Physicochemical analysis of early solar system based on formation kinetics of refractory inclusions of meteorites

2020 Fiscal Year Annual Research Report

• Project/Area Number: 16H06349
• Research Institution: Hokkaido University
• Principal Investigator: 圦本 尚義 北海道大学, 理学研究院, 教授 (80191485)
• Co-Investigator(Kenkyū-buntansha): 橘 省吾 東京大学, 大学院理学系研究科(理学部), 教授 (50361564)
• Project Period (FY): 2016-05-31 – 2021-03-31
• Keywords: 地球化学 / 宇宙科学 / 隕石 / 太陽系 / 原始惑星系

Outline of Annual Research Achievements

太陽系形成の最初期に内側太陽系で高温ガスからの固体凝縮プロセスや加熱による固体溶融プロセスがあったことは，始源的隕石中の難揮発性包有物（CAI やAOA）の存在から明らかである．惑星材料物質が経験したこの高温プロセスは，原始星や原始惑星系円盤の天文観測でも観測されておらず，その物理化学環境はいまだにはっきりとしない．本研究では，難揮発性包有物の同位体岩石学・鉱物学的研究に，室内実験による難揮発性包有物の再現実験を組み合わせ，太陽系最初期の高温プロセスの物理化学環境を定量的に制約する．特に本研究により，原始惑星系円盤内縁領域の圧力条件，水蒸気分圧とガス／ダスト比が新規決定できることが期待される．本年度は以下の研究成果が得られた．
１．CAI組成メルトの低圧下結晶化実験・酸素同位体交換実験
低水素圧条件での模擬CAIの溶融・結晶化実験において水素圧力，加熱時間を系統的に変化させた実験をおこない，CAI模擬物質の組織，構成鉱物化学組成に対する蒸発の影響を求めた．低水蒸気圧および低CO蒸気圧でのCAI模擬物質の溶融・結晶化における酸素同位体交換実験をおこなった．これらの実験で作成した模擬CAIと天然CAIの鉱物学岩石学・酸素同位体分布の観察・分析から，天然CAIを説明するガス圧力を求めた．
２． CAIの鉱物学岩石学・酸素同位体分布の観察・分析
細粒CAIの鉱物学岩石学・酸素同位体分布の観察を継続した．この観察と実験で推定される凝縮挙動を組み合わせ，メリライトの結晶成長する温度，圧力を求め，Al-Mg年代によりCAIの生成期間を求めた．成中にガスの酸素同位体組成が変わったことも発見し，実験で得る酸素同位体交換反応速度を合わせ，形成場のガスの酸素同位体変化の時間スケールを制約した．
以上の実験で求めた速度論データと隕石の分析結果を融合し，太陽系最初期の高温プロセスの物理化学環境を決定した．

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] NASA Johnson Space Center(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: NASA Johnson Space Center
• [Int'l Joint Research] CRPG(フランス)
  • Country Name: FRANCE
  • Counterpart Institution: CRPG
• [Journal Article] Widespread Tissintite in Strongly Shock-Lithified Lunar Regolith Breccias. (2021)
  • Author(s): Zhang, A.-C., Jiang, Q.-T., Tomioka, N., Guo, Y.-J., Chen, J.-N., Li, Y., Sakamoto, N. and Yurimoto, H.
  • Journal Title: Geophysical Research Letters Volume: 48 Pages: e2020GL091554
  • DOI: 10.1029/2020GL091554
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Hydrogen isotopic exchange kinetics between organic matter and water: Implications for chemical evolution during meteorite parent body processing. (2021)
  • Author(s): Kebukawa, Y., Kobayashi, S., Kawasaki, N., Wang, Y., Yurimoto, H. and Cody, G. D.
