Changing processes from flat-slab subduction to slab roll-back from Jurassic to Cretaceous at the eastern margin of Asian continents

• Project/Area Number: 15K05314
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geology
• Research Institution: Yamaguchi University
• Principal Investigator: Imaoka Teruyoshi 山口大学, 大学院創成科学研究科, 教授 (30193668)
• Co-Investigator(Kenkyū-buntansha): 君波 和雄 山口大学, 理工学研究科, 教授 (20127757) ; 永嶌 真理子 山口大学, 大学院創成科学研究科, 准教授 (80580274)
• Co-Investigator(Renkei-kenkyūsha): ITAYA Tetsumaru NPO法人地球年代学ネットワーク, 理事長 (60148682) ; KAMEI Atsushi 島根大学, 総合理工学部, 教授 (60379691)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 白亜紀 / 沈み込み帯 / 村上石 / ランプロファイアー / 海洋プレート / ロールバック / 高Nb玄武岩 / 火成岩 / 西南日本 / 火成活動 / アジア大陸 / カルデラ / 流紋岩

Outline of Final Research Achievements

Recently, flat-slab subduction to slab roll-back processes from Jurassic to Cretaceous at the eastern margin of Asian continents were proposed. Several geological events, and magma and mineral genesis related to slab roll-back process were revealed in this study; magma genesis of the High-Nb basalt of the Kyoto lamprophyres, petrogenesis of the Cretaceous Ofuku pluton related to the ore-genesis of the Yamato mine, magma mixing and mingling in the Futaoi-island, Yamaguchi Prefectute, and finding a new mineral “Murakamiite” in metasomatites from the Iwagi Islet, Ehime Prefecture, Japan.

