地球マントル中でのCOH流体の相平衡と地球深部の揮発性元素サイクル

• Project/Area Number: 22540486
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: Tohoku University
• Principal Investigator: LITASOV Konstant (LITASOV Konstantin / リタソフ コンスタンチン) 東北大学, 理学(系)研究科(研究院), 准教授 (80374916)
• Project Period (FY): 2010-04-01 – 2013-03-31
• Project Status: Declined (Fiscal Year 2012)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 地殻・マントル・核 / 高圧揮発性元素 / 岩鉱・鉱物・鉱床学

Research Abstract

本研究の主要な結果として(1)3-16GPaの圧力条件下における流体と共存しているペリドタイトとエクロジャイトの研究(2)3-21GPaの圧力条件下におけるアルカリ炭酸塩のソリダスの研究の2つが挙げられる。
(1)3-16GPa、1200-1600℃における流体と共存しているペリドタイトとエクロジャイト相平衡
酸素分圧を制御すらためにMo-MoO2もしくはFe-FeOカプセルを使用し、マルチアンビルプレスで高温高圧実験を行った。試料の融解は回収試料の急冷組織から判断し、流体+ペリドタイトのソリダスを3GPaで1200℃、6GPaで1700℃と決定した。また、流体+エクロジャイトのソリダスを3GPaで1100℃、6GPaで1600℃と決定した。これらはより酸化的な条件下におけるソリダスより300-500℃高い温度である。従って、酸化還元状態の違いによって、流体の組成に影響を及ぼし、ペリドタイトやエクロジャイトのソリダスを変化させることが明らかになった。地球深部において様々な境界が存在しているが、それらにおいて酸化還元状態の違いに起因する溶融が起こることを示唆している。
(2)炭酸塩ペリドタイトとエクロジャイトの相平衡
カリウムまたはナトリウムを含む炭酸塩系のソリダスと相平衡を決定し、アルカリ炭酸塩の安定性とマントル融解に対する影響、炭素輸送に関して議論した。高温高圧実験はマルチアンビルプレスを用いて3-21GPa、750-1400℃の条件下で行われた。ソリダスは3GPaで750℃、6GPaで850℃であったが、10GPaでは1150℃まで上昇した。沈み込み帯の温度分布と比較すると、アルカリ炭酸塩の安定領域が増加したことが明らかになった。また、沈み込んだアルカリ炭酸塩が溶融するのは、マントル遷移層に対応する深さであった、そこで炭酸塩マグマが生成され、上部マントル中を通って地表まで上昇すると考えられる。

Research Products

• [Journal Article] Systematic study of hydrogen incorporation into Fe-free wadsleyite (2011)
  • Author(s): Litasov KD., Shatskiy A., Ohtani E., Katsura T.
  • Journal Title: Physics and Chemistry of Minerals Volume: 38 Issue: 1 Pages: 75-84
  • DOI: 10.1007/s00269-010-0382-3
  • Peer Reviewed
• [Journal Article] Crystal chemistry of sodium in the Earth's interior : The structure of Na_2MgSi_5O_<12> synthesized at 17.5GPa and 1700℃ (2011)
  • Author(s): Bindi, L., Dymshits, A.M., Bobrov, A.V., Litasov, K.D., Shatskiy, A.F., Ohtani, E., Litvin, Yu.A.
  • Journal Title: American Mineralogist Volume: 96 Issue: 2-3 Pages: 447-460
  • DOI: 10.2138/am.2011.3716
  • Peer Reviewed
• [Journal Article] Pressless split-sphere apparatus equipped with scaled-up Kawai-cell for mineralogical studies at 10-20GPa (2011)
  • Author(s): Shatskiy, A., Borzdov, Y.M., Litasov, K.D., Ohtani, E., Khokhryakov, A.F., Palyanov, Y.N., Katsura, T.
  • Journal Title: American Mineralogist Volume: 96 Pages: 541-548
  • Peer Reviewed
• [Journal Article] Phase relations and melting in the peridotite-H_2O-CO_2 and eclogiteH_2O-CO_2 systems at pressures of 3-27GPa (2011)
  • Author(s): Litasov, K.D., Shatskiy, A.F., Pokhilenko, N.P.
