Origin of mantle hydrocarbon: Implications from detail observation of natural peridotite samples

• Project/Area Number: 26610176
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: ABE Natsue 国立研究開発法人海洋研究開発機構, 海洋掘削科学研究開発センター, 主任技術研究員 (80302933)
• Co-Investigator(Renkei-kenkyūsha): TAKANO Yoshinori 国立研究開発法人海洋研究開発機構, 生物地球科学研究分野, 主任研究員 (80399815) ; SENDA Ryoko 九州大学, 比較社会文化研究科(研究院), 准教授 (50377991)
• Research Collaborator: ARAI Shoji 金沢大学 ; HARIGANE Yumiko 産業総合研究所 ; ISHIMARU Satoko 熊本大学 ; Pilet Sebastien ローザンヌ大学 ; Rochat Laetitia ローザンヌ大学
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: マントルかんらん岩 / 有機化合物 / 蛇紋岩化 / 流体包有物 / メタン / 捕獲岩 / オフィオライト / かんらん岩 / マントル捕獲岩 / 包有物 / 海洋リソスフェア / プチスポット / マントル有機物 / マイクロX線CT / 岩内岳かんらん岩 / X線マイクロCTスキャン / かんらん岩捕獲岩 / ざくろ石かんらん岩 / モロッコ

Outline of Final Research Achievements

In order to investigate the origin of hydrocarbons in mantle peridotite samples, detail petrographical study on some peridotite samples were conducted.
3D analysis using micro-X-ray CT and FIB-SEM of fluid inclusions in the samples combined with a compilation of recent studies in literatures suggests that those hydrocarbons can be formed by serpentinization during cooling of H2O fluid and the wall olivine crystal in a closed system.