Research Products

• [Journal Article] Crystal chemistry and oxidation state of Fe of Fe-rich prehnite from hydrothermally altered dolerite (2018)
  • Author(s): Nagashima, M., Iwasa, K. and Akasaka, M.
  • Journal Title: Mineralogy and Petrology Volume: 112 Issue: 2 Pages: 173-184
  • DOI: 10.1007/s00710-017-0530-2
  • Peer Reviewed
• [Journal Article] Murakamiite, LiCa2Si3O8(OH), a Li-analogue of pectolite, from the Iwagi Islet, southwest Japan (2017)
  • Author(s): Imaoka, T., Nagashima, M., Kano, T., Kimura, J-I., Chang, Q., and Fukuda, C
  • Journal Title: European Journal of Mineralogy Volume: 29 Issue: 6 Pages: 1045-1053
  • DOI: 10.1127/ejm/2017/0029-2675
  • Peer Reviewed
• [Journal Article] Tectonic implications of Early Miocene OIB magmatism in a near-trench setting: The Outer Zone of SW Japan and the northernmost Ryukyu Islands (2017)
  • Author(s): Kazuo Kiminami, Teruyoshi Imaoka, Kazuki Ogura, Hiroshi Kawabata, Hideo Ishizuka, Yasushi Mori
  • Journal Title: Journal of Asian Earth Sciences Volume: 135 Pages: 291-302
  • DOI: 10.1016/j.jseaes.2016.12.033
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Petrogenesis of an Early Cretaceous lamprophyre dike from Kyoto Prefecture, Japan: implications for the generation of high-Nb basalt magmas in subduction zones. (2017)
  • Author(s): Imaoka T., Kawabata H., Nagashima M., Nakashima K., Kamei A., Yagi K., Itaya T., Kiji M
  • Journal Title: Lithos Volume: 290-291 Pages: 189-33
  • DOI: 10.1016/j.lithos.2017.07.023
  • Peer Reviewed
• [Journal Article] Precipitates within olivine phenocrysts in oxidized andesitic scoria from Kasayama volcano, Hagi, Japan (2017)
  • Author(s): Ejima, T., Yamada, M., Akasaka, M., Ohfuji, H., Kon, Y., Nagashima, M. and Nakamuta, Y
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 112 Issue: 3 Pages: 116-126
  • DOI: 10.2465/jmps.161219
  • NAID: 130007348400
  • ISSN: 1345-6296, 1349-3825
  • Peer Reviewed / Open Access
• [Journal Article] Cretaceous Ofuku pluton and its relation to mineralization in the western Akiyoshi Plateau, Yamaguchi Prefecture, Japan (2016)
  • Author(s): Sasaki, Y., Imaoka, T., Nagashima, M., Nakashima, K., Sonehara, T., Yagi, K., and Itaya, T.
  • Journal Title: Resource Geology Volume: 66 Issue: 2 Pages: 85-113
  • DOI: 10.1111/rge.12090
  • NAID: 40020811523
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Thermal stability of barrerite and Na-exchanged barrerite: An in-situ single crystal X-ray diffraction study under dry conditions (2016)
  • Author(s): Cametti G, Armbruster T, Nagashima M
  • Journal Title: Microporous and Mesoporous Materials Volume: 236 Pages: 71-78
  • DOI: 10.1016/j.micromeso.2016.08.023
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dehydration and thermal stability of elpidite: An in-situ single crystal X-ray diffraction study. (2016)
  • Author(s): Cametti, G., Armbruster, T. and Nagashima. M.
  • Journal Title: Microporous and Mesoporous Materials Volume: 227 Pages: 81-87
  • DOI: 10.1016/j.micromeso.2016.02.049
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ore and skarn mineralogy of the Yamato mine, Yamaguchi Prefecture, Japan with emphasis on silver-, bismuth-, cobalt-, and tin-bearing sulfides. (2016)
  • Author(s): Nagashima, M., Akasaka, M., and Morifuku, Y.
  • Journal Title: Resource Geology Volume: 66 Issue: 1 Pages: 37-54
  • DOI: 10.1111/rge.12085
  • NAID: 40020726965
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 島根半島三津地域に分布する熱水変質ドレライトに産するぶどう石の産状と化学組成の関係 (2016)
  • Author(s): 永嶌 真理子・岩佐 清香・赤坂 正秀
  • Journal Title: 島根大学地球資源環境学研究報告 Volume: 34 Pages: 1-8
