Emplacement processes of large submarine lava flows

• Project/Area Number: 25400446
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Kanazawa University
• Principal Investigator: Umino Susumu 金沢大学, 自然システム学系, 教授 (30192511)
• Co-Investigator(Kenkyū-buntansha): KANAYAMA Kyoko 金沢大学, 理工研究域, 研究員 (80707688) ; KUSANO Yuki 産業技術総合研究所, 地質調査総合センター, 研究員 (00635972)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 巨大海底溶岩流 / オマーンオフィオライト / 巨大海台 / 流動・定置メカニズム / 冷却固化過程 / 噴火時間 / 産状 / 溶岩流噴火

Outline of Final Research Achievements

The V3 Volcanic rocks of the Oman Ophiolite are thick submarine lava flows exceeding an estimated volume of several cubic kilometers. The V3 flow field consists of massive cores sandwiched between columnar jointed lava crusts. The V3 flow is divided into the Upper and the Lower flow by the intervening pillow lava and shale. Yb variation of the lower flow is consistent with the internal growth of inflating sheet where newly supplied lava was injected into the core of the flow, whereas the upper flow was empalced lobe by lobe one after the top of the other, which were welded togher to form a massive sheet-like lava.

Research Products

• [Journal Article] Thermal and chemical evolution of the subarc mantle revealed by spinel-hosted melt inclusions in boninite from the Ogasawara (Bonin) Archipelago, Japan. (2015)
  • Author(s): Umino, S., Kitamura, K., Kanayama, K., Tamura, A., Sakamoto, N., Ishizuka, O. and Arai, S.
  • Journal Title: Geology Volume: 43 Pages: 151-154
  • DOI: 10.1130/g36191.1
  • NAID: 120005593938
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Evidence for hydrothermal activity in the earliest stages of intraoceanic arc formation: implication for ophiolite-hosted hydrothermal activity. (2014)
  • Author(s): Ishizuka, O., Umino, S., Taylor, R.N. and Kanayama, K.
  • Journal Title: Economic Geology Volume: 109 Pages: 2159-2177
  • Peer Reviewed
• [Journal Article] Shallow submarine volcano group in the early stage of island arc development: geology and petrology of small islands south off Hahajima main island, the Ogasawara Islands. (2014)
  • Author(s): Kanayama, K., Umino, S., and Ishizuka, O.
  • Journal Title: Journal of Asian Earth Sciences Volume: 85 Pages: 1-25
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Evolution of volcanism and magmatism during initial arc stage: constraints on the tectonic setting of the Oman Ophiolite. (2014)
  • Author(s): Kusano, Y. Hayashi, M., Adachi, Y., Umino, S. and Miyashita, S.
  • Journal Title: In Rollinson, H.R., Searle, M.P., Abbasi, I.A., Al-Lazki, A. and Al Kindi, M.H. (eds.), Tectonic Evolution of the Oman Mountains. Geological Society, London, Special Publications Volume: 392 Pages: 177-193
  • DOI: 10.1144/sp392.9
  • Peer Reviewed
• [Journal Article] Formation and Evolution of Oceanic Lithosphere: New Insights on Crustal Structure and Igneous Geochemistry from 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: In Stein, R., Blackman, D., Inagaki, F. and Larsen, H.-C. (eds.) Earth and Life Processes Discovered from Subseafloor Environment. Developments in Marine Geology Volume: 7 Pages: 449-505
  • Peer Reviewed
• [Presentation] 初期島弧のマグマ進化過程：オマーンオフィオライトの例 (2015)
  • Author(s): 草野有紀・海野 進・北村啓太朗・石川剛志・永石一弥
  • Organizer: 日本火山学会秋季大会
  • Place of Presentation: 富山大学，富山市
  • Year and Date: 2015-09-30
• [Presentation] ハイアロクラスタイトの形成機構の解明―水底溶岩流の破砕を支配する要因について (2015)
  • Author(s): 梅澤優美・海野進・金山恭子・草野有紀・安田敦
  • Organizer: 日本火山学会秋季大会
  • Place of Presentation: 富山大学，富山市
  • Year and Date: 2015-09-30
• [Presentation] オフリッジ巨大海底溶岩流の組成変化と固化過程：オマーンオフィオライトV3溶岩原の岩石学・地球化学 (2015)
  • Author(s): 大塚遼・海野進・草野有紀・金山恭子
  • Organizer: 日本地質学会第122年学術大会
  • Place of Presentation: 信州大学，長野市
