[S-MP36] Crust-Mantle Connections

Mon. May 21, 2018 9:00 AM - 10:30 AM A08 (Tokyo Bay Makuhari Hall)

convener:Yoshihiko Tamura(R & D Center for Ocean Drilling Science, Japan Agency for Maine-Earth Science and Technology), Osamu Ishizuka(Geological Survey of Japan, AIST), Chris Conway, Chairperson:Conway Chris, Tamura Yoshihiko(JAMSTEC)

A paradigm of the solid Earth geochemical cycles is that the Earth's crust forms by melting of the Earth's upper peridotitic mantle. A new study relates crustal thickness to magma type in the Izu-Ogasawara (Bonin) and Aleutian oceanic arcs, which suggests that continental crust (andesitic magma) is produced only when the crust is thin, thus only in oceanic arcs. How diverse is the spectrum of primary melts and which factors may contribute to its variations? What is the influence of crustal processing vs. primary magma diversity in creating the diversity of the Earth's crust? The session seeks to explore the crust-mantle connections among ophiolites, at divergent and convergent plate boundaries and within-plate (or ocean island??) settings based on volcanology, petrology, geochemistry, geophysics, geochronology, and geodynamics studies.

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9:00 AM - 9:15 AM

[SMP36-07] Magma genesis in Hawaii plume: melting experiments on basalt/peridotite layered sample up to 8 GPa

★Invited Papers

*Eiichi Takahashi^1,2, Shan Gao² (1.Guangzhou Institute of Geochemistry, Chinese Academy of Science, 2.Earth & Planetary Sciences, Tokyo Institute of Technology)

9:15 AM - 9:30 AM

[SMP36-08] Formation of two oceanic large igneous provinces in the western Pacific Ocean

★Invited Papers

*Takashi Sano¹ (1.National Museum of Nature and Science)

9:30 AM - 9:45 AM

[SMP36-09] Origin and variability of Izu-Bonin-Mariana arc basement

*Osamu Ishizuka^1,7, Kenichiro Tani², Yumiko Harigane¹, Susumu Umino³, Kyoko Kanayama⁴, Izumi Sakamoto⁵, Toshitsugu Yamazaki⁶ (1.Geological Survey of Japan, AIST, 2.National Museum of Nature and Science, 3.Kanazawa University, 4.Tottori Prefecture, 5.Tokai University, 6.AORI, University of Tokyo, 7.JAMSTEC)

9:45 AM - 10:00 AM

[SMP36-10] Magnesian andesites from the Kibblewhite volcano, Kermadec arc

*Yasuhiro Hirai^1,2, Yoshihiko Tamura², Kaj Hoernle³, Reinhard Werner³, Folkmar Hauff³, Christian Timm⁴, Takashi Miyazaki², Bogdan Vaglarov² (1.Graduate School of Natural Science and Technology, Kanazawa University, Japan & Japan Agency for Marine-Earth Science and Technology , 2.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3.GEOMAR Helmholz Centre for Ocean Research, 4.GNS Science)

10:00 AM - 10:15 AM

[SMP36-11] Geodynamic reconstruction of Eocene subduction initiation along Philippine Sea Plate margins

★Invited Papers

*Americus Perez¹, Susumu Umino¹, Graciano P. Yumul Jr.², Osamu Ishizuka³ (1.Kanazawa University, 2.Apex Mining Company Inc. , 3.Geological Survey of Japan)

10:15 AM - 10:30 AM

[SMP36-12] Generation of mixed calc-alkaline andesite: A case study at Rishiri volcano, Northern Hokkaido

*Hajime Taniuchi¹, Takeshi Kuritani², Mitsuhiro Nakagawa² (1.Graduate school of Science, Hokkaido University, 2.Faculty of Science, Hokkaido University)

Session information

[S-MP36] Crust-Mantle Connections

[SMP36-07] Magma genesis in Hawaii plume: melting experiments on basalt/peridotite layered sample up to 8 GPa

★Invited Papers

[SMP36-08] Formation of two oceanic large igneous provinces in the western Pacific Ocean

★Invited Papers

[SMP36-09] Origin and variability of Izu-Bonin-Mariana arc basement

[SMP36-10] Magnesian andesites from the Kibblewhite volcano, Kermadec arc

[SMP36-11] Geodynamic reconstruction of Eocene subduction initiation along Philippine Sea Plate margins

★Invited Papers

[SMP36-12] Generation of mixed calc-alkaline andesite: A case study at Rishiri volcano, Northern Hokkaido

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