  • Journal Title: Meteoritics & Planetary Science Volume: - Pages: 1-15
  • DOI: 10.1111/maps.13629
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Unique angrite-like fragments in a CH3 chondrite reveal a new basaltic planetesimal. (2020)
  • Author(s): Ai-Cheng Zhang, Noriyuki Kawasaki, Minami Kuroda, Yang Li, Hua-Pei Wang, Xue-Ning Bai, Naoya Sakamoto, Qing-Zhu Yin, Hisayoshi Yurimoto
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 275 Pages: 48-63
  • DOI: 10.1016/j.gca.2020.02.014
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Evidence of metasomatism in the interior of Vesta. (2020)
  • Author(s): Ai-Cheng Zhang, Noriyuki Kawasaki, Huiming Bao, Jia Liu, Liping Qin, Minami Kuroda, Jian-Feng Gao, Li-Hui Chen, Ye He, Naoya Sakamoto, Hisayoshi Yurimoto
  • Journal Title: Nature Communications Volume: 11 Pages: 1289
  • DOI: 10.1038/s41467-020-15049-7
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Variations in initial 26Al/27Al ratios among fine-grained Ca-Al-rich inclusions from reduced CV chondrites. (2020)
  • Author(s): Noriyuki Kawasaki, Sohei Wada, Changkun Park, Naoya Sakamoto, Hisayoshi Yurimoto
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 279 Pages: 1-15
  • DOI: 10.1016/j.gca.2020.03.045
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Cr-Zr-Ca armalcolite in lunar rocks is loveringite: Constraints from electron backscatter diffraction measurements. (2020)
  • Author(s): Ai-Cheng Zhang, Run-Lian Pang, Naoya Sakamoto, Hisayoshi Yurimoto
  • Journal Title: American Mineralogist Volume: 105 Pages: 1021-1029
  • DOI: 10.2138/am-2020-7260
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Survivability of presolar oxygen isotopic signature of amorphous silicate dust in theprotosolar disk. (2020)
  • Author(s): Daiki Yamamoto, Shogo Tachibana, Noriyuki Kawasaki, Hisayoshi Yurimoto
  • Journal Title: Meteoritics & Planetary Science Volume: 55 Pages: 1281-1292
  • DOI: 10.1111/maps.13365
  • Peer Reviewed / Open Access
• [Journal Article] Melilite condensed from an 16O-poor gaseous reservoir: Evidence from a fine-grained Ca-Al-rich inclusion of Northwest Africa 8613. (2020)
  • Author(s): Sohei Wada, Noriyuki Kawasaki, Changkun Park, Hisayoshi Yurimoto
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 288 Pages: 161-175
  • DOI: 10.1016/j.gca.2020.08.004
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A new occurrence of corundum in eucrite and its significance. (2020)
  • Author(s): Jie-Ya Li, Ai-Cheng Zhang, Naoya Sakamoto, Hisayoshi Yurimoto, Li-Xin Gu
  • Journal Title: American Mineralogist Volume: 105 Pages: 1656-1661
  • DOI: 10.2138/am-2020-7361
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Mineralogical and oxygen isotopic study of a new ultrarefractory inclusion in the Northwest Africa 3118 CV3 chondrite. (2020)
  • Author(s): Yong Xiong, Ai‐Cheng Zhang, Noriyuki Kawasaki, Chi Ma, Naoya Sakamoto, Jia‐Ni Chen, Li‐Xin, Gu, Hisayoshi Yurimoto
  • Journal Title: Meteoritics & Planetary Science Volume: 55 Pages: 2184-2205
  • DOI: 10.1111/maps.13575
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Extraterrestrial hexamethylenetetramine in meteorites-a precursor of prebiotic chemistry in the inner solar system. (2020)
  • Author(s): Oba Y., Takano Y., Naraoka H., Furukawa Y., Glavin D. P., Dworkin J. P. and Tachibana S.