  • Journal Title: Doklady Earth Science Volume: 437 Issue: 2 Pages: 498-502
  • DOI: 10.1134/s1028334x11040143
  • Peer Reviewed
• [Journal Article] Physicochemical conditions for melting in the Earth's mantle containing a C-O-H fluid (from experimental data) (2011)
  • Author(s): Litasov, K.D.
  • Journal Title: Russian Geology and Geophysics Volume: 52(5) Issue: 5 Pages: 475-492
  • DOI: 10.1016/j.rgg.2011.04.001
  • Peer Reviewed
• [Journal Article] High pressure generation using scaled-up Kawai-cell (2011)
  • Author(s): Shatskiy, A., Katsura, T., Litasov, K.D., Shcherbakova, A.V., Borzdov, Y.M., Yamazaki, D., Yoneda, A., Ohtani, E., Ito, E.
  • Journal Title: Physics of the Earth and Planetary Interiors Volume: 189 Pages: 92-108
  • Peer Reviewed
• [Journal Article] Crossover from melting to dissociation of CO_2 under pressure : Implications for the lower mantle (2011)
  • Author(s): Litasov, K.D., Goncharov, A.F., Hemley, R.J.
  • Journal Title: Earth and Planetary Science Letters Volume: 309 Issue: 3-4 Pages: 318-323
  • DOI: 10.1016/j.epsl.2011.07.006
  • Peer Reviewed
• [Journal Article] Effect of Al_2O_3 on water solubility in periclase and ferropericlase at 25 GPa (2010)
  • Author(s): Litasov, K.D.
  • Journal Title: Russian Geology and Geophysics Volume: 51 Pages: 644-649
  • Peer Reviewed
• [Journal Article] The solidus of carbonated eclogite in the system CaO-Al_2O_3-MgO-SiO_2-Na_2O-CO_2 to 32 GPa and carbonatite liquid in the deep mantle (2010)
  • Author(s): Litasov, K.D., Ohtani, E.
  • Journal Title: Earth and Planetary Science Letters Volume: 295 Pages: 115-126
  • Peer Reviewed
• [Journal Article] Effect of oxygen fugacity on the H_2O storage capacity of forsterite in the carbon-saturated systems (2010)
  • Author(s): Sokol, A.G., Palyanov, Y.N., Kupriyanov, I.N., Litasov, K.D., Polovinka, M.P.
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 74 Pages: 4793-4806
  • Peer Reviewed
• [Journal Article] Performance of semi-sintered ceramics as pressure transmitting media up to 30 GPa (2010)
  • Author(s): Shatskiy, A., Litasov, K.D., Terasaki, H., Katsura, T., Ohtani, E.
  • Journal Title: High Pressure Research Volume: 30 Pages: 443-450
  • Peer Reviewed
• [Journal Article] Pressure-volume-temperature equation of state of tungsten carbide to 32 GPa and 1673 K (2010)
  • Author(s): Litasov, K.D., Shatskiy, A., Fei, Y., Suzuki, A., Ohtani, E., Funakoshi, K.
  • Journal Title: Journal of Applied Physics Volume: 74
  • Peer Reviewed
• [Journal Article] Experimental constraints on the role of chloride in the origin and evolution of kimberlitic magma (2010)
  • Author(s): Litasov, K.D., Sharygin, I.S., Shatskiy, A.F., Ohtani, E., Pokhilenko, N.P.
  • Journal Title: Doklady Earth Science Volume: 435 Pages: 1648-1653
  • Peer Reviewed
• [Journal Article] Origin of Cl-bearing silica-rich melt inclusions in diamond : experimental evidence for an eclogite connection (2010)
  • Author(s): Litasov, K.D., Safonov, O.G., Ohtani, E.
  • Journal Title: Geology Volume: 38 Pages: 1131-1134
  • Peer Reviewed
• [Presentation] Late metasomatic addition of garnet to the SCLM : Os-isotope evidence (2012)
  • Author(s): Malkovets, V.G., Griffin, W.L., Pearson, N.J., Rezvukhin, D.I., O'Reilly, S.Y., Pokhilenko, N.P., Garanin, V.K, Spetsius, Z.V., Litasov, K.D.
  • Organizer: 10th International Kimberlite Conference
  • Place of Presentation: Bangalore, India
• [Presentation] Melting phase relations of chlorine-bearing kimberlite at 2.1-6.5GPa and 900-1500℃ (2012)
  • Author(s): harygin, I.S., Litasov, K.D., Shatskiy, A., Golovin, A.V., Ohtani, E., Pokhilenko, N.P.
