Tropical radiolarian biostratigraphy during the Neogene in the central Indian Ocean and eastern equatorial Pacific

• Project/Area Number: 18K03819
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 17050:Biogeosciences-related
• Research Institution: Ibaraki University
• Principal Investigator: Shin-ichi Kamikuri 茨城大学, 教育学部, 准教授 (00612152)
• Co-Investigator(Kenkyū-buntansha): 伊藤 孝 茨城大学, 教育学部, 教授 (10272098) ; 西 弘嗣 福井県立大学, 恐竜学研究所, 教授 (20192685) ; 岩井 雅夫 高知大学, 教育研究部自然科学系理工学部門, 教授 (90274357)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 中新世 / 放散虫化石 / 生層序 / 出現イベント / 消滅イベント / 同時性と異時性 / インドネシア海峡 / 放散虫 / インド洋 / 前期中新世 / 新化石帯 / 新種 / 放散虫化石層序 / 赤道インド洋 / 前期～中期中新世 / ５つの化石帯 / 36の放散虫基準面 / 熱帯海中気候事件 / スーパーエルニーニョ

Outline of Final Research Achievements

Detailed biostratigraphic study of a lower Neogene section with radiolarians from central Indian ODP Site 714 has resulted in the precise correlation of many radiolarian bioevents with calcareous nannofossil and planktonic foraminiferal biostratigraphy. Comparison of results from Site 714 with those of previous studies from the tropical Pacific Ocean enables identification of synchroneity and diachroneity of radiolarian datum events between the tropical Indian and Pacific Oceans. Patterns of synchroneity and diachroneity of first occurrences were different near the middle/late Miocene boundary. Changes in these patterns might to have been influenced by the effective closure of the Indo-Pacific seaway. In contrast, the large majority of last occurrences showed synchroneity from the tropical Indian and Pacific Oceans during the early to late Miocene. This suggests that last occurrences during the early to late Miocene were affected by global climatic or oceanographic events.

Academic Significance and Societal Importance of the Research Achievements

インドネシア海峡が閉塞すると，赤道太平洋の東向きの赤道反流が形成されることによって熱帯・赤道循環の原型が誕生する．熱帯・赤道循環の誕生は，西部太平洋に暖水塊を形成し，日本列島へ北上する黒潮の勢力を一段と強化するため，日本列島を含む太平洋の環境に大きな影響を与えると考えられる．　しかしインドネシア海峡の閉鎖した年代は，前期中新世末（17 Ma頃）および後期中新世初期（10 Ma頃）の大きく２つの説があった．本研究によって，効果的に閉塞したのは後期中新世初期（10 Ma頃）である可能性が高くなった．

Research Products

• [Int'l Joint Research] GNS Science(ニュージーランド)
• [Int'l Joint Research] Michigan University(米国)
• [Int'l Joint Research] Michigan University(米国)
• [Int'l Joint Research] Michigan University(米国)
• [Journal Article] Tropical radiolarian biostratigraphy from the early to late Miocene at ODP Site 714 in the tropical Indian Ocean (2021)
  • Author(s): Shin-ichi Kamikuri
  • Journal Title: Paleontological Research Volume: -
  • Peer Reviewed / Open Access
• [Journal Article] Changes in morphological parameters of the radiolarian Podocyrtis (Lampterium) lineage from the middle Eocene in the tropical Pacific (2021)
  • Author(s): Michiyo Watanabe, Shungo Kawagata, Yoshiaki Aita, Noritoshi Suzuki, Shin-ichi Kamikuri
  • Journal Title: palaeoecology palaeoclimatology palaeogeography Volume: -
  • Peer Reviewed / Open Access
• [Journal Article] Progressive ocean oxygenation at 2.2 Ga inferred from geochemistry and molybdenum isotopes of the Nsuta Mn deposit, Ghana (2021)
  • Author(s): Kosuke T. Goto, Yasuhito Sekine, Takashi Ito, Katsuhiko Suzuki, Ariel D. Anbar, Gwyneth W. Gordon, Yumiko Harigane, Teruyuki Maruoka, Gen Shimoda, Teruhiko Kashiwabara, Yutaro Takaya, Tatsuo Nozaki, James R. Hein, George M. Tetteh, Frank K. Nyame, Shoichi Kiyokawa
  • Journal Title: Chemical Geology Volume: 567
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Temperature effects on the shell growth of a larger benthic foraminifer (Sorites orbiculus): Results from culture experiments and micro X-ray computed tomography (2021)
  • Author(s): Kinoshita, S., Kuroyanagi, A., Kawahata, H., Fujita, K., Ishimura, T., Suzuki, A., Sasaki, S., Nishi, H.
