Solid Earth Sciences(S)
Session Sub-categoryMineralogy & Petrology
Session IDS-MP36
TitleCrust-Mantle Connections
Short TitleCrust-Mantle Connections
Main ConvenerNameYoshihiko Tamura
AffiliationR & D Center for Ocean Drilling Science, Japan Agency for Maine-Earth Science and Technology
Co-Convener 1NameOsamu Ishizuka
AffiliationGeological Survey of Japan, AIST
Co-Convener 2NameChris Conway
AffiliationNational Museum of Nature and Science
Session LanguageEE
Scope 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.
Presentation FormatOral and Poster presentation
Co-Sponsoring Societies
(Society Members)
The Volcanological Society of Japan, The Geological Society of Japan
Invited Authors
  • Susumu Umino (Department of Earth Sciences, Kanazawa University)
  • Tomoaki Morishita (School of Natural System, Colleage of Science and Technology, Kanazawa University)
  • Marie Python (Hokkaido University Department of Natural History Science Division of Earth and Planetary Systems Sciences)
  • Eiichi Takahashi (Guangzhou Institute of Geochemistry, Chinese Academy of Science, Earth & Planetary Sciences, Tokyo Institute of Technology)
  • Takashi Sano (National Museum of Nature and Science)
  • Americus Perez (Kanazawa University)
Time Presentation No Title Presenter Abstract
Oral Presentation May 21 AM1
13:45 - 14:00 SMP36-07Magma genesis in Hawaii plume: melting experiments on basalt/peridotite layered sample up to 8 GPaEiichi Takahashi Abstract
14:00 - 14:15 SMP36-08Formation of two oceanic large igneous provinces in the western Pacific OceanTakashi Sano Abstract
14:15 - 14:30 SMP36-09Origin and variability of Izu-Bonin-Mariana arc basementOsamu Ishizuka Abstract
14:30 - 14:45 SMP36-10Magnesian andesites from the Kibblewhite volcano, Kermadec arcYasuhiro Hirai Abstract
14:45 - 15:00 SMP36-11Geodynamic reconstruction of Eocene subduction initiation along Philippine Sea Plate marginsAmericus Perez Abstract
15:00 - 15:15 SMP36-12Generation of mixed calc-alkaline andesite: A case study at Rishiri volcano, Northern HokkaidoHajime Taniuchi Abstract
Oral Presentation May 21 AM2
10:45 - 11:00 SMP36-01Conversion tectonics from spreading to subduction: Paleostress field analysis of dike swarms of the V2 arc volcanism in the Oman OphioliteSusumu Umino Abstract
11:00 - 11:15 SMP36-02The uppermost mantle section of a matured arc: an example from the Talkeetna Arc, AlaskaTomoaki Morishita Abstract
11:15 - 11:30 SMP36-03Variation of magma source in the Oman ophiolite inferred from distribution of magmatic dykes in the mantleMarie Python Abstract
11:30 - 11:45 SMP36-04Mantle source in Oman ophiolite: insight from pyroxenite layers and dykes, and chromitite minipods from the Miskin massifMarie Python Abstract
11:45 - 12:00 SMP36-05Origin of MohoYoshihiko Tamura Abstract
12:00 - 12:15 SMP36-06Petrogenesis of enriched MORB from the Macquarie Ridge ComplexChris Conway Abstract
Presentation No Title Presenter Abstract
Poster Presentation May 21 Core Time
SMP36-P01 Differentiation and generation processes of alkaline basalts from Seifu Seamount in the Japan Sea Katsumi Adachi Abstract
SMP36-P02 The origin of alkali basalts in Nanjing area, eastern China Yuma Hayashi Abstract
SMP36-P03 Generation condition of primary magmas in the Hidaka metamorphic belt constrained by the Nikanbetsu gabbro complex tanoue so Abstract