Search Results - "Philippe de Parseval"
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In situ probing of the present-day zircon-bearing magma chamber at Krafla, Northeastern Iceland
Published in Frontiers in earth science (Lausanne) (16-11-2023)“…Active felsic magmatism has been rarely probed in situ by drilling but one recent exception is quenched rhyolite sampled during the 2009 Iceland Deep Drilling…”
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A New View on the Petrogenesis of the Oman Ophiolite Chromitites from Microanalyses of Chromite-hosted Inclusions
Published in Journal of petrology (01-12-2012)“…To decipher the petrogenesis of chromitites from the Moho Transition Zone of the Cretaceous Oman ophiolite, we carried out detailed scanning electron…”
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Study of the Eutectoid Transformation in Nodular Cast Irons in Relation to Solidification Microsegregation
Published in Metallurgical and materials transactions. A, Physical metallurgy and materials science (01-11-2016)“…Eutectoid transformation in cast irons may proceed in the stable or the metastable systems giving ferrite and graphite for the former and pearlite for the…”
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Successive phases of serpentinization and carbonation recorded in the Sivas Ophiolite (Turkey), from oceanic crust accretion to post-obduction alteration
Published in Bulletin de la Société géologique de France (2022)“…The ophiolite of Sivas (Turkey) was studied in order to define the chronology of different alteration events related to a series of serpentinization and…”
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Multiple Generations of Wolframite Mineralization in the Echassieres District (Massif Central, France)
Published in Minerals (Basel) (01-10-2019)“…The Echassières district in central France contains complex rare-element ore deposits, whose formation is related to exotic igneous events and several…”
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Highly explosive 2010 Merapi eruption: Evidence for shallow-level crustal assimilation and hybrid fluid
Published in Journal of volcanology and geothermal research (01-07-2013)“…The processes responsible for the highly explosive events at Merapi, Central Java, Indonesia have been investigated through a petrological, mineralogical and…”
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Processes controlling the 2010 Eyjafjallajökull explosive eruption
Published in Journal of Geophysical Research: Solid Earth (01-05-2012)“…To constrain the temporal evolution of the fluid‐magma system responsible for the 2010 Eyjafjallajökull eruption (20 March to 20 May, 2010, Southern Iceland),…”
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Lead isotope signatures of Kerguelen plume-derived olivine-hosted melt inclusions: Constraints on the ocean island basalt petrogenesis
Published in Lithos (01-06-2014)“…The nature of magmatic sources reflected by isotopic composition of the ocean island basalt (OIB) remains an on-going question in igneous geochemistry. To…”
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Hydrated Peridotite – Basaltic Melt Interaction Part I: Planetary Felsic Crust Formation at Shallow Depth
Published in Frontiers in earth science (Lausanne) (28-05-2021)“…Current theories suggest that the first continental crust on Earth, and possibly on other terrestrial planets, may have been produced early in their history by…”
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How Does Nodular Chromite Nucleate and Grow? An Integrated Microstructural and Petrological Approach
Published in Journal of petrology (01-07-2024)“…Nodular chromite ore deposits are found in ophiolites and crop out in structures interpreted as former dykes. Most of them are transposed parallel to the…”
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Mica trace-element signatures: Highlighting superimposed W-Sn mineralizations and fluid sources
Published in Chemical geology (30-06-2022)“…In the Echassières district of the French Massif Central, occur several outstanding magmatic/hydrothermal systems enriched in strategic metals, such as the…”
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Fluorine-controlled composition of biotite in granulites of Madagascar: the effect of fluorine on thermometry of biotite–garnet gneisses
Published in Contributions to mineralogy and petrology (01-09-2019)“…Because of the strong preference of fluorine (F) for “hydrous” magnesian silicate minerals, the temperature T (0F) given by the reaction (Bi–Gt) of Fe–Mg…”
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Low-temperature alteration of monazite: Fluid mediated coupled dissolution–precipitation, irradiation damage, and disturbance of the U–Pb and Th–Pb chronometers
Published in Chemical geology (10-11-2012)“…Low-temperature alteration of monazite is documented in three centimeter-sized monazite crystals from Norway (Arendal), Madagascar (Ambato), and Sri Lanka. The…”
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14
Secondary fluorescence effects in microbeam analysis and their impacts on geospeedometry and geothermometry
Published in Chemical geology (25-06-2018)“…Characteristic and bremsstrahlung X-ray emission during electron-specimen interactions in electron microprobe (EPMA) and scanning electron microscope (SEM)…”
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Latitudinal and Longitudinal Patterns of Exhumation in the Andes of North‐Central Chile
Published in Tectonics (Washington, D.C.) (01-09-2018)“…New thermochronometric data provide evidence for an along‐strike diachronous building of the Andes in north‐central Chile (28.5–32°S). Geochronological (U‐Pb…”
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Formation and deformation of pyrite and implications for gold mineralization in the El Callao District, Venezuela
Published in Economic geology and the bulletin of the Society of Economic Geologists (01-03-2014)“…The El Callao mining district is the most important gold-producing region in Venezuela. It is hosted in the Paleoproterozoic Guasipati-El Callao greenstone…”
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The giant monazite crystals from Manangotry (Madagascar)
Published in Chemical geology (05-05-2018)“…The Manangotry area in the South-East of Madagascar is famous for its giant monazite crystals. The studied occurrence is an outcrop near the Manangotry pass,…”
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Succession of Permian and Mesozoic metasomatic events in the eastern Pyrenees with emphasis on the Trimouns talc–chlorite deposit
Published in International journal of earth sciences : Geologische Rundschau (01-04-2016)“…Recent studies proposing pre-orogenic mantle exhumation models have helped renew the interest of the geosciences community in the Pyrenees, which should be now…”
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Formation of the Nkob talc deposit by contact metamorphism and fluid infiltration into siliceous dolostones (Moroccan Anti-Atlas)
Published in Ore geology reviews (01-01-2022)“…[Display omitted] •The Nkob talc deposit formed by contact metamorphism and hydrothermalism in siliceous dolostone.•Olivine and phlogopite formed during the…”
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Fluid-mediated alteration of (Y,REE,U,Th)–(Nb,Ta,Ti) oxide minerals in granitic pegmatite from the Evje-Iveland district, southern Norway
Published in Mineralogy and petrology (01-10-2016)“…We document the textural relations and chemical composition of (Y,REE,U,Th)–(Nb,Ta,Ti) oxide minerals in a granitic pegmatite from the Evje-Iveland district,…”
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