  • Journal Title: Nature Communications Volume: 11 Pages: 6243
  • DOI: 10.1038/s41467-020-20038-x
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Future missions related to the determination of the elemental and isotopic composition of Earth, Moon and the terrestrial planets. (2020)
  • Author(s): Dandouras I., Blanc M., Fossati L., Gerasimov M., Guenther E. W., Tachibana S.他11名
  • Journal Title: Space Science Reviews Volume: 216 Pages: 121
  • DOI: 10.1007/s11214-020-00736-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Hayabusa2 landing site selection: Surface topography of Ryugu and touchdown safety. (2020)
  • Author(s): Kikuchi S., Watanabe S., Saiki T., Yabuta H., Sugita S., Tachibana S.他
  • Journal Title: Space Science Reviews Volume: 216 Pages: 116
  • DOI: 10.1007/s11214-020-00737-z
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Experiments quantifying elemental and isotopic fractionations during evaporation of CAI-like melts in low-pressure hydrogen and in vacuum: Constraints on thermal processing of CAIs in the protoplanetary disk. (2020)
  • Author(s): Mendybaev R. A., Kamibayashi M., Teng F.-Z., Savage P. S., Georg R. B., Richter F. M. and Tachibana S.
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 292 Pages: 557-576
  • DOI: 10.1016/j.gca.2020.09.005
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Collisional history of Ryugu’s parent body from bright surface boulders (2020)
  • Author(s): Tatsumi E., Sugimoto C., Riu L., Sugita S., Nakamura T., Tachibana S.他69名
  • Journal Title: Nature Astronomy Volume: 5 Pages: 39-45
  • DOI: 10.1038/s41550-020-1179-z
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Chemical assessment of the explosive chamber in the projector system of Hayabusa2 for asteroid sampling. (2020)
  • Author(s): Takano Y., Yamada K., Okamoto C., Sawada H., Okazaki R., Sakamoto K., Kebukawa Y., Kiryu K., Shibuya T., Igisu M., Yano H., Tachibana S. and Hayabusa2 project team
  • Journal Title: Earth, Planets and Space Volume: 72 Pages: 97
  • DOI: 10.1038/s41598-020-64815-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Importance of Phobos Sample Return for Understanding the Mars-Moon System (2020)
  • Author(s): Usui T., Bajo K., Fujiya, W., Furukawa Y., Koike M., Miura Y. N., Sugahara H., Tachibana S., Takano Y. and Kuramoto K.
  • Journal Title: Space Science Reviews volume Volume: 216 Pages: 49
  • DOI: 10.1007/s11214-020-00668-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface (2020)
  • Author(s): Morota T., Sugita S., Cho Y., Kanamaru M., Tatsumi E., Tachibana S.他89名
  • Journal Title: Science Volume: 368 Pages: 654-659
  • DOI: 10.1126/science.aaz6306
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] An artificial impact on the asteroid 162173 Ryugu formed a crater in the gravity-dominated regime. (2020)
  • Author(s): Arakawa M., Saiki T., Wada K., Ogawa K., Kadono T., Tachibana S.他62名
  • Journal Title: Science Volume: 368 Pages: 67-71
  • DOI: 10.1126/science.aaz1701
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Highly porous nature of a primitive asteroid revealed by thermal (2020)
  • Author(s): Okada T., Fukuhara T., Tanaka S., Taguchi M., Arai T., Tachibana S.他73名
  • Journal Title: Nature Volume: 579 Pages: 518-525
  • DOI: 10.1038/s41586-020-2102-6
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Hayabusa2 Reentry Capsule Retrieval and Sample Container Opening Operations (2021)
  • Author(s): Tachibana S., Sawada H., Okazaki R., Takano Y., Sakamoto K. et al.
  • Organizer: 52nd Lunar and Planetary Science Conference
  • Int'l Joint Research
• [Presentation] Handling and Description of C-Type Asteroid Ryugu Samples Returned by Hayabusa2 (2021)
  • Author(s): Yada T., Abe M., Nakato A., Yogata K., Miyazaki A., Tachibana S. et al.
