Title :

The Thermal Conductivity of Bridgmanite at Lower Mantle Conditions Using a Multi‐Technique Approach

Author(s) :

Edmund, Eric [Auteur]
Carnegie Earth and Planets Laboratory
Chuvashova, Irina [Auteur]
Carnegie Earth and Planets Laboratory
Konôpková, Zuzana [Auteur]
European XFEL Gmbh
Husband, Rachel [Auteur]
Deutsches Elektronen-Synchrotron [Hamburg] [DESY]
Strohm, Cornelius [Auteur]
Deutsches Elektronen-Synchrotron [Hamburg] [DESY]
Appel, Karen [Auteur]
European XFEL Gmbh
Bähtz, Carsten [Auteur]
European XFEL Gmbh
Ball, Orianna [Auteur]
University of Edinburgh [Edin.]
Bouffetier, Victorien [Auteur]
European XFEL Gmbh
Brugman, Kara [Auteur]
Carnegie Earth and Planets Laboratory
Buakor, Khachiwan [Auteur]
European XFEL Gmbh
Chantel, Julien [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Chariton, Stella [Auteur]
Center for Advanced Radiation Sources [University of Chicago] [CARS]
Duff, Matthew [Auteur]
University of Edinburgh [Edin.]
Dwivedi, Anand [Auteur]
European XFEL Gmbh
Glazyrin, Konstantin [Auteur]
Deutsches Elektronen-Synchrotron [Hamburg] [DESY]
Hosseini‐Saber, S. M. A. [Auteur]
Deutsches Elektronen-Synchrotron [Hamburg] [DESY]
Jaisle, Nicolas [Auteur]
Université Savoie Mont Blanc [USMB [Université de Savoie] [Université de Chambéry]]
Laurus, Torsten [Auteur]
Deutsches Elektronen-Synchrotron [Hamburg] [DESY]
Li, Xiang [Auteur]
Westfälische Wilhelms-Universität Münster = University of Münster [WWU]
Masani, Bernhard [Auteur]
University of Edinburgh [Edin.]
McHardy, James [Auteur]
University of Edinburgh [Edin.]
McMahon, Malcolm [Auteur]
University of Edinburgh [Edin.]
Merkel, Sébastien [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Mohrbach, Katharina [Auteur]
Deutsches Elektronen-Synchrotron [Hamburg] [DESY]
Mondal, Anshuman [Auteur]
Deutsches Elektronen-Synchrotron [Hamburg] [DESY]
Morard, Guillaume [Auteur]
Université Savoie Mont Blanc [USMB [Université de Savoie] [Université de Chambéry]]
Prakapenka, Vitali B. [Auteur]
University of Chicago
Prescher, Clemens [Auteur]

Ryu, Young‐Jay [Auteur]
University of Chicago
Schwinkendorf, Jan‐Patrick [Auteur]
European XFEL Gmbh
Tang, Minxue [Auteur]
Deutsches Elektronen-Synchrotron [Hamburg] [DESY]
Younes, Zena [Auteur]
University of Edinburgh [Edin.]
Sanchez‐Valle, Carmen [Auteur]
Westfälische Wilhelms-Universität Münster = University of Münster [WWU]
Liermann, Hanns‐Peter [Auteur]
Deutsches Elektronen-Synchrotron [Hamburg] [DESY]
Badro, James [Auteur]
Université Paris Cité [UPCité]
Lin, Jung‐Fu [Auteur]
University of Texas at Austin [Austin]
McWilliams, R. Stewart [Auteur]
University of Edinburgh [Edin.]
Goncharov, Alexander F. [Auteur]
Carnegie Institution for Science

Journal title :

Journal of Geophysical Research: Solid Earth

Abbreviated title :

JGR Solid Earth

Volume number :

129

Pages :

e2024JB028823

Publisher :

American Geophysical Union (AGU)

Publication date :

2024-06

HAL domain(s) :

Chimie/Matériaux

English abstract : [en]

The thermal conductivity of bridgmanite, the primary constituent of the Earth's lower mantle, has been investigated using diamond anvil cells at pressures up to 85 GPa and temperatures up to 3,100 K. We report the results ...
Show more >The thermal conductivity of bridgmanite, the primary constituent of the Earth's lower mantle, has been investigated using diamond anvil cells at pressures up to 85 GPa and temperatures up to 3,100 K. We report the results of time‐domain optical laser flash heating and X‐ray Free Electron Laser heating experiments from a variety of bridgmanite samples with different Al and Fe contents. The results demonstrate that Fe or Fe,Al incorporation in bridgmanite reduces thermal conductivity by about 50% in comparison to end‐member MgSiO3 at the pressure‐temperature conditions of Earth's lower mantle. The effect of temperature on the thermal conductivity at 28–60 GPa is moderate, well described as , where a is 0.2–0.5. The results yield thermal conductivity of 7.5–15 W/(m × K) in the thermal boundary layer of the lowermost mantle composed of Fe,Al‐bearing bridgmanite.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Matériaux Terrestres et Planétaires

Submission date :

2024-06-12T08:29:55Z
2024-06-12T11:23:23Z