Search Results - "Andrault, Denis"

Mantle rain toward the Earth's surface: A model for the internal cycle of water by Andrault, Denis, Bolfan-Casanova, Nathalie

“…The internal or deep water cycle controls the volume of the oceans at the surface of the Earth. The advent of subduction 2–3 billion years ago initiated the…”
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Formation of bridgmanite-enriched layer at the top lower-mantle during magma ocean solidification by Xie, Longjian, Yoneda, Akira, Yamazaki, Daisuke, Manthilake, Geeth, Higo, Yuji, Tange, Yoshinori, Guignot, Nicolas, King, Andrew, Scheel, Mario, Andrault, Denis

“…Thermochemical heterogeneities detected today in the Earth’s mantle could arise from ongoing partial melting in different mantle regions. A major open…”
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Direct Viscosity Measurement of Peridotite Melt to Lower‐Mantle Conditions: A Further Support for a Fractional Magma‐Ocean Solidification at the Top of the Lower Mantle by Xie, Longjian, Yoneda, Akira, Katsura, Tomoo, Andrault, Denis, Tange, Yoshinori, Higo, Yuji

“…As evidenced by isotope geochemistry, the persistence of primitive reservoirs indicates that the earth's lower mantle is likely to be heterogeneous. Such…”
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Melting of subducted basalt at the core-mantle boundary by Andrault, Denis, Pesce, Giacomo, Bouhifd, Mohamed Ali, Bolfan-Casanova, Nathalie, Hénot, Jean-Marc, Mezouar, Mohamed

“…The geological materials in Earth's lowermost mantle control the characteristics and interpretation of seismic ultra–low velocity zones at the base of the…”
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Stability and equation of state of face-centered cubic and hexagonal close packed phases of argon under pressure by Dewaele, Agnès, Rosa, Angelika D., Guignot, Nicolas, Andrault, Denis, Rodrigues, João Elias F. S., Garbarino, Gaston

“…The compression of argon is measured between 10 K and 296 K up to 20 GPa and and up to 114 GPa at 296 K in diamond anvil cells. Three samples conditioning are…”
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Electrical conductivity of lawsonite and dehydrating fluids at high pressures and temperatures by Manthilake, Geeth, Mookherjee, Mainak, Bolfan-Casanova, Nathalie, Andrault, Denis

“…Lawsonite is a calcium‐aluminum bearing hydrous silicate mineral with CaAl2Si2O7(OH)2.H2O stoichiometry. It is thermodynamically stable in the hydrated oceanic…”
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Kinetics and detectability of the bridgmanite to post-perovskite transformation in the Earth's D″ layer by Langrand, Christopher, Andrault, Denis, Durand, Stéphanie, Konôpková, Zuzana, Hilairet, Nadège, Thomas, Christine, Merkel, Sébastien

“…Bridgmanite, the dominant mineral in the Earth’s lower mantle, crystallizes in the perovskite structure and transforms into post-perovskite at conditions…”
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In situ X-ray diffraction of silicate liquids and glasses under dynamic and static compression to megabar pressures by Morard, Guillaume, Hernandez, Jean-Alexis, Guarguaglini, Marco, Bolis, Riccardo, Benuzzi-Mounaix, Alessandra, Vinci, Tommaso, Fiquet, Guillaume, Baron, Marzena A., Shim, Sang Heon, Ko, Byeongkwan, Gleason, Arianna E., Mao, Wendy L., Alonso-Mori, Roberto, Lee, Hae Ja, Nagler, Bob, Galtier, Eric, Sokaras, Dimosthenis, Glenzer, Siegfried H., Andrault, Denis, Garbarino, Gaston, Mezouar, Mohamed, Schuster, Anja K., Ravasio, Alessandra

“…Properties of liquid silicates under high-pressure and high-temperature conditions are critical for modeling the dynamics and solidification mechanisms of the…”
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Cosmochemical fractionation by collisional erosion during the Earth’s accretion by Boujibar, Asmaa, Andrault, Denis, Bolfan-Casanova, Nathalie, Bouhifd, Mohamed Ali, Monteux, Julien