  • Journal Title: Marine Micropaleontology Volume: 163 Pages: 101960-101960
  • DOI: 10.1016/j.marmicro.2021.101960
  • Peer Reviewed / Open Access
• [Journal Article] Amundsen Sea West Antarctic Ice Sheet History (2021)
  • Author(s): Gohl, K., Wellner, J.S., Klaus, A., Bauersachs, T., Bohaty, S.M., Courtillat, M., Cowan, E.A., De Lira Mota, M.A., Esteves, M.S.R., Eegyveresi, J.M., Frederichs, T., Gao, L., Halberstadt, A.R., Hillenbrand, C.-D., Horikawa, K., Iwai, M., Kim, J.-H., King, T.M., Klages, J.P., Passchier, S., Penkrot, M.J., et.al.
  • Journal Title: Proceedings of the International Ocean Discovery Program Volume: 379
  • DOI: 10.14379/iodp.proc.379.2021
  • Open Access / Int'l Joint Research
• [Journal Article] Expedition 379 summary (2021)
  • Author(s): Gohl, K., Wellner, J.S., Klaus, A., Bauersachs, T., Bohaty, S.M., Courtillat, M., Cowan, E.A., De Lira Mota, M.A., Esteves, M.S.R., Eegyveresi, J.M., Frederichs, T., Gao, L., Halberstadt, A.R., Hillenbrand, C.-D., Horikawa, K., Iwai, M., Kim, J.-H., King, T.M., Klages, J.P., Passchier, S., Penkrot, M.J., et.al.
  • Journal Title: Proceedings of the International Ocean Discovery Program Volume: 379 Pages: 1-21
  • DOI: 10.14379/iodp.proc.379.101.2021
  • ISBN: 9781954252714
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Expedition 379 methods (2021)
  • Author(s): Gohl, K., Wellner, J.S., Klaus, A., Bauersachs, T., Bohaty, S.M., Courtillat, M., Cowan, E.A., De Lira Mota, M.A., Esteves, M.S.R., Eegyveresi, J.M., Frederichs, T., Gao, L., Halberstadt, A.R., Hillenbrand, C.-D., Horikawa, K., Iwai, M., Kim, J.-H., King, T.M., Klages, J.P., Passchier, S., Penkrot, M.J., et.al.
  • Journal Title: Proceedings of the International Ocean Discovery Program Volume: 379 Pages: 1-42
  • DOI: 10.14379/iodp.proc.379.102.2021
  • ISBN: 9781954252714
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Site U1532 (2021)
  • Author(s): Wellner, J.S., Gohl, K., Klaus, A., Bauersachs, T., Bohaty, S.M., Courtillat, M., Cowan, E.A., De Lira Mota, M.A., Esteves, M.S.R., Eegyveresi, J.M., Frederichs, T., Gao, L., Halberstadt, A.R., Hillenbrand, C.-D., Horikawa, K., Iwai, M., Kim, J.-H., King, T.M., Klages, J.P., Passchier, S., Penkrot, M.J., et.al.