• [Journal Article] The Cretaceous Ofuku pluton and its relation to mineralization in the westyern Akiyoshi Plateau, Yamaguchi Prefecture, Japan (2016)
  • Author(s): Sasaki, Y., Imaoka, T., Nagashima, M., Nakashima, K., Sonehara, T., Yagi, K., and Itaya, T.
  • Journal Title: Resource Geology Volume: 66 Pages: 85-113
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 山口県蓋井島花崗岩に記録されたマグマ混交・混合現象 (2015)
  • Author(s): 今岡照喜・小林実和・曽根原崇文
  • Journal Title: 地質技術 Volume: 5 Pages: 37-52
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Perettiite-(Y), Y3+2Mn2+4Fe2+[Si2B8O24], a new mineral from Momeik, Myanmar. (2015)
  • Author(s): Danisi, R., Armbruster, T., Libowitzky, E., Wang, H.A.O., Gunther, D., Nagashima, M., Reusser, E., and Bieri, W.
  • Journal Title: European Journal of Mineralogy Volume: 27 Issue: 6 Pages: 793-803
  • DOI: 10.1127/ejm/2015/0027-2483
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ferriakasakaite-(La) and ferriandrosite-(La): new epidote-supergroup minerals from Ise, Mie Prefecture, Japan. (2015)
  • Author(s): Nagashima, M., Nishio-Hamane, D., Tomita, N., Minakawa, T., and Inaba. S.
  • Journal Title: Mineralogical Magazine Volume: 79 Issue: 3 Pages: 735-753
  • DOI: 10.1180/minmag.2015.079.3.16
  • NAID: 130007617639
  • Peer Reviewed / Open Access
• [Presentation] Anatomy of the Cretaceous Ushikiri-yama granodiorite, north Kyushu, SW Japan: Internal structure of a pluton, and its genesis (2018)
  • Author(s): Eshima, K., Owada, M., Imaoka, T. and Kamei, K.
  • Organizer: JpGU Meeting 2018
• [Presentation] Magma processes of the plutonic rocks in the Susuma region, Yamaguchi Prefecture, SW Japan: Implications for Cretaceous magmatism in active continental margin (2018)
  • Author(s): Kodama, S., Owada, M., Imaoka, T., Kamei, A.
  • Organizer: JpGU meeting 2018
• [Presentation] マグマ起源緑簾石を含む平尾花崗閃緑岩の定置過程 (2018)
  • Author(s): 村岡やよい，大和田正明，今岡照喜，亀井淳志
  • Organizer: 日本地質学会西日本支部29年度総会・第169回例会
• [Presentation] 島根県三津産Feに富むぶどう石の産状と結晶化学 (2017)
  • Author(s): 永嶌 真理子，岩佐 清香，赤坂 正秀
  • Organizer: 2017年度日本鉱物科学会年会
• [Presentation] Magma process of the Ushikiri-yama granodiorite, north Kyushu, SW Japan: Implication for formation of middle crust (2017)
  • Author(s): Eshima, K., Owada, M. and Imaoka, T.
  • Organizer: JpGU-AGU joint Meeting 2017
• [Presentation] 山陰帯隠岐の島の島後南谷花崗岩の成因と位置づけ (2017)
  • Author(s): 亀井淳志，山本奈穂，早坂康隆，今岡照喜
  • Organizer: 2017年度日本鉱物科学会年会
• [Presentation] 含水準輝石族鉱物におけるLi と Na置換と水素結合システム (2016)
  • Author(s): 永嶌真理子・今岡照喜・福田千紘・Thomas Pettke
  • Organizer: 日本鉱物学会
  • Place of Presentation: 金沢大学理工学研究域(石川県・金沢市)
  • Year and Date: 2016-09-23
• [Presentation] 岩城島に産するアルビタイトの鉱物組合せと化学組成 (2016)
  • Author(s): 秋田幸穂・今岡照喜・永嶌真理子・田中敏弥
  • Organizer: 日本地質学会
  • Place of Presentation: 日本大学文理学部3号館(東京都・世田谷区)
  • Year and Date: 2016-09-10
• [Presentation] ドイツKreimbach-Kaulbach産Julgoldite-(Fe3+)の結晶化学. (2015)
  • Author(s): 永嶌 真理子
  • Organizer: 2015年度日本鉱物科学会年会
  • Place of Presentation: 東京大学（東京都文京区）
  • Year and Date: 2015-09-25
• [Presentation] アジア大陸東縁における後期白亜紀イグニンブライト・フレアアップ：西中国カルデラ群の例 (2015)
  • Author(s): 今岡照喜・君波和雄・早坂康隆・馬傷園明・木村元・大中翔平・井川寿之・岸 司・吉田健司
  • Organizer: 日本地質学会第１２２年学術大会
  • Place of Presentation: 信州大学長野キャンパス(長野県長野市)
  • Year and Date: 2015-09-11
• [Book] The Geology of Japan (2016)
  • Author(s): Nakajima, T., Takahashi, M., Imaoka, T., Shimura, T.(Moreno, T. et ak. eds.)
  • Total Pages: 522
  • Publisher: Geological Society, London
• [Book] The Geology of Japan (2016)
  • Author(s): Nakajima, T., Takahashi, M., Imaoka, T., and Shimura, T.
  • Total Pages: 522
  • Publisher: The Geological Society of London
• [Remarks] リチウムを含む新鉱物を発見！「村上石」と命名！！
  • URL: http://www.yamaguchi-u.ac.jp/weeklynews/2016/_5670.html