambient particulate matter (PM) with an aerodynamic diameter of <10 μm (PM 10 ) is a well‐established health hazard. There increasing evidence that geogenic (Earth‐derived) particles can induce adverse biological effects upon inhalation, though there high variability in particle bioreactivity associated source and physicochemical properties. In this study, we investigated properties reactivity volcanic ash from the April 2021 eruption La Soufrière volcano, St....
Two experimental mockups were operated for one year at 70°C to study the corrosion of C-steel and alteration AVM glass surrounded by Cox claystone. Only system included cement-bentonite grout (CBG). Nanometer-scale analyses (TEM, XANES) examined glass/C-steel interface assess CBG's effects. The most notable difference was presence a nanometric magnetite layer on surface in CBG system. This layer, promoted slightly alkaline pH (8–10) solution influenced CBG, could act as passivating barrier,...
Tungurahua volcano (Ecuador) intermittently emitted ash between 1999 and 2016, enduringly affecting the surrounding rural area its population, but health impact remains poorly documented. We aim to assess respiratory hazard posed by 16-17 August 2006 most intense eruptive phase of Tungurahua. mapped spatial distribution health-relevant size fractions produced eruption in impacted fallout. quantified mineralogy, composition, surface texture, morphology a respirable sample isolated aerodynamic...
The growth rate and internal organization of bimineralic diopside (CaMgSi2O6)-merwinite (Ca3MgSi2O8) reaction rims produced by a solid-state between monticellite (CaMgSiO4) wollastonite (CaSiO3) single crystals was determined at 900 °C, 1.2 GPa, run durations from 5 to 65 h using conventional piston-cylinder equipment. Overall rim thickness ranges 3.8 20.9 μm increases with the square root time, indicating that is diffusion controlled. Symmetrical makeup microstructure implies grow original...