  • Journal Title: Proceedings of the International Ocean Discovery Program Volume: 379 Pages: 1-47
  • DOI: 10.14379/iodp.proc.379.103.2021
  • ISBN: 9781954252714
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Site U1533 (2021)
  • Author(s): Wellner, J.S., Gohl, K., Klaus, A., Bauersachs, T., Bohaty, S.M., Courtillat, M., Cowan, E.A., De Lira Mota, M.A., Esteves, M.S.R., Eegyveresi, J.M., Frederichs, T., Gao, L., Halberstadt, A.R., Hillenbrand, C.-D., Horikawa, K., Iwai, M., Kim, J.-H., King, T.M., Klages, J.P., Passchier, S., Penkrot, M.J., et.al.
  • Journal Title: Proceedings of the International Ocean Discovery Program Volume: 379
  • Open Access / Int'l Joint Research
• [Journal Article] Variation in the eastern North Pacific subtropical gyre (California Current system) during the Middle to Late Miocene as inferred from radiolarian assemblages (2020)
  • Author(s): Shin-ichi Kamikuri , and Isao Motoyama
  • Journal Title: Marine Micropaleontology Volume: 155 Pages: 1-17
  • DOI: 10.1016/j.marmicro.2019.101817
  • Peer Reviewed / Open Access
• [Journal Article] An integrated cross-latitude event stratigraphy for Paleogene radioalrians (2020)
  • Author(s): Hollis, C., Pascher, K.M., Sanfilippo, A., Nishimura, A., Kamikuri, S., Shepherd, C.L.
  • Journal Title: Stratigraphy Volume: 17 Pages: 213-278
  • DOI: 10.29041/strat.17.4.213-278
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] What drove the evolutionary trend of planktic foraminifers during the Cretaceous: Oceanic Anoxic Events (OAEs) directly affected it? (2020)
  • Author(s): Kuroyanagi Azumi、Kawahata Hodaka、Ozaki Kazumi、Suzuki Atsushi、Nishi Hiroshi、Takashima Reishi
  • Journal Title: Marine Micropaleontology Volume: 161 Pages: 101924-101924
  • DOI: 10.1016/j.marmicro.2020.101924
  • Peer Reviewed / Open Access
• [Journal Article] Variations in trace elements, isotopes, and organic geochemistry during the Hangenberg Crisis, Devonian-Carboniferous transition, northeastern Vietnam (2020)
  • Author(s): Shizuya, A., Oba, M., Ando, T., Ogata, Y., Takashima, R., Nishi, H. Komatsu, T., Nguyen, D.P.
  • Journal Title: Island Arc Volume: 29 Issue: 1 Pages: 1-20
  • DOI: 10.1111/iar.12337
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Changes in upper ocean hydrography and productivity across the Middle Eocene Climatic Optimum: Local insights and global implications from the Northwest Atlantic (2020)
  • Author(s): Arimoto Jun、Nishi Hiroshi、Kuroyanagi Azumi、Takashima Reishi、Matsui Hiroki、Ikehara Minoru
  • Journal Title: Global and Planetary Change Volume: 193 Pages: 103258-103258
  • DOI: 10.1016/j.gloplacha.2020.103258
  • Peer Reviewed / Open Access
• [Journal Article] Identification of the source caldera for a Pliocene ash-flow tuff in Northeast Japan based on apatite trace-element compositions and zircon U-Pb ages (2020)
  • Author(s): Takashima Reishi、Kusakawa Haruka、Kuwabara Sato、Orihashi Yuji、Nishi Hiroshi、Niwano Michio、Yoshida Takeyoshi
