JpGU-AGU Joint Meeting 2017

Session information

[EE] Oral

S (Solid Earth Sciences) » S-CG Complex & General

[S-CG63] [EE] Crust-Mantle Connections / Hard-Rock Drilling

Wed. May 24, 2017 10:45 AM - 12:15 PM 104 (International Conference Hall 1F)

convener:Yoshihiko Tamura(R & D Center for Ocean Drilling Science, Japan Agency for Maine-Earth Science and Technology), Katsuyoshi Michibayashi(Institute of Geosciences, Shizuoka University), Eiichi TAKAZAWA(Department of Geology, Faculty of Science, Niigata University), Katy Jane Chamberlain(Japan Agency for Marine-Earth Science and Technology), Tomoaki Morishita(School of Natural System, Colleage of Science and Technology, Kanazawa University), Henry JB Dick(Woods Hole Oceanographic Institution), Mark K Reagan(University of Iowa), Susanne M Straub(Lamont Doherty Earth Observatory of Columbia University), Chairperson:Yoshihiko Tamura(R & D Center for Ocean Drilling Science, Japan Agency for Maine-Earth Science and Technology), Chairperson:Katsuyoshi Michibayashi(Institute of Geosciences, Shizuoka University)

A number of IODP expeditions have focused on hard-rock drilling over the last decade including Expedition 352 in 2014, which drilled the volcanic sequence associated with subduction initiation in the Bonin fore-arc, and Expedition 360, which drilled the lithosphere associated with ultraslow-spreading at the Southwest Indian Ridge in 2016. In this session, we review the current status of our understanding for oceanic lithosphere and island arc formation or anything important beyond and discuss significant issue to be answered by up-coming/future hard-rock drilling. Preliminary results from the recent Expeditions are also welcome. The session also seeks to explore the crust-mantle connections among ophiolites, at divergent and convergