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Determination of carbon isotopic fractionation coefficieint between core and mantle

Research Project

Project/Area Number 20H01994
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 17040:Solid earth sciences-related
Research InstitutionEhime University (2021-2023)
Okayama University (2020)

Principal Investigator

Kuwahara Hideharu  愛媛大学, 地球深部ダイナミクス研究センター, 助教 (50505394)

Co-Investigator(Kenkyū-buntansha) Madhusoodhan SatishKumar (M Satish‐Kumar)  新潟大学, 自然科学系, 教授 (50313929)
伊藤 正一  京都大学, 理学研究科, 准教授 (60397023)
土屋 卓久  愛媛大学, 地球深部ダイナミクス研究センター, 教授 (70403863)
出倉 春彦  愛媛大学, 地球深部ダイナミクス研究センター, 講師 (90700146)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2023: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Keywords炭素 / 同位体分別 / 核 / マントル / マグマオーシャン / 金属核 / 同位体比 / 分配 / 元素分配
Outline of Research at the Start

本申請課題では①金属鉄-ケイ酸塩液相間、ならびに②液体金属鉄-炭酸塩間のマントル深部条件における炭素同位体分別係数を世界に先駆けて決定する。炭素同位体分別係数の温度・圧力依存性に関して得られる定量データに基づき、地球化学上の大きな未解決問題である「始原天体よりも13Cに富む地球マントルの炭素同位体比の成因」、そして「地球深部由来の海洋地殻物質を含む12Cに富む炭化物の起源」に対し、地球史を通じた核-マントル相互作用の観点から統一的な理解を目指す。本研究によって、惑星内部における炭素安定同位体の空間的分布およびその時間的進化に関する理解が大きく進展することが期待される。

Outline of Final Research Achievements

We experimentally investigated carbon isotope fractionation between metallic core and mantle during planetary differentiation (3 GPa, 1600-1800°C) to investigate the origin of the differences in carbon isotope ratios between chondrites and terrestrial planets. We also optimized experimental and analytical methods to minimize the effect of contamination during experiments and analysis. The preliminary results showed that 13C is enriched in metallic iron and 12C is enriched in silicate. This result suggests that the mantle becomes enriched in 12C than in chondrites.

Academic Significance and Societal Importance of the Research Achievements

我々の実験から、金属核-マントル間の化学的相互作用によって、炭素同位体分別が起こりうることが示唆された。炭素は地球生命の主要構成元素であり、同位体比からその起源を明らかにすることは大気や生命を構成する炭素がどこから、どのように地球に供給されたのか、といった根源的な問いに関する理解の手助けになることが期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (75 results)

All 2024 2023 2022 2021 2020

All Journal Article (39 results) (of which Int'l Joint Research: 25 results,  Peer Reviewed: 39 results,  Open Access: 23 results) Presentation (35 results) (of which Int'l Joint Research: 9 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Experimental investigation of first-row transition elements partitioning between olivine and silicate melt: Implications for lunar basalt formation2024

    • Author(s)
      Jing Jie-Jun、Su Ben-Xun、Berndt Jasper、Kuwahara Hideharu、van Westrenen Wim
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 373 Pages: 211-231

    • DOI

      10.1016/j.gca.2024.03.028

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Partial melt composition of enstatite chondritic mantle around the rheological transition at 23 GPa: Implications for the chemical differentiation of the Earth's mantle2024

    • Author(s)
      Kuwahara Hideharu
    • Journal Title

      Physics of the Earth and Planetary Interiors

      Volume: 346 Pages: 107123-107123

    • DOI

      10.1016/j.pepi.2023.107123

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Atomic-scale study of intercrystalline (Mg,Fe)O in planetary mantles: Mechanics and thermodynamics of grain boundaries under pressure2024

    • Author(s)
      S. Ritterbex, T. Tsuchiya, M. Drury, and O. Plumper
    • Journal Title

      Journal of Geophysical Research

      Volume: - Issue: 5

    • DOI

      10.1029/2023jb028375

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hydrogen diffusion in apatite parallel to the c-axis under vapor flow2024

    • Author(s)
      Yoshimoto Chikashi、Itoh Shoichi、Sakaguchi Isao
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 58 Issue: 1 Pages: 1-8

    • DOI

      10.2343/geochemj.GJ24001

    • ISSN
      0016-7002, 1880-5973
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A new method for quantitative analysis of total water contents and estimating molecular water and hydroxyl contents in rhyolitic glasses by SIMS2024

    • Author(s)
      Suzumura Akimasa、Okumura Satoshi、Yoshimoto Chikashi、Itoh Shoichi
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 58 Issue: 3 Pages: e1-e7

    • DOI

      10.2343/geochemj.GJ24008

    • ISSN
      0016-7002, 1880-5973
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pervasive aqueous alteration in the early Solar System revealed by potassium isotopic variations in Ryugu samples and carbonaceous chondrites2024

    • Author(s)
      Hu Yan、et al.
    • Journal Title

      Icarus

      Volume: 409 Pages: 115884-115884

    • DOI

      10.1016/j.icarus.2023.115884

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Strong effect of liquid Fe?S on elastic wave velocity of olivine aggregate: Implication for the low velocity anomaly at the base of the lunar mantle2023

    • Author(s)
      Kono Yoshio、Kuwahara Hideharu、Greaux Steeve、Rivers Mark L.、Wang Yanbin、Higo Yuji、Mitsu Keisuke、Kondo Nozomi
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 618 Pages: 118287-118287

    • DOI

      10.1016/j.epsl.2023.118287

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Partitioning of Fe2+ and Fe3+ between bridgmanite and silicate melt: Implications for redox evolution of the Earth's mantle2023

    • Author(s)
      Kuwahara Hideharu、Nakada Ryoichi
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 615 Pages: 118197-118197

    • DOI

      10.1016/j.epsl.2023.118197

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of grain size on amorphization mechanism and kinetics of bridgmanite in shocked meteorites2023

    • Author(s)
      Nishi Masayuki、Jin Si、Kawano Katsutoshi、Kuwahara Hideharu、Yamada Akihiro、Kawaguchi Shogo、Mori Yuki、Sakaiya Tatsuhiro、Kondo Tadashi
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 10 Issue: 1 Pages: 41-41

    • DOI

      10.1186/s40645-023-00572-0

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ab initio lattice thermal conductivity of (Mg,Fe)O ferropericlase at the Earth’s lower mantle pressure and temperature2023

    • Author(s)
      Dekura Haruhiko、Tsuchiya Taku
    • Journal Title

      Journal of Physics: Condensed Matter

      Volume: 35 Issue: 30 Pages: 305402-305402

    • DOI

      10.1088/1361-648x/acce16

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Elemental and isotopic signatures of individual particles in chondrite matrix using inductively coupled plasma mass spectrometry2023

    • Author(s)
      Kurihara Kanoko、Numa Norika、Niki Sota、Akamune Mai、Nakazato Masaki、Yamashita Shuji、Itoh Shoichi、Hirata Takafumi
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 57 Issue: 5 Pages: e9-e16

    • DOI

      10.2343/geochemj.GJ23015

    • ISSN
      0016-7002, 1880-5973
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid Ryugu2023

    • Author(s)
      Nguyen Ann N. et al.
    • Journal Title

      Science Advances

      Volume: 9 Issue: 28

    • DOI

      10.1126/sciadv.adh1003

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sample2023

    • Author(s)
      Yokoyama Tetsuya、et al.
    • Journal Title

      Science Advances

      Volume: 9 Issue: 45

    • DOI

      10.1126/sciadv.adi7048

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Carbonate record of temporal change in oxygen fugacity and gaseous species in asteroid Ryugu2023

    • Author(s)
      Fujiya Wataru、et al.
    • Journal Title

      Nature Geoscience

      Volume: 16 Issue: 8 Pages: 675-682

    • DOI

      10.1038/s41561-023-01226-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hydrogen Isotopic Composition of Hydrous Minerals in Asteroid Ryugu2023

    • Author(s)
      Piani L., Nagashima K., Kawasaki N., Sakamoto N., Bajo K.-I., Yabuta H. et al.
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 946 Issue: 2 Pages: L43-L43

    • DOI

      10.3847/2041-8213/acc393

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Analysis of Cation Composition in Dolomites on the Intact Particles Sampled from Asteroid Ryugu2023

    • Author(s)
      Morita Mayu、et al.
    • Journal Title

      Analytical Chemistry

      Volume: 96 Issue: 1 Pages: 170-178

    • DOI

      10.1021/acs.analchem.3c03463

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Magnesium Isotope Composition of Samples Returned from Asteroid Ryugu2023

    • Author(s)
      Bizzarro Martin、et al.
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 958 Issue: 2 Pages: L25-L25

    • DOI

      10.3847/2041-8213/ad09d9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Neodymium‐142 deficits and samarium neutron stratigraphy of C‐type asteroid (162173) Ryugu2023

    • Author(s)
      Torrano Zachary A.、et al.
    • Journal Title

      Meteoritics & Planetary Science

      Volume: - Issue: 8 Pages: 1-17

    • DOI

      10.1111/maps.14109

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Carbon isotopic composition of solid carbon and C-H-O fluid produced through the decomposition of stearic acid under HP-HT condition2023

    • Author(s)
      Kawamura, H., Ohfuji, H., Satish-Kumar, M., Kiran, S. and Suzuki, A.
    • Journal Title

      High Pressure Research

      Volume: 44 Issue: 1 Pages: 38-52

    • DOI

      10.1080/08957959.2023.2297680

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Carbon isotopic composition of graphite in metamorphic rocks from Lützow-Holm Complex, East Antarctica: Implications for carbon geodynamic cycle in continental crust2023

    • Author(s)
      Satish-Kumar, M.
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 118 Issue: ANTARCTICA Pages: n/a

    • DOI

      10.2465/jmps.230401

    • ISSN
      1345-6296, 1349-3825
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Digging Deep into Interactions Between the Core and Mantle2023

    • Author(s)
      Nakagawa, T., Tsuchiya, T., Satish-Kumar, M. and Helffrich, G.
    • Journal Title

      Eos

      Volume: 104

    • DOI

      10.1029/2023eo235020

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hadean mantle oxidation inferred from melting of peridotite under lower-mantle conditions2023

    • Author(s)
      Kuwahara Hideharu、Nakada Ryoichi、Kadoya Shintaro、Yoshino Takashi、Irifune Tetsuo
    • Journal Title

      Nature Geoscience

      Volume: - Issue: 5 Pages: 461-465

    • DOI

      10.1038/s41561-023-01169-4

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ab Initio Molecular-Dynamics Study of Structural and Bonding Properties of Liquid Fe-Light-Element-O Systems Under High Pressure2022

    • Author(s)
      Ohmura Satoshi、Shimojo Fuyuki、Tsuchiya Taku
    • Journal Title

      Frontiers in Earth Science

      Volume: 10

    • DOI

      10.3389/feart.2022.873088

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Low Velocity Zones in the Martian Upper Mantle Highlighted by Sound Velocity Measurements2021

    • Author(s)
      Xu F.、Siersch N. C.、Greaux S.、Rivoldini A.、Kuwahara H.、Kondo N.、Wehr N.、Menguy N.、Kono Y.、Higo Y.、Plesa A.‐C.、Badro J.、Antonangeli D.
    • Journal Title

      Geophysical Research Letters

      Volume: 48 Issue: 19

    • DOI

      10.1029/2021gl093977

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Continuous measurement of ultrasonic elastic wave velocities, X-ray radiography and X-ray diffraction of Zr50Cu40Al10 metallic glass at high pressure and high temperature conditions2021

    • Author(s)
      Kono Yoshio、Higo Yuji、Greaux Steeve、Shibazaki Yuki、Yamada Rui、Kuwahara Hideharu、Kondo Nozomi
    • Journal Title

      High Pressure Research

      Volume: 41 Issue: 3 Pages: 219-232

    • DOI

      10.1080/08957959.2021.1941000

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hadal aragonite records venting of stagnant paleoseawater in the hydrated forearc mantle2021

    • Author(s)
      Oyanagi Ryosuke、Okamoto Atsushi、Satish-Kumar Madhusoodhan、Minami Masayo、Harigane Yumiko、Michibayashi Katsuyoshi
    • Journal Title

      Communications Earth & Environment

      Volume: 2 Issue: 1 Pages: 243-243

    • DOI

      10.1038/s43247-021-00317-1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rupture of wet mantle wedge by self-promoting carbonation2021

    • Author(s)
      Okamoto Atsushi、Oyanagi Ryosuke、Yoshida Kazuki、Uno Masaoki、Shimizu Hiroyuki、Satish-Kumar Madhusoodhan
    • Journal Title

      Communications Earth & Environment

      Volume: 2 Issue: 1 Pages: 151-151

    • DOI

      10.1038/s43247-021-00224-5

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sulfur, carbon and oxygen isotopic compositions of Newania carbonatites of India: implications for the mantle source characteristics2021

    • Author(s)
      Anupam BANERJEE, M. SATISH-KUMAR, Ramananda CHAKRABARTI
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 116 Issue: 3 Pages: 121-128

    • DOI

      10.2465/jmps.201130e

    • NAID

      130008065765

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A geochemical and isotopic perspective on tectonic setting and depositional environment of Precambrian meta-carbonate rocks in collisional orogenic belts2021

    • Author(s)
      Satish-Kumar, M., Shirakawa, M., Imura, A., Otsuji-Makino, N., Imanaka-Nohara, R., Malaviarachchi, S. P. K., Fitzsimons, I. C. W., Sajeev, K., Grantham, G. H., Windley, B. F., Hokada, T., Takahashi, T., Shimoda, G. & Goto, K. T.
    • Journal Title

      Gondwana Research

      Volume: - Pages: 163-204

    • DOI

      10.1016/j.gr.2021.03.013

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nearly carbon‐saturated magma oceans in planetary embryos during core formation2021

    • Author(s)
      Kuwahara Hideharu、Itoh Shoichi、Suzumura Akimasa、Nakada Ryoichi、Irifune Tetsuo
    • Journal Title

      Geophysical Research Letters

      Volume: - Issue: 10

    • DOI

      10.1029/2021gl092389

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Helium and Argon Partitioning Between Liquid Iron and Silicate Melt at High Pressure2021

    • Author(s)
      Xiong Zhihua、Tsuchiya Taku、Van Orman James A.
    • Journal Title

      Geophysical Research Letters

      Volume: 48 Issue: 3

    • DOI

      10.1029/2020gl090769

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Elasticity of nanocrystalline kyanite at high pressure and temperature from ultrasonic and synchrotron X-ray techniques2020

    • Author(s)
      N.A. Gaida, S. Gréaux, Y. Kono, H. Ohfuji, H.Kuwahara, N. Nishiyama, O. Beermann, T. Sasaki, K. Niwa, M. Hasegawa
    • Journal Title

      Journal of the American Ceramic Society

      Volume: 104 Issue: 1 Pages: 635-644

    • DOI

      10.1111/jace.17464

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Sound Velocities of Al‐Bearing Phase D up to 22 GPa and 1300 K2020

    • Author(s)
      Xu Chaowen、Greaux Steeve、Inoue Toru、Noda Masamichi、Sun Wei、Kuwahara Hideharu、Higo Yuji
    • Journal Title

      Geophysical Research Letters

      Volume: 47 Issue: 18

    • DOI

      10.1029/2020gl088877

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A New Era of High-Pressure Earth Science Opened by First Principles Computations2020

    • Author(s)
      土屋卓久
    • Journal Title

      The Review of High Pressure Science and Technology

      Volume: 30 Issue: 2 Pages: 140-155

    • DOI

      10.4131/jshpreview.30.140

    • NAID

      130007928824

    • ISSN
      0917-639X, 1348-1940
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Novel configurations of VN4 and VN4H defects in diamond platelets: Structure, Energetics and vibrational properties2020

    • Author(s)
      T. Gu; S. Ritterbex; T. Tsuchiya; W. Wang
    • Journal Title

      Diamond & Related Materials

      Volume: 108 Pages: 107957-107957

    • DOI

      10.1016/j.diamond.2020.107957

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Structures of liquid iron-light-element mixtures under high pressure2020

    • Author(s)
      S. Ohmura, T. Tsuchiya and F. Shimojo
    • Journal Title

      Physica Status Solodi B

      Volume: in press Issue: 11 Pages: 2000098-2000098

    • DOI

      10.1002/pssb.202000098

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ab Initio Study on the Lower Mantle Minerals2020

    • Author(s)
      Tsuchiya Taku, Tsuchiya Jun, Dekura Haruhiko, Ritterbex Sebastian
    • Journal Title

      Annual Review of Earth and Planetary Sciences

      Volume: 48 Issue: 1 Pages: 99-119

    • DOI

      10.1146/annurev-earth-071719-055139

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Equation of state of liquid iron under extreme conditions2020

    • Author(s)
      Y. Kuwayama, G. Morard, Y. Nakajima, K. Hirose, A.Q.R. Baron, S.I., Kawaguchi, T. Tsuchiya, D. Ishikawa, N. Hirano, Y. Ohishi
    • Journal Title

      Physcal Review Letters

      Volume: 124 Issue: 16 Pages: 165701-165701

    • DOI

      10.1103/physrevlett.124.165701

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Viscosity of hcp iron at Earth's inner core conditions from density functional theory2020

