Petrological and geochemical characteristics of lithospheric mantle and magmatism related to its evolution at the Southwest Japan arc

2011 Fiscal Year Final Research Report

• Project/Area Number: 21540495
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: Kyoto University
• Principal Investigator: YOSHIKAWA Masako 京都大学, 大学院・理学研究科, 教務補佐員 (00378605)
• Co-Investigator(Renkei-kenkyūsha): ARAI Shoji 金沢大学, 自然システム学系, 教授 (20107684) ; SHIBATA Tomoyuki 京都大学, 大学院・理学研究科, 助教 (40332720)
• Project Period (FY): 2009 – 2011
• Keywords: マグマ / 火成岩

Research Abstract

Ultramafic xenoliths from Kurose, Southwest Japan represent fragments of the lithospheric mantle beneath the back-arc of the active Southwest Japan volcano-tectonic arc. We divided the Kurose peridotite xenoliths into three types, on the basis of the Sr-Nd isotopic and trace element compositions of the clinopyroxenes in the 13 ultramafic xenoliths,(1) Japan-Sea basalt type which shows depletion of incompatible elements and similar variation of Sr-Nd isotopic compositions of Japan-Sea basalts,(2) EM I type which has similar Sr-Nd isotopic compositional range of Cenozoic balasts of Kyushu and(3) EM II type with enriched Sr-Nd isotopic composition and incompathible elements. These xenoliths would have experienced the following events ;(1) open-system partial melting of the continental lithosphere with influx of an asthenospheric melt with MORB-like isotopic composition during the back arc basin the Japan Sea opening,(2) metasomatism with the asthenospheric melt related to the Kyushu basalts.

Research Products

• [Journal Article] Genetic relationship between the post-caldera and caldera-forming magmas of Aso volcano SW Japan : Constraints from Sr isotope and trace element compositions (2011)
  • Author(s): Miyoshi, M., Shibata, T., Yoshikawa, M., Sano, T., Shinmura, T., Hasenaka, T.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 106 Pages: 114-119
  • Peer Reviewed
• [Journal Article] Trace element and Sr-Nd isotopic features of ultramafic xenoliths from Kurose (2010)
  • Author(s): Yoshikawa, M, , Arai, S., Ishida, Y., Tamura, A. and Shimizu, Y
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 105 Pages: 346-351
• [Journal Article] Geochemical and Sr. Nd isotopic characteristics and pressure-temperature estimates of mantle xenoliths from the French Massif Central : evidence for melting and multiple metasomatism by silicate-rich carbonatite and asthenospheric melts (2010)
  • Author(s): Yoshikawa, M., Kawamoto, T., Shibata, T, . and Yamamoto, J.
  • Journal Title: Geological Society Volume: v. 337 Pages: 153-175
• [Journal Article] Comparative study of ultramafic xenoliths and associated lavas from South-Eastern Sicily : nature of the lithospheric mantle and insights on magma genesis (2010)
  • Author(s): Bianchini M., Yoshikawa, M., Sapienza, G. T.
  • Journal Title: Mineral. Petrol Volume: 98 Pages: 111-121
• [Journal Article] Deciphering the trace element characteristics in Kilbourne Hole peridotite xenoliths : melt-rock interaction and metasomatism beneath the Rio Grande Rift
  • Author(s): Harvey, J. Yoshikawa, M., Hammond, SJ., Burton, KW.
  • Journal Title: Journal of Petrology Volume: (in press)
• [Presentation] 背弧に産する黒瀬マントル捕獲岩に記録されたスラブ由来成分 (2011)
  • Author(s): 芳川雅子, 荒井章司, 柴田知之, 石丸聡子
  • Organizer: 日本地球化学会第58回年会
  • Place of Presentation: 札幌市
  • Year and Date: 20110900
• [Presentation] Multiple metasomatic events recorded in Kilbourne Hole peridotite xenoliths : the relative contribution of host basalt interaction vs. silicate metasomatic glass (2010)
  • Author(s): Hammond, S J, Yoshikawa, M., Harvey, J.
  • Organizer: AGU, Fall Meet.
  • Place of Presentation: サンフランシスコUSA
  • Year and Date: 20101200
• [Presentation] 九州黒瀬かんらん岩捕獲岩の化学・同位体組成の特徴 (2010)
  • Author(s): 芳川雅子・柴田知之・石丸聡子, ほか
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 千葉県幕張
  • Year and Date: 20100500
• [Presentation] Progressive melting of a hot mantle diapir with entrainment beneath southwestern Japan (2009)
  • Author(s): Sakuyama, T., Yoshikawa, M., Shibata, T., Nakai, S., Sumino, H. Ozawa, K.
  • Organizer: AGU, Fall Meet
  • Place of Presentation: サンフランシスコUSA
  • Year and Date: 20091200
• [Presentation] 西南日本弧黒瀬マントル捕獲岩でのマントル交代作用に関与したメルト・流体の特徴 (2009)
  • Author(s): 芳川雅子, 荒井章司, 田村明弘
  • Organizer: 日本地質学会大会
  • Place of Presentation: 岡山理科大学
  • Year and Date: 20090900
• [Presentation] Melt extraction and multiple metasomatism beneath French Massif Central : Geochemical and isotopic signatures of ultramafic xenoliths (2009)
  • Author(s): Yoshikawa, M., Kawamoto, T., Shibata, T., Yamamoto, J.
  • Place of Presentation: Goldschmidt Conf.,ダボス, Switzerland
  • Year and Date: 20090600