  • Organizer: 10th International Kimberlite Conference
  • Place of Presentation: Bangalore, India
• [Presentation] Segregation rate and transport mechanism of volatile-bearing melt in the deep mantle (2012)
  • Author(s): Shatskiy A., Litasov K.D., Ohtani E.
  • Organizer: 10th International Kimberlite Conference
  • Place of Presentation: Bangalore, India
• [Presentation] Melting of carbonated peridotite at 10-20GPa : implication for origin of kimberlite- and carbonatite-like magma in the deep mantle (2012)
  • Author(s): Ghosh, S., Litasov, K.D., Ohtani, E.
  • Organizer: 10th International Kimberlite Conference
  • Place of Presentation: Bangalore, India
• [Presentation] Melting phase relations in the systems peridotite-H_2O-CO_2 and eclogite-H_2O-CO_2 at pressures up to 27GPa (2012)
  • Author(s): Litasov, K.D., Shatskiy, A., Ohtani, E., Pokhilenko, N.P.
  • Organizer: 10th International Kimberlite Conference
  • Place of Presentation: Bangalore, India
• [Presentation] Melting of peridotite and eclogite coexisting with reduced C-O-H fluid at 3-16GPa : further constraints for redox melting models (2012)
  • Author(s): Litasov, K.D., Shatskiy, A., Ohtani, E.
  • Organizer: 10th International Kimberlite Conference
  • Place of Presentation: Bangalore, India
• [Presentation] Phase relations of eclogite+4.4% CO_2 at 9-21GPa : implications for diamond formation in the deep mantle (2012)
  • Author(s): Kiseeva, E.S., Litasov, K.D., Yaxley, G.M., Ohtani, E., Kamenetsky, V.S.
  • Organizer: 10th International Kimberlite Conference
  • Place of Presentation: Bangalore, India
• [Presentation] Sodium majorite and its Pyrope solid solutions : high pressure experiments and crystal-chemical implications (2012)
  • Author(s): Dymshits, A.M., Bindi, L., Bobrov, A.V., Litasov, K.D., Shatskiy, A.F., Ohtani, E., Litvin, Yu.A.
  • Organizer: 10th International Kimberlite Conference
  • Place of Presentation: Bangalore, India
• [Presentation] Solidi and melting phase relations of alkaline carbonatite at the deep mantle conditions (2012)
  • Author(s): Litasov, K.D., Shatskiy, A.Ohtani, E.
  • Organizer: 9^<th> International Workshop on Water Dynamics
  • Place of Presentation: Sendai, Japan
• [Presentation] Formation and diapiric mobilization of primary kimberlite melts : experimental constraints (2012)
  • Author(s): Shatskiy, A., Sharygin, I.S., Litasov, K.D.Ohtani, E.
  • Organizer: 9^<th> International Workshop on Water Dynamics
  • Place of Presentation: Sendai, Japan
• [Presentation] Melting of carbonated peridotite at 10-20GPa : implication to SiO_2-saturation of carbonated magma in the deep mantle (2012)
  • Author(s): Ghosh, S., Litasov, K.D., Ohtani, E.
  • Organizer: 9^<th> International Workshop on Water Dynamics
  • Place of Presentation: Sendai, Japan
• [Presentation] Thermal decomposition of polycyclic aromatic hydrocarbons at 800-1100K and 6-9GPa : Implication to Earth and planetary carbon dynamics (2012)
  • Author(s): Chanyshev, A.D., Litasov, K.D., Shatskiy, A., Furukawa, Y., Nemoto, M., Mochizuki, S., Ohtani, E., Funakoshi, K.
  • Organizer: 9^<th> International Workshop on Water Dynamics
  • Place of Presentation: Sendai, Japan
• [Presentation] Silicate diffusion in alkali-carbonatite and hydrous melt at 16.5 and 24GPa, with implications for mass transfer in the deep mantle (2012)
  • Author(s): Shatskiy, A., Litasov, K.D., Katsura, T., Borzdov, Y.M., Yamazaki, D., Ohtani, E.
  • Organizer: Joint Symposium of Misasa-2012 and Geofluid-2
  • Place of Presentation: Misasa, Japan
• [Presentation] Melting phase relations in the peridotite and eclogite systems Coexisting with reduced C-O-H fluid at 3-16GPa (2011)
  • Author(s): Litasov, K.D., Shatskiy, A., Ohtani, E.