  • Journal Title: Journal of Volcanology and Geothermal Research Volume: 401 Pages: 106948-106948
  • DOI: 10.1016/j.jvolgeores.2020.106948
  • Peer Reviewed / Open Access
• [Journal Article] Radiolarians and geologic age of Neogene stratiform manganese deposits in the Fukaura District, Aomori Prefecture, Japan (2019)
  • Author(s): 坂井 志緒乃, 伊藤 孝, 上栗 伸一, 本山 功, 小室 光世
  • Journal Title: The Journal of the Geological Society of Japan Volume: 125 Issue: 4 Pages: 297-305
  • DOI: 10.5575/geosoc.2018.0070
  • NAID: 130007688864
  • ISSN: 0016-7630, 1349-9963
  • Year and Date: 2019-04-15
  • Peer Reviewed / Open Access
• [Journal Article] Middle to late Miocene radiolarians from ODP Site 1021 in the eastern North Pacific (2019)
  • Author(s): Shin-ichi Kamikuri
  • Journal Title: BULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN Volume: 70 Issue: 1-2 Pages: 163-194
  • DOI: 10.9795/bullgsj.70.163
  • NAID: 130007631548
  • ISSN: 1346-4272, 2186-490X
  • Year and Date: 2019-03-29
  • Peer Reviewed / Open Access
• [Journal Article] Radiolarian assemblages from the lower to middle Miocene at IODP Site U1335 in the eastern equatorial Pacific (2019)
  • Author(s): Shin-ichi Kamikuri
  • Journal Title: BULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN Volume: 70 Issue: 1-2 Pages: 137-161
  • DOI: 10.9795/bullgsj.70.137
  • NAID: 130007631554
  • ISSN: 1346-4272, 2186-490X
  • Year and Date: 2019-03-29
  • Peer Reviewed / Open Access
• [Journal Article] Radiolarian biostratigraphy and faunal turnover across the early/middle Miocene boundary in the equatorial Pacific (2019)
  • Author(s): Shin-ichi Kamikuri, Ted Moore, Hiroki Matsui, Hiroshi Nishi
  • Journal Title: Paleontological Research Volume: 23 Issue: 4 Pages: 245-246
  • DOI: 10.2517/2018pr024
  • NAID: 210000157243
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Radiolarian biostratigraphy and faunal turnover across the early/middle Miocene boundary in the equatorial Pacific (2019)
  • Author(s): Kamikuri, S., Moore, T., Matsui, H., Nishi, H.
  • Journal Title: Paleontological Research Volume: 印刷中
  • NAID: 210000157243
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 青森県深浦地域に分布する新第三系層状マンガン鉱床の放散虫化石と地質年代 (2019)
  • Author(s): 坂井志緒乃，伊藤 孝，上栗伸一，本山 功，小室光世
  • Journal Title: 地質学雑誌 Volume: 印刷中
  • NAID: 130007688864
  • Peer Reviewed / Open Access
• [Journal Article] Cretaceous radiolarian biostratigraphy in the Yezo Group, Hokkaido, Northeast Japan (2019)
  • Author(s): Koyasu Hiromichi、Nishi Hiroshi、Takashima Reishi、Suzuki Noritoshi
  • Journal Title: Newsletters on Stratigraphy Volume: 52 Issue: 3 Pages: 297-319
  • DOI: 10.1127/nos/2018/0357
  • Peer Reviewed / Open Access
• [Journal Article] aleoceanographic history of the Japan Sea over the last 9.5 million years inferred from radiolarian assemblages (IODP Expedition 346 Sites U1425 and U1430) (2018)
  • Author(s): Matsuzaki, K. M., Itaki, T., Tada, R., Kamikuri, S.