“…Early in the Solar System’s history, energetic collisions of differentiated bodies affected the final composition of the terrestrial planets through partial…”
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Dehydration of chlorite explains anomalously high electrical conductivity in the mantle wedges by Manthilake, Geeth, Bolfan-Casanova, Nathalie, Novella, Davide, Mookherjee, Mainak, Andrault, Denis

“…Mantle wedge regions in subduction zone settings show anomalously high electrical conductivity (~1 S/m) that has often been attributed to the presence of…”
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Synthesis of superhard cubic BC2N by Solozhenko, Vladimir L., Andrault, Denis, Fiquet, Guillaume, Mezouar, Mohamed, Rubie, David C.

“…Cubic BC2N was synthesized from graphite-like BC2N at pressures above 18 GPa and temperatures higher than 2200 K. The lattice parameter of c-BC2N at ambient…”
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Topologically Ordered Amorphous Silica Obtained from the Collapsed Siliceous Zeolite, Silicalite-1-F: A Step toward “Perfect” Glasses by Haines, Julien, Levelut, Claire, Isambert, Aude, Hébert, Philippe, Kohara, Shinji, Keen, David A, Hammouda, Tahar, Andrault, Denis

“…A dense amorphous form of silica was prepared at high pressure from the highly compressible, siliceous zeolite, silicalite-1-F. Reverse Monte Carlo modeling of…”
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Evaluation of (Mg,Fe) partitioning between silicate perovskite and magnesiowustite up to 120 GPa and 2300 K by Andrault, Denis

“…The (Mg,Fe) partition coefficients between Al‐(Mg,Fe)SiO3 perovskite (Pv) and (Mg,Fe)O magnesiowustite (Mw) were inferred from Pv and Mw volumes measured by…”
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X-ray diffraction from stishovite under nonhydrostatic compression to 70GPa: Strength and elasticity across the tetragonal→orthorhombic transition by Singh, Anil K., Andrault, Denis, Bouvier, Pierre

“…► X-ray diffraction studies of stishovite under nonhydrostatic compression. ► Tetragonal→orthorhombic transition starts at much lower pressure than under…”
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Comment on: Melting behavior of SiO2 up to 120 GPa (Andrault et al. 2020) by Andrault, Denis, Pison, L., Morard, G., Garbarino, G., Mezouar, M., Bouhifd, M. A., Kawamoto, T.

“…The additional work we have done using our new laser heating in the diamond anvil cell system since the publication of Andrault et al. (Phys Chem Mineral…”
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Equations of state of Na–K–Al host phases and implications for MORB density in the lower mantle by Guignot, Nicolas, Andrault, Denis

“…We report equations of state (EoS) of two important silicate phases known to store Na, K, and Al, at pressures and temperatures prevailing in the Earth’s lower…”
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Compressibility of Ca3Al2Si3O12 perovskite up to 55 GPa by Gréaux, Steeve, Andrault, Denis, Gautron, Laurent, Bolfan-Casanova, Nathalie, Mezouar, Mohamed

“…Compressibility of perovskite-structured Ca 3 Al 2 Si 3 O 12 grossular (GrPv) was investigated at high pressure and high temperature by means of…”
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Pressure-Induced Landau-Type Transition in Stishovite by Andrault, Denis, Fiquet, Guillaume, Guyot, François, Hanfland, Michael

“…A Rietveld structural analysis of stishovite, with angle-dispersive x-ray diffraction synchrotron source at the European Synchrotron Radiation Facility,…”
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Equation of state of lower mantle (Al,Fe)-MgSiO3 perovskite by Andrault, Denis, Bolfan-Casanova, Nathalie, Guignot, Nicolas

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Disproportionation of Fe2+ in Al-free silicate perovskite in the laser heated diamond anvil cell as recorded by electron probe microanalysis of oxygen by Fialin, Michel, Catillon, Gilles, Andrault, Denis

“…Experimental evidence is reported for Fe 2+ disproportionation in Al-free perovskite (Pv), when submitted to large temperature gradients (i.e., under…”
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