A5049640734- Geological and Geochemical Analysis
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geology and Paleoclimatology Research
- Geochemistry and Geologic Mapping
- Geological and Geophysical Studies Worldwide
- Geological and Tectonic Studies in Latin America
- Archaeological and Geological Studies
- Geotourism and Geoheritage Conservation
- Planetary Science and Exploration
- Building materials and conservation
- Geological Formations and Processes Exploration
- Groundwater and Isotope Geochemistry
- Seismic Waves and Analysis
- Astro and Planetary Science
- Geomagnetism and Paleomagnetism Studies
- TiO2 Photocatalysis and Solar Cells
- Urban Heat Island Mitigation
- Radiation Detection and Scintillator Technologies
- Rock Mechanics and Modeling
- Calibration and Measurement Techniques
- Space Exploration and Technology
- Adsorption and Cooling Systems
- Phase Change Materials Research
- Paleontology and Stratigraphy of Fossils
Institut des Sciences de la Terre d'Orléans
2010-2024
Université d'Orléans
2013-2024
Centre National de la Recherche Scientifique
2013-2024
Bureau de Recherches Géologiques et Minières
2013-2024
Institut des Sciences de la Terre
2013-2024
Laboratoire Magmas et Volcans
2015-2022
Institut de Recherche pour le Développement
2015
Consejo Superior de Investigaciones Científicas
2008-2009
Geociencias Barcelona
2008
University of Almería
1992
Santorini volcano in the Aegean region (Greece) is characterized by andesitic- to silicic-dominated explosive activity and caldera-forming eruptions, sourced from magmatic reservoirs located at various structural levels beneath volcano. There a good understanding of silica-rich magmatism island whereas andesite-dominated volcanism petrogenesis parental mafic magmas are still poorly understood. To fill this gap we have performed crystallization experiments on representative basalt with aim...
Active volcanoes are typically fed by magmatic reservoirs situated within the upper crust. The development of thermal and/or compositional gradients in such magma chambers may lead to vigorous convection as inferred from theoretical models and evidence for mixing recorded volcanic rocks. Bi-directional flow is also prevail conduits numerous persistently-active based on observed gas emissions at surface, well experiments with analogue models. However, more direct exchange flows has hitherto...
Phase equilibrium experiments were performed to determine the pre-eruptive conditions of explosive eruption Montaña Blanca (2020 bp) that occurred from a satellite vent located on east flank Teide volcano (Tenerife). Crystallization used phonolitic obsidian fall-out deposit as starting material; this contains 5 wt % anorthoclase, diopside and magnetite with minor amounts biotite ilmenite, set in glassy matrix microlites Ca-rich alkali feldspar. Temperature was varied between 850 800°C,...
Andesitic arc volcanism is the most common type of subduction-related magmatism on Earth. How these melts are generated and under which conditions they evolve towards silica-rich liquids still a matter discussion. We have performed crystallization experiments representative andesite sample from Upper Scoriae 1 (USC-1) eruption Santorini (Greece) with aim understanding such processes. Experiments were between 1000 900 °C, in pressure range 100–400 MPa, at fO2 QFM (quartz–fayalite–magnetite)...
Understanding the plumbing system structure below volcanoes and storage conditions (temperature, pressure, volatile content oxygen fugacity) of erupted magmas is paramount importance for eruption forecasting understanding factors controlling eruptive dynamics. Phase equilibria experiments have been performed on a Tungurahua andesite (Ecuador) to shed light magmatic that led July–August 2006 eruptions parameters controlled Crystallization were representative August mafic product between 950...
The relationships between trachytes and peralkaline rhyolites (i.e. pantellerites comendites), which occur in many continental rift systems, oceanic islands intraplate settings, is unclear. To fill this gap, we have performed phase equilibrium experiments on two representative metaluminous from Pantelleria to determine both their pre-eruptive equilibration conditions (pressure, temperature, H2O content redox state) liquid lines of descent. Experiments were the temperature range 750–950°C,...
Understanding the role of various factors influencing eruption style is challenging, but it can aid in adapting different hazard mitigations and crisis responses for explosive or effusive events. Here, we focus on magma storage conditions controlling styles at basaltic andesite volcanoes, how they be related to monitoring data. We study cycle (1990, sub-Plinian) → (2007, dome) (2014, eruptions from Kelud (Kelut) volcano, Indonesia. conducted petrological analyses products phase equilibria...
Since May 2018 till the end of 2021, Mayotte island has been locus a major submarine volcanic eruption characterized by offshore emission more than 6.5 km 3 basanitic magma. The occurred along WNW–ESE trending ridge on east flank where, in addition, several seemingly recent phonolitic bodies were also identified close to island. To define realistic scenarios magma ascent and potentially predict style an upcoming event, it is crucial have precise understanding plumbing system operating below...
Solubility experiments were performed on a trachyte and pantellerite from Pantelleria. The has SiO 2 =65.2 wt%, Al O 3 =15.2 wt% peralkaline index (P.I.=molar[(Na O+K O)/Al ])∼1 while the =72.2 =11 P.I.=1.3. in pressure range of 50–300 MPa at T=950°C for 50–200 T=850°C pantellerite. water content experimental glasses was determined by Karl Fischer titration, elemental analyser FT–IR spectroscopy. Water appears similar both compositions analogous conditions, varying ∼2.5 50 to ∼5.8 200 MPa....