Elucidation of the dynamic magma system by precise time-scale evaluation

• Project/Area Number: 23340160
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: Okayama University
• Principal Investigator: NAKAMURA Eizo 岡山大学, 地球物質科学研究センター, 教授 (80201672)
• Co-Investigator(Kenkyū-buntansha): MAKISHIMA Akio 岡山大学, 地球物質科学研究センター, 教授 (70219301) ; TANAKA Ryouji 岡山大学, 地球物質科学研究センター, 准教授 (00379819) ; KOBAYASHI Katsura 岡山大学, 地球物質科学研究センター, 准教授 (20325129)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000); Fiscal Year 2013: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2012: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2011: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
• Keywords: マグマダイナミクス / U-Th-Ra / 放射非平衡 / 表面電離型質量分析計 / マルチコレクションICP-MS / 富士火山 / 斑晶鉱物 / K-Ar年代測定 / U-Th-Ra放射年代 / 噴火年代 / 三瓶火山 / 結晶成長カイネティクス / マルチコレクションICP質量分析計

Research Abstract

In order to understand the dynamic magma system of volcanoes, we attempted to develop new age dating methods then applied them to natural volcanic ejecta. Consequently, we established new U-Th-Ra disequilibrium dating method by using multi collection ICP-MS, and determined the duration of magma supply sequences of Fuji volcano. Additionally, we examined new K-Ar dating combining the spiked and the unspiked sensitivity method to determine eruption ages less than 0.1 Myrs. This method could be successfully applied for lavas from Bratan volcano in Indonesia. The dynamic eruption model regarding supervolcan eruptions driven by melt buoyancy was established.