Research Products

• [Int'l Joint Research] ローザンヌ大学(スイス)
• [Journal Article] Electrical conductivity of old oceanic mantle in the northwestern Pacific I: 1-D profiles suggesting differences in thermal structure not predictable from a plate cooling model (2017)
  • Author(s): Baba Kiyoshi、Tada Noriko、Matsuno Tetsuo、Liang Pengfei、Li Ruibai、Zhang Luolei、Shimizu Hisayoshi、Abe Natsue、Hirano Naoto、Ichiki Masahiro、Utada Hisashi
  • Journal Title: Earth, Planets and Space Volume: 69 Issue: 1 Pages: 111-111
  • DOI: 10.1186/s40623-017-0697-0
  • NAID: 120006358589
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Garnet xenocryst from petit-spot lavas as an indicator for off-axis mantle refertilization at intermediate spreading ridges (2017)
  • Author(s): L. Rochat、S. Pilet、O. Muntener、T. Duretz、L. Baumgartner、N. Abe、 N. Hirano
  • Journal Title: Geology Volume: 45 Issue: 12 Pages: 1091-1094
  • DOI: 10.1130/g39427.1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Pre-subduction metasomatic enrichment of the oceanic lithosphere induced by plate flexure (2016)
  • Author(s): S. Pilet, N. Abe, L. Rochat, M. -A.Kaczmarek, N. Hirano, S. Machida, D. M. Buchs, P. O. Baumgartner & O. Müntener
  • Journal Title: Nature Geoscience Volume: 9 Issue: 12 Pages: 898-903
  • DOI: 10.1038/ngeo2825
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Chapter 4.2.1. Formation and evolution of oceanic lithosphere: new insights on crustal structure and igneous geochemistry form ODP/IODP Sites 1256, U1309, and U1415. (2014)
  • Author(s): Ildefonse, B., Abe, N., Godard, M. Morris, A., Teagle, D.A.H. and Umino, S.
  • Journal Title: (Eds. Stein, R., Blackman, D.K., Inagaki, F. and Larsen, H.-C.) Earth and life processes discovered from subseafloor environments. Developments in Marine Geology v.7. Elsevier Volume: 7 Pages: 449-505
  • DOI: 10.1016/b978-0-444-62617-2.00017-7
  • ISBN: 9780444626172
  • Peer Reviewed
• [Presentation] プチスポット火山中の捕獲岩などの研究結果から見た古い太平洋プレート地殻-上部マントル岩石構造 (2018)
  • Author(s): 阿部 なつ江
  • Organizer: 東京大学地震研究所研究集会
  • Invited
• [Presentation] Overview of Hole GT3A: The sheeted dike/gabbro transition (2017)
  • Author(s): Natsue Abe, Michelle Harris, Katsuyoshi Michibayashi, Juan Charlos de Obeso, Peter B Kelemen, Damon A H Teagle, Jude Ann Coggon, Juerg Michael Matter, The Oman Drilling Project Phase I Science Party
  • Organizer: AGU Fall Meeting 2017
  • Int'l Joint Research
• [Presentation] nitial results on the physical property measurement of ChikyuOman cores: listvenite, serpentinite and the metamorphic sole from ICDP Hole BT1B (2017)
  • Author(s): Kohei Hatakeyama, Keishi Okazaki, Natsue Abe, James Andrew Monton Leong, Katsuyoshi Michibayashi, Peter B Kelemen, Michelle Harris
  • Organizer: AGU Fall Meeting 2017
  • Int'l Joint Research
• [Presentation] Initial report of the physical property measurement, ChikyuOman core description Phase I: sheeted dike and gabbro boundary from ICDP Holes GT1A, GT2A and GT3A (2017)
  • Author(s): Keishi Okazaki, Natsue Abe, Kohei Hatakeyama, Benoit Ildefonse, James Andrew Monton Leong, Yamato Tateishi, Damon A H Teagle, Eiichi Takazawa, Peter B Kelemen, Katuyoshi Michibayashi, Jude Ann Coggon, Michelle Harris, Juan Carlos de Obeso
  • Organizer: AGU Fall Meeting 2017
  • Int'l Joint Research
• [Presentation] Petit-spot lavas as test for akaline magma generation (2016)
  • Author(s): Rochat, L., Pilet, S., Kaczmarek,.M.-A.C., Munterner, O., Abe, N., Hirano, N. and Machida, S
  • Organizer: Goldschmidt Conference 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-29
  • Int'l Joint Research
• [Presentation] How petit-spot mantle xenoliths will refine LAB processes (2016)
  • Author(s): Pilet, S., Rochat, L., Munterner, O., Kaczmarek,.M.-A.C., Abe, N., Hirano, N. and Machida, S.
  • Organizer: Goldschmidt Conference 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-28
  • Int'l Joint Research
• [Presentation] Occurrence and potential origin of “Mantle Hydrocarbon” (2015)
  • Author(s): Natsue Abe
  • Organizer: 2nd European Mantle Workshop
  • Place of Presentation: Hotel Jana Pawla II, Wroclaw, Poland
  • Year and Date: 2015-08-26
  • Int'l Joint Research
• [Presentation] Petrology of the peridotite xenoliths from lower oceanic lithosphere (2014)
  • Author(s): Natsue Abe
  • Organizer: 6th International Orogenic Lherzolite Conference
  • Place of Presentation: Marrakech, Morocco
  • Year and Date: 2014-05-08 – 2014-05-11
• [Book] Ophiolites and ultramafic rocks. (In MORENO, T., WALLIS, S., KOJIMA, T. & GIBBONS, W. (eds) The Geology of Japan.) (2016)
  • Author(s): Ishiwatari, A., Ozawa, K., Arai, S., Ishimaru, S. Abe, N. and Takeuchi, M.
  • Total Pages: 522
  • Publisher: Geological Society, London
• [Remarks] JAMSTEC研究者総覧（阿部なつ江）
  • URL: http://www.jamstec.go.jp/souran/html/Natsue_Abe001583-j.html
• [Remarks] JAMSTEC研究者総覧
  • URL: http://www.jamstec.go.jp/souran/html/Natsue_Abe001583-j.html