  • Journal Title: Progress in Earth and Planetary Science Volume: 5 Issue: 1 Pages: 1-33
  • DOI: 10.1186/s40645-018-0204-7
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Effect of Euxinic Conditions on Planktic Foraminifers: Culture Experiments and Implications for Past and Future Environments (2018)
  • Author(s): Azumi Kuroyanagi, Takashi Toyofuku, Yukiko Nagai, Katsunori Kimoto, Hiroshi Nishi, Reishi Takashima, and Hodaka Kawahata
  • Journal Title: Paleoceanography Volume: 34 Pages: 1-12
  • Peer Reviewed / Open Access
• [Journal Article] Constraining the depositional age of an Upper Cretaceous non-marine and shallow marine siliciclastic succession, Kuji Group, northeastern Japan, based on carbon isotope stratigraphy and U?Pb radiometric dating (2018)
  • Author(s): Arimoto Jun、Takashima Reishi、Nishi Hiroshi、Yamanaka Toshiro、Orihashi Yuji、Jo Shota、Yamamoto Koshi、Umetsu Keita
  • Journal Title: Cretaceous Research Volume: 92 Pages: 264-278
  • DOI: 10.1016/j.cretres.2018.08.007
  • Peer Reviewed / Open Access
• [Journal Article] 縞状鉄鉱層のEPMA 元素マッピング：エジプト東砂漠地帯エルダバァ層鉄鉱層と他地域の鉄鉱層との比較 (2018)
  • Author(s): 鈴木大志・清川昌一・伊藤 孝
  • Journal Title: 茨城大学教育学部紀要（自然科学） Volume: 67 Pages: 37-55
  • NAID: 120006395528
  • Open Access
• [Journal Article] 19億年前の深海底堆積岩の特徴：カナダ・フリンフロン帯における掘削コアTS07-01の岩石記載―3 (2018)
  • Author(s): 元村健人・伊藤 孝・清川昌一・Dave Price
  • Journal Title: 茨城大学教育学部紀要（自然科学） Volume: 67 Pages: 57-76
  • NAID: 120006395529
  • Open Access
• [Journal Article] Maastrichtian carbon isotope stratigraphy and cyclostratigraphy of the Newfoundland Margin (Site U1403, IODP Leg 342) (2016)
  • Author(s): Friedrich, O., Batenburg, S. J., Moriya, K., Voigt, S., Cournede, C., Mobius, I., Blum, P., Bornemann, A., Fiebig, J., Hasegawa, T., Hull, P. M., Norris, R. D., Rohl, U., Westerhold, T., Wilson, P. A., and IODP Expedition 342 Scientists
  • Journal Title: Climate of the Past, Discussion Volume: － Pages: 1-21
  • DOI: 10.5194/cp-2016-51
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] 前期～中期中新世における赤道インド洋の放散虫化石層序 (2019)
  • Author(s): 上栗伸一，松崎賢史，伊藤孝，西弘嗣，岩井雅夫
  • Organizer: MRC2019
• [Presentation] 前期～中期中新世における赤道インド洋の放散虫化石層序 (2019)
  • Author(s): 上栗伸一，松崎賢史，伊藤孝，西弘嗣，岩井雅夫
  • Organizer: MRC研究集会
• [Presentation] Paleoceanography of the Japan Sea during the late Miocene inferred from radiolarian data (IODP Exp. 346 Site U1425 & U1430) (2018)
  • Author(s): Matsuzaki, K. M., Itaki, T., Tada, R., Kamikuri, S.
  • Organizer: International Conference in Marine Geology 9th
  • Int'l Joint Research
• [Presentation] 放散虫化石群集に基づく東赤道太平洋における前期/中期中新世境界付近の海洋環境変遷 (2018)
  • Author(s): 上栗伸一，Ted Moore
  • Organizer: 古生物学会
• [Presentation] 第四紀後期アラビアモンスーン残像ーIODP Exp.355珪藻化石から- (2018)
  • Author(s): 岩井雅夫
  • Organizer: 古生物学会
• [Presentation] I-III班：黒潮の時空間変遷史の研究ー海の現在・過去・未来をコアから探る (2018)
  • Author(s): 岩井雅夫
  • Organizer: 「4次元統合黒潮資源学の創成」中間評価報告会
• [Presentation] Miocene-Pliocene diatom biochronology in the Southern Ocean: Results from ODP Leg 178 and IODP Exp.318 (2018)
  • Author(s): Iwai
  • Organizer: 6th Polar Marine Diatom Workshop. Iowa Lakeside Lab Regents Resource Center, Milford, Iowa USA
  • Int'l Joint Research
• [Presentation] 東部赤道太平洋海域の下部鮮新統石灰質ナノ化石層序と表層海洋環境 (2018)
  • Author(s): 今西祐貴・亀尾浩司・岩井雅夫
  • Organizer: 日本地質学会札幌大会
• [Presentation] 室戸沖南海トラフ陸側斜面閉鎖海盆柱状堆積物中のマンガンプロファイル (2018)
  • Author(s): 岩井雅夫
  • Organizer: シンポジウム「海底マンガン鉱床の地球科学II -環境・開発・地球史- 」