  • Organizer: 2011 Japan Geoscience Union Meeting
  • Place of Presentation: Makuhari, Japan
• [Presentation] Role of alkali carbonates in the mantle magmatism, metasomatism, and diamond formation (2011)
  • Author(s): Shatskiy A., Litasov K.D., Sharigin I.S., Ohtani E.
  • Organizer: 2011 Japan Geoscience Union Meeting
  • Place of Presentation: Makuhari, Japan
• [Presentation] Diffusion of silicates in alkali carbonate malt and water fluid, experimental study at 17-24GPa and 1400-1750℃ (2011)
  • Author(s): Shatskiy, A., Litasov, K.D., Katsura, T., Yamazaki, D., Ohtani, E.
  • Organizer: 2011 Japan Geoscience Union Meeting
  • Place of Presentation: Makuhari, Japan
• [Presentation] Melting in the peridotite and eclogite, coexisting with reduced C-O-H fluid at 3-16GPa (2011)
  • Author(s): Litasov, K.D., Shatskiy, A., Ohtani, E.
  • Organizer: 2011 Goldschmidt conference
  • Place of Presentation: Prague, Czech Republic
• [Presentation] Na-bearing majoritic garnets in the system Mg_3Al_2Si_5O_<12>-Na_2 MgSi_5O_<12> at 11-20GPa : Solid solutions and structural peculiarities (2011)
  • Author(s): Bobrov, A.V., Dymshits, A.M., Bindi, L., Litasov, K.D., Shatskiy, A.F., Ohtani, E., Litvin, Yu.A.
  • Organizer: 2011 Goldschmidt conference
  • Place of Presentation: Prague, Czech Republic
• [Presentation] Late metasomatic addition of garnet to the SCLM : Os-isotope evidence (2011)
  • Author(s): Malkovets, V.G., Griffin, W.L., Pearson, N.J., Rezvukhin, D.I., O'Reilly, S.Y., Pokhilenko, N.P., Garanin, V.K., Spetsius, Z.V., Litasov K.D.
  • Organizer: 2011 Goldschmidt conference
  • Place of Presentation: Prague, Czech Republic
• [Presentation] Dissolution-precipitation as a possible mechanism of C-O-H fluid/melt segregation in the deep mantle (2011)
  • Author(s): Shatskiy A., Litasov K.D., Ohtani E.
  • Organizer: 2011 Goldschmidt conference
  • Place of Presentation: Prague, Czech Republic
• [Presentation] Deep carbon cycle in the subduction zones (2011)
  • Author(s): Litasov, K.D., Shatskiy, A.F., Ohtani, E.
  • Organizer: The 3^<rd> Deep Carbon Cycle International Workshop
  • Place of Presentation: Altai, Novosibirsk
• [Presentation] Heavy hydrocarbons in the high-pressure fluids : Where are we now? (2011)
  • Author(s): Chanyshev, A.D., Litasov, K.D., Goncharov, A.F., Ohtani, E.
  • Organizer: The 3^<rd> Deep Carbon Cycle International Workshop
  • Place of Presentation: Altai, Novosibirsk
• [Presentation] Dissolution-precipitation as a possible mechanism of carbonatite melt segregation in upwelling mantle (2011)
  • Author(s): Shatskiy, A.F., Litasov, K.D., Borzdov, Y.M., Katsura, T., Yamazaki, D., Ohtani, E.
  • Organizer: The 3^<rd> Deep Carbon Cycle International Workshop
  • Place of Presentation: Altai, Novosibirsk
• [Presentation] Experimentally determined phase and melting relations of carbonate eclogite from 9 to 20 GPa (2010)
  • Author(s): Yaxley, G.M., Kiseeva, E.S., Litasov, K.D.
  • Organizer: 2^<nd> Deep Carbon Cycle Conference
  • Place of Presentation: Beijing, China
• [Presentation] Effect of Carbon and Hydrogen on phase and melting relations and melt properties at high pressure (2010)
  • Author(s): Ohtani, E., Litasov, K.D., Sakamaki, T., Takahashi, S., Terasaki, H.
  • Organizer: 2^<nd> Deep Carbon Cycle Conference
  • Place of Presentation: Beijing, China
• [Presentation] Experimental study of carbdnate-silicate-metal equilibria at pressures to 30 GPa : New insights into deep volatile cycles (2010)
  • Author(s): Litasov, K.D., Shatskiy, A., Fei, Y., Ohtani, E.