  • Year and Date: 2015-09-12
• [Presentation] ハイアロクラスタイトの形成機構の解明―水底溶岩流の破砕を支配する要因について (2015)
  • Author(s): 梅澤優美・海野進・金山恭子・草野有紀・安田敦
  • Organizer: 日本地質学会第122年学術大会
  • Place of Presentation: 信州大学，長野市
  • Year and Date: 2015-09-12
• [Presentation] Contamination of Slab Components into the Incipient Arc Magmatism in the Oman Ophiolite (2015)
  • Author(s): Kusano, Y., Umino, S., Shinjo, R., Adachi Y., Nagaishi, K., and Ishikawa, T.
  • Organizer: Goldschmidt 2015
  • Place of Presentation: プラハ，チェコ
  • Year and Date: 2015-08-19
  • Int'l Joint Research
• [Presentation] Emplacement and solidification process of off-axis large submarine lava field: Petrological and geochemical variations from the Oman Ophiolite (2015)
  • Author(s): Otsuka, R., Kusano, Y., Kanayama, K., and Umino, S.
  • Organizer: AOGS
  • Place of Presentation: シンガポール
  • Year and Date: 2015-08-04
  • Int'l Joint Research
• [Presentation] 高温沈み込み帯における初期島弧火成活動の進化過程 (2015)
  • Author(s): 草野有紀・海野 進・北村 啓太朗・足立佳子・新城竜一・宮下純夫
  • Organizer: 地球惑星科学連合2015年大会
  • Place of Presentation: 幕張メッセ，千葉市
  • Year and Date: 2015-05-27
• [Presentation] Thermo-chemical evolution of mantle wedge during the incipient stage of the Izu-Ogasawara-Mariana subduction zone. (2014)
  • Author(s): Kanayama, K., Kitamura, K., Umino, S. and Ishizuka, O.
  • Organizer: Asia Oceania Geosciences Society
  • Place of Presentation: Sapporo
  • Year and Date: 2014-08-01
• [Presentation] Hot subduction zone and the ephemeral magmatism in the Oman Ophiolite. (2014)
  • Author(s): Kusano, Y., Kitamura, K., Adachi, Y., Shinjo, R., Umino, S. and Miyashita, S.
  • Organizer: Asia Oceania Geosciences Society
  • Place of Presentation: Sapporo
  • Year and Date: 2014-08-01
• [Presentation] Geochemistry and Genetic Conditions of Primary Boninites from the Ogasawara (Bonin) Islands and Oman Ophiolite ― An Insight from Melt Inclusion Study. (2014)
  • Author(s): Kitamura, K., Umino, S., Kanayama, K., Kusano, Y. and Ishizuka, O.
  • Organizer: Asia Oceania Geosciences Society
  • Place of Presentation: Sapporo
  • Year and Date: 2014-07-28
• [Presentation] Fate of high-T subduction zone and the obduction of the Oman Ophiolite. (2014)
  • Author(s): Umino, S., Kusano, Y., Kitamura, K., Nagaishi, K., Ishikawa, T. and Kanayama, K.
  • Organizer: Asia Oceania Geosciences Society
  • Place of Presentation: Sapporo
  • Year and Date: 2014-07-28
  • Invited
• [Presentation] Geochemistry and Genetic Conditions of Primary Boninites from the Ogasawara (Bonin) Islands and the Oman Ophiolite. (2014)
  • Author(s): Kitamura, K., Umino, S., Kanayama, K., Kusano, Y. and Ishizuka, O.
  • Organizer: Goldschmidt Conference
  • Place of Presentation: Sacramento
  • Year and Date: 2014-06-11
• [Presentation] Prolonged vs. Failed Subduction Zone. (2014)
  • Author(s): Umino, S., Kitamura, K., Kanayama, K., Kusano, Y., Nagaishi, K., Ishikawa, T. and Ishizuka, O.
  • Organizer: Goldschmidt Conference
  • Place of Presentation: Sacramento
  • Year and Date: 2014-06-11
  • Invited
• [Presentation] 巨大オフリッジ溶岩流の定置プロセスーガテマラ海盆，深海掘削1256C孔の岩石学．
  • Author(s): 海野 進・佐伯和哉
  • Organizer: 地球惑星科学連合2013年大会
  • Place of Presentation: 幕張
• [Presentation] Emplacement processes of off-axis large submarine lava field in the Oman Ophiolite.
  • Author(s): Umino, S., Kusano, Y., Kanayama, K. and Kitamura, K.
  • Organizer: IAVCEI 2013 Scientific Assembly
  • Place of Presentation: 鹿児島
• [Presentation] オマーンオフィオライトのオフリッジ巨大海底溶岩流の岩石学・地球化学．
  • Author(s): 大塚遼・草野有紀・金山恭子・海野 進
  • Organizer: 地球惑星科学連合2014年大会
  • Place of Presentation: 横浜
• [Book] 海洋下部地殻への挑戦：1256D掘削孔での成果（Exps 309/312/335）． (2014)
  • Author(s): 宮下純夫・海野 進
  • Total Pages: 7
  • Publisher: 月刊地球号外，海洋出版