    • Author(s)
      Ritterbex Sebastian、Tsuchiya Taku
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1

    • DOI

      10.1038/s41598-020-63166-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Electrical Conductivity of Superionic Hydrated SiO2: Implications for High Conductivity Anomalies Beneath Subduction Zones2023

    • Author(s)
      Mako Inada, Yoshiyuki Okuda, Kei Hirose, Kenta Oka, Hideharu Kuwahara, Steeve Greaux
    • Organizer
      AGU 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 核-マントル境界における水と鉄の交換反応2023

    • Author(s)
      河野 克俊、西 真之、柿澤 翔、井上 徹、桑原 秀治、芳野 極、近藤 忠
    • Organizer
      第64回高圧討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 核・マントル境界における水と鉄の交換反応2023

    • Author(s)
      河野 克俊、西 真之、柿澤 翔、井上 徹、桑原 秀治、近藤 忠
    • Organizer
      日本鉱物科学会2023年年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Hf-W dating of zircon from mesosiderite with sintered standard2023

    • Author(s)
      Yuta Koyama, Yuji Sano, Naoto Takahata, Mizuho Koike, Makiko K. Haba, Sakata Shuhei, Hideharu Kuwahara, Tetsuo Irifune
    • Organizer
      Korea-Japan joint conference on the geochemical and cosmochemical application of microanalysis
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Iron-water exchange at the earth’s core-mantle boundary2023

    • Author(s)
      Katsutoshi Kawano, Masayuki Nishi, Sho Kakizawa, Toru Inoue, Hideharu Kuwahara, Tadashi Kondo
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Pressure and Composition Dependence of Elastic Wave Velocity of Al2O3-SiO2 Glasses2023

    • Author(s)
      Itaru Ohira, Yoshio Kono, Steeve Greaux, Nozomi M. Kondo, Hideharu Kuwahara, Sayako Inoue, Yuji Higo
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Hf and W partitioning between liquid metal and silicate melt calculated by first principle thermodynamic integration of molecular dynamics and the evolution of 182W isotope of the earth2023

    • Author(s)
      K. Suzuki, T. Tsuchiya
    • Organizer
      AGU 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 中性子回折と第一原理計算を用いたFeS Vの水素化挙動の探索2023

    • Author(s)
      高野将大, 鍵裕之, 森悠一郎, 青木勝敏, 柿澤翔, 佐野亜沙美, 飯塚理子, 土屋卓久
    • Organizer
      第64回高圧討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 第一原理計算に基づく鉄-ケイ酸塩間硫黄分配実験における不一致の解決2023

    • Author(s)
      伊藤慧, 土屋卓久
    • Organizer
      第64回高圧討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Nitrogen-carbon-argon features of the bulk silicate Earth established by deep core-mantle differentiation2023

    • Author(s)
      S. Huang, T. Tsuchiya
    • Organizer
      第64回高圧討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 第一原理鉱物物性額に基づくCMB熱流量モデリング2023

    • Author(s)
      出倉春彦, 土屋卓久
    • Organizer
      第64回高圧討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 第一原理計算から予測される高圧条件におけるがん鉄ケイ酸塩メルト中の鉄の電荷不均化反応と組成の影響2023

    • Author(s)
      北口 一志, 土屋 卓久
    • Organizer
      第64回高圧討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Missing nitrogen of the bulk silicate Earth established by deep core-mantle differentiation2023

    • Author(s)
      S. Huang, T. Tsuchiya
    • Organizer
      日本地球化学会 第70回年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 第一原理計算による溶融鉄と珪酸塩メルト間の Hfと W の分配と地球の182W同位体進化2023

    • Author(s)
      鈴木勝彦, 土屋卓久
    • Organizer
      日本地球化学会 第70回年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 中性子回折と分子動力学法を用いたFeSVの水素化挙動の探索2023

    • Author(s)
      高野 将大, 鍵 裕之, 森 悠一郎, 青木 勝敏, 柿澤 翔, 佐野 亜沙美, 飯塚 理子, 土屋 卓久
    • Organizer
      日本鉱物科学会2023年年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Effects of light elements on the water partitioning between liquid metal and molten silicate under high pressure and temperature2023

    • Author(s)
      T. Tsuchiya
    • Organizer
      The Joint 28th AIRAPT and 60th EHPRG International Conference 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] First-principles calculations and neutron diffraction measurements on hydrogenation of FeS at high-pressure conditions2023