  • Organizer: EGU General Asssembly 2010
  • Place of Presentation: Vienna, Austria
• [Presentation] Incipient fluid migration through the deep mantle by dissolution-precipitation : crystal growth constraints (2010)
  • Author(s): Shatskiy, A., Litasov, K.D., Borzdov, Y.M., Katsura, T., Ohtani, E.
  • Organizer: EGU General Assembly 2010
  • Place of Presentation: Vienna, Austria
• [Presentation] Effect of carbon and hydrogen on melting and magma properties at high pressure (2010)
  • Author(s): Ohtani, E., Sakamaki, T., Litasov, K.D.
  • Organizer: 2010 Japan Geoscience Union Meeting
  • Place of Presentation: 千葉
• [Presentation] Carbon-silicate-Fe-metal reactions at high pressures : New experimental constraints on deep volatile cycles (2010)
  • Author(s): Litasov, K.D., Shatskiy, A., Terasaki, H., Ohtani, E., Fei, Y.
  • Organizer: 2010 Japan Geoscience Union Meeting
  • Place of Presentation: 千葉
• [Presentation] Incipient fluid migration through the deep mantle by dissolution-precipitation : crystal growth constraints (2010)
  • Author(s): Shatskiy, A., Litasov, K.D., Yamazaki, D., Borzdov, Y.M., Kastura, T., Ohtani, E.
  • Organizer: 2010 Japan Geoscience Union Meeting
  • Place of Presentation: 千葉
• [Presentation] carbonate-silicate-Fe-metal reactions and stability of C-O-H species in the Earth's mantle (2010)
  • Author(s): Litasov, K.D., Shatskiy, A., Terasaki, H., Ohtani, E.
  • Organizer: Dynamic Earth arid Heterogenous Structure, Global Center Of Excellence Symposium
  • Place of Presentation: 仙台
• [Presentation] High-pressure experiments on anhydrous carbonated eclogite at 9-20 GPa-implications for the recycling of carbonate into the mantle (2010)
  • Author(s): Kiseeva, E.S., Litasov, K.D., Yaxley, G.M., Ohtahi, E., Kamenetsky, V.S.
  • Organizer: 20^<th> General Meeting of International Mineralogical Association
  • Place of Presentation: Budapest, Hungary
• [Presentation] Dissolution-precipitation as a possible mechanism for C-O-H fluid transport in the mantle (2010)
  • Author(s): Shatskiy, A.F., Litasov, K.D., Borzdov, Y.M., Katsura, T., Ohtani, E.
  • Organizer: XVI All-Russian Conference on Experimental Mineralogy
  • Place of Presentation: Chernogolovka, Russia
• [Presentation] The influence of chloride components on mantle melting : a review of the experimental data and future perspectives (2010)
  • Author(s): Safonov, O.G., Litasov, K.D.
  • Organizer: XVI All-Russian Conference on Experimental Mineralogy
  • Place of Presentation: Chernogolovka, Russia
• [Presentation] Reactions between Mg- and Ca-carbonates with SiO_2 and iron at high pressures (2010)
  • Author(s): Litasov, K.D.
  • Organizer: XVI All-Russian Conference on Experimental Mineralogy
  • Place of Presentation: Chernogolovka, Russia
• [Presentation] Melting phase relations of model alkali carbonatite systems at 3-21 GPa and implication to mantle metasomatism (2010)
  • Author(s): Litasov, K.D., Shatskiy, A., Ohtani, E.
  • Organizer: 51th High-Pressure Conference of Japan
  • Place of Presentation: 仙台
• [Presentation] Carbon cycle in the subduction zone and deep mantle : Constraints from equilibrium experiments at high pressure and temperature (2010)
  • Author(s): Fei, Y., Litasov, K.D.
  • Organizer: American Geophysical Union, Fall Meeting
  • Place of Presentation: San-Francisco, USA
• [Presentation] Melting phase relations of K- and Na-bearing carbonatite at 3-21 GPa with implication to deep carbon cycle (2010)
  • Author(s): Litasov, K.D., Shatskiy, A., Ohtani, E.
  • Organizer: American Geophysical Union, Fall Meeting
  • Place of Presentation: San-Francisco, USA