Research Products

• [Journal Article] Supervolcano eruptions driven by melt buoyancy in large silicic magma chambers (2014)
  • Author(s): Malfait, J. W., Seifert, R., Petitgirard, S., Perrillat, J., Mezouar, M., Ota, T., Nakamura, E., Philippe, L., Sanchez-Valle, C.
  • Journal Title: Nature Geoscience Volume: 7 Issue: 2 Pages: 122-125
  • DOI: 10.1038/ngeo2042
  • Peer Reviewed
• [Journal Article] Sediment-enriched adakitic magmas from the Daisen volcanic field, Southwest Japan (2013)
  • Author(s): Feineman, M., Moriguti, T., Yokoyama, T., Terui, S. and Nakamura, E.
  • Journal Title: Geochem. Geophys. Geosystem Volume: 14 Issue: 8 Pages: 3009-3031
  • DOI: 10.1002/ggge.20176
  • Peer Reviewed
• [Journal Article] K-Ar analyses of the post-caldera lavas of Bratan volcano in Bali Island , Indonesia-Ar isotope mass fractionation to light isotope enrichment (2013)
  • Author(s): Ryu, S., Kitagawa, H., Nakamura, E., Itaya, T., Watanabe, K.
  • Journal Title: J. Volcanol. Geotherm. Res. Volume: 264 Pages: 107-116
  • DOI: 10.1016/j.jvolgeores.2013.07.002
• [Journal Article] Petrology,Trace Element and Sr, Nd, Hf Isotope Geochemistry of the North Lanzo Peridotite Massif (Western Alps, Italy) (2012)
  • Author(s): Guarnieri, L., Nakamura, E., Piccardo, G. B., Sakaguchi, C., Shimizu, N., Vannucci, R., Zanetti, A.
  • Journal Title: Journal of Petrology Volume: 53 Issue: 11 Pages: 1-48
  • DOI: 10.1093/petrology/egs049
  • Peer Reviewed
• [Journal Article] Inherited Pb isotopic records in olivine antecryst-hosted melt inclusions from Hawaiian lavas (2012)
  • Author(s): Sakyi, P.A., Tanaka, R., Kobayashi, K., Nakamura, E
  • Journal Title: Geochimica Cosmochimica Acta Volume: 95 Pages: 169-195
  • DOI: 10.1016/j.gca.2012.07.025
  • Peer Reviewed
• [Journal Article] The Cretaceous Okhotsk-Chukotka Volcanic Belt (NE Russia) : Geology, geochronology, magma output rates, and implications on the genesis of silicic LIPs (2012)
  • Author(s): Tikhomirov, P.L., Kalinina, E.A., Moriguti, T., Hakishima, A., Kobayashi, K., Cherepanova, I.Yu., Nakamura, E.
  • Journal Title: Journal of Volcano logy and Geothermal Research Volume: 221-222 Pages: 14-32
  • DOI: 10.1016/j.jvolgeores.2011.12.011
  • Peer Reviewed
• [Journal Article] In situ ion-microprobe determination of trace element partition coefficients for hornblende, plagioclase, orthopyroxene, and apatite in equilibrium with natural rhyolitic glass, Little Glass Mountain Rhyolite, California (2011)
  • Author(s): Brophy J.G., Ota T., Kunihro T., Tsujimori T., Nakamura E.
  • Journal Title: American Mineralogist Volume: 96 Issue: 11-12 Pages: 1838-1850
  • DOI: 10.2138/am.2011.3857
  • Peer Reviewed
• [Journal Article] Timescales of magma differentiation from basalt to andesite beneath Hekla Volcano, Iceland : Constraints from U-series disequilibria in lavas from the last quarter-millennium flows (2011)
  • Author(s): Chekol, A.T., Kobayashi, K., Yokoyama, T., Sakaguchi, C., Nakamura, E.
  • Journal Title: Geochim.Cosmochim.Acta Volume: 75 Issue: 1 Pages: 256-283
  • DOI: 10.1016/j.gca.2010.10.001
  • Peer Reviewed
• [Journal Article] Geochemical evolution of historical lavas from Askja Volcano, Iceland : Implications for mechanisms and timescales of magmatic differentiation (2011)
  • Author(s): Kuritani, T., Yokoyama, T., Kitagawa, H., Kobayashi, K., Nakamura, E.
  • Journal Title: Geochim.Cosmochim.Acta Volume: 75 Issue: 2 Pages: 570-587
  • DOI: 10.1016/j.gca.2010.10.009
  • Peer Reviewed
• [Journal Article] Simultaneous Determination of Cd.In.T1 and Bi by Isotope Dilution-Internal Standardisation ICP-QMS with Corrections Using Externally Measured MoO^+/Mo^+ Ratios (2011)
  • Author(s): Makishima, A., Kitagawa, H., Nakamura, E.
  • Journal Title: Geostand.Geoanal.Res. Volume: 35 Issue: 1 Pages: 57-67
  • DOI: 10.1111/j.1751-908x.2010.00054.x
  • Peer Reviewed
• [Journal Article] Melt inclusion Pb-isotope analysis by LA MC-ICPMS : Assessment of analytical performance and application to OIB genesis (2011)
  • Author(s): Paul, B., Woodhead, J., Hergt, J., Danyushevsky, L., Kunihiro, T., Nakamura, E.
  • Journal Title: Chemical Geology Volume: 289 Issue: 3-4 Pages: 210-223
  • DOI: 10.1016/j.chemgeo.2011.08.005
  • Peer Reviewed
• [Journal Article] Trace element and Pb B Li isotope systematics of olivine-hosted melt inclusions : insights into source metasomatism beneath Stromboli (southern Italy) (2011)
  • Author(s): Schiavi, F., Kobayashi, K., Nakamura, E., Tiepolo, M., Vannucci, R.
  • Journal Title: Contrib.Mineral.Petrol. Volume: 163 Issue: 6 Pages: 1011-1031
  • DOI: 10.1007/s00410-011-0713-5
  • Peer Reviewed
• [Presentation] Space environment of an asteroid preserved on micro-grains returned by the Hayabusa spacecraft (2012)
  • Author(s): Eizo Nakamura, et al
  • Organizer: 43nd Lunar and Planetary Science Conference
  • Place of Presentation: The Woodlands Waterway Marriott Hotel and Convention Center (Texas, USA)(招待講演)
  • Year and Date: 2012-03-22
• [Presentation] Initial analysis of the Hayabusa recovery materials : Overview and high lights at Misasa (2011)
  • Author(s): Eizo Nakamura, et al
  • Organizer: 日本惑星地球科学連合
  • Place of Presentation: 幕張メッセ(千葉県)(招待講演)
  • Year and Date: 2011-06-21
• [Remarks]
  • URL: http://www.misasa.okayama-u.ac.jp
• [Remarks] 岡山大学地球物質科学研究センター
  • URL: http://www.misasa.okayama-u.ac.jp/
• [Remarks] 地球物質科学研究センターホームページ
  • URL: http://www.misasa.okayama-u.ac.jp/
• [Remarks]
  • URL: http://www.misasa.okayama-u.ac.jp/