  • Organizer: 52nd Lunar and Planetary Science Conference
  • Int'l Joint Research
• [Presentation] 新しい SNMS -LIMAS- . (2020)
  • Author(s): 圦本尚義
  • Organizer: SIMS研究会13
  • Invited
• [Presentation] Thermal history of coarse-grained CAIs in the protosolar disk constrained by O-isotope exchange kinetics between CAI melt and water vapor. (2020)
  • Author(s): D. Yamamoto, M. Kamibayashi, N. Kawasaki, S. Tachibana, H. Yurimoto
  • Organizer: JpGU-AGU Joint Meeting 2020
• [Presentation] NWA 7865 reduced CV3 コンドライト隕石中のcompact Type A Ca-Al-rich inclusionの岩石組織学と酸素同位体組成. (2020)
  • Author(s): 鈴村 明政, 川崎 教行, 瀬戸 雄介, 圦本 尚義, 伊藤 正一
  • Organizer: JpGU-AGU Joint Meeting 2020
• [Presentation] NWA 8613隕石中の細粒難揮発性包有物が示す16Oに乏しい酸素同位体ガスリザバー. (2020)
  • Author(s): 和田 壮平, 川崎 教行, 圦本 尚義
  • Organizer: JpGU-AGU Joint Meeting 2020
• [Presentation] アエンデ隕石Type B CAIの部分溶融のAl－Mg年代学. (2020)
  • Author(s): 川崎 教行，伊藤 正一，坂本 直哉，サイモン スティーブ，圦本 尚義
  • Organizer: JpGU-AGU Joint Meeting 2020
• [Presentation] CAI Formation: Processes and Ages Under Scopes of O Isotopes and Al-Mg Systematics Based on Crystal Growth (2020)
  • Author(s): Yurimoto H
  • Organizer: Goldschmidt2020
  • Int'l Joint Research / Invited
• [Presentation] Age of Asteroid Sample Return. (2020)
  • Author(s): Yurimoto H
  • Organizer: Goldschmidt2020
  • Int'l Joint Research / Invited
• [Presentation] Hydrothermal Synthesis of Soluble Organic Molecules Starting from the Solar O/C/N Ratio (2020)
  • Author(s): Nagahisa S, Tachibana S, Shimamura S & Takano Y
  • Organizer: Goldschmidt 2020
  • Int'l Joint Research
• [Presentation] I-Xe Dating of Solar Noble Gas-Rich Meteorites (2020)
  • Author(s): Arai K, Takenouchi A, Sumino H & Tachibana S
  • Organizer: Goldschmidt 2020
  • Int'l Joint Research
• [Presentation] A Sketch for a Photolytic History of Organic Molecules in the Solar System (2020)
  • Author(s): Orthous-Daunay F-R, Piani L, Flandinet L, Thissen R, Wolters C, Vuitton V, Poch O, Moynier F, Sugawara I, Naraoka H & Tachibana S
  • Organizer: Goldschmidt 2020
  • Int'l Joint Research / Invited
• [Presentation] 原始惑星系円盤における非晶質Mg-Feケイ酸塩の結晶化 (2020)
  • Author(s): 櫻井 亮輔, 小林 航大, 山本 大貴, 橘 省吾
  • Organizer: JpGU-AGU Joint Meeting 2020
• [Presentation] 太陽風起源希ガスを含む隕石のI-Xe年代 (2020)
  • Author(s): 新井 香春, 角野 浩史, 竹ノ内 惇志, 橘 省吾
  • Organizer: JpGU-AGU Joint Meeting 2020
• [Presentation] アモルファスH2O, CO, CO2の結晶化によるダスト上での不均質な多面体氷結晶の生成 (2020)
  • Author(s): 香内 晃, 大場 康弘, 羽馬 哲也, 山崎 智也, 木村 勇気, 渡部 直樹, 橘 省吾, 城野 信一, 奥住 聡, 百瀬 宗武, 古家 健次
  • Organizer: JpGU-AGU Joint Meeting 2020
• [Remarks] 北海道大学大学院理学研究院圦本研究室ホームページ
  • URL: http://vigarano.ep.sci.hokudai.ac.jp/