    • Author(s)
      高野 将大, 鍵 裕之, 森 悠一郎, 柿澤 翔, 佐野 亜沙美, 土屋 卓久
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 第一原理熱力学積分法による氷超イオン相の自由エネルギー計算2023

    • Author(s)
      土屋 旬, 土屋 卓久
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 第一原理計算から予測される 含鉄ケイ酸塩メルトにおける鉄の電荷不均化反応2023

    • Author(s)
      北口 一志, 土屋 卓久
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Ab initio lattice thermal conductivity of pyrolytic lower mantle to infer the core-mantle boundary heat flow2023

    • Author(s)
      出倉 春彦, 土屋 卓久
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Sulfur partitioning between light element-bearing liquid iron and molten silicate2023

    • Author(s)
      伊藤 慧, 土屋 卓久
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 第一原理計算による溶融鉄-ケイ酸塩メルト間でのHf-W分配と182W同位体進化2023

    • Author(s)
      鈴木 勝彦, 土屋 卓久
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Effects of light elements on the water partitioning between liquid metal and molten silicate under high pressure and temperature2023

    • Author(s)
      土屋 卓久, 伊藤 慧, 北口 一志, H. Shengxuan
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] The Earth’s nitrogen budget set by core-mantle differentiation2023

    • Author(s)
      S. Huang, T. Tsuchiya
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Petrography of the cm-sized dark clast in NWA7678 reduced CV3 chondrite2023

    • Author(s)
      Takumi Sakurai, Shoichi Itoh
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Determination of hydrogen self-diffusion coefficients of fluorapatite using a flow-type steam diffusion reactor2023

    • Author(s)
      Chikashi Yoshimoto, Isao Sakaguchi , Shoichi Itoh
    • Organizer
      JpGU 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Development of the analysis method for selectivel y estimating molecular H2O and hydroxyl s contents in rhyolitic glass using secondary ion mass spectrometry2023

    • Author(s)
      Akimasa Suzumura, Satoshi Okumura, Chikashi Yoshimoto, Shoichi Itoh
    • Organizer
      Water-Rock Interaction 17
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identification of aqueous alteration area in carbonaceous chondrites with Uranium distribution by LA-ICP-MS2023

    • Author(s)
      Shoichi Itoh, Yuki Uchida, Youhei Igami, Takaaki Noguchi, Takafumi Hirata
    • Organizer
      Water-Rock Interaction 17
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Oxidizing magma ocean due to redox disproportionation of Fe2+ at high pressures and implications for the atmosphere2022

    • Author(s)
      Hideharu Kuwahara, Ryoichi Nakada, Shintaro Kadoya, Takashi Yoshino, Tetsuo Irifune
    • Organizer
      Japan Geoscience Union Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Thermal conductivity of hydrous stishovite and DHMS minerals; Implications for seismicity along Japanese trench subduction zone2022

    • Author(s)
      Bill Sweidan, Kenji Ohta, Yoshiyuki Okuda, Steeve Greaux, Manabu Kodama, Takashi Yagi, Hideharu Kuwahara
    • Organizer
      AGU Fall Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 下部マントル条件下での天然含水玄武岩の相関係2022

    • Author(s)
      石川 裕太, 入舩 徹男, 桑原 秀治, 國本 健広
    • Organizer
      Japan Geoscience Union Meeting 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 下部マントル領域における天然含水玄武岩の相関係2022

    • Author(s)
      石川 裕太, 入舩 徹男, 桑原 秀治, 國本 健広
    • Organizer
      第63回高圧討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高温高圧下における含水シリカの電気伝導度 ~超イオン状態の実験的証拠~2022

    • Author(s)
      稲田 真子, 奥田 善之, 岡 健太, 桑原 秀治, Steeve Greaux, 廣瀬 敬
    • Organizer
      第63回高圧討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Ab initio computation on the element distribution between liquid metal and molten silicate2021

    • Author(s)
      T. Tsuchiya
    • Organizer
      ACHPR-10
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] H/D partitioning between forsterite, wadsleyite and ringwoodite : ab initio free energy calculation2021

    • Author(s)
      J. Tsuchiya and T. Tsuchiya
    • Organizer
      日本地球惑星科学連合2021年大会
    • Related Report
      2021 Annual Research Report
  • [Book] 地球・惑星・生命(編:日本地球惑星科学連合)2020

    • Author(s)
      土屋卓久
    • Total Pages
      280
    • Publisher
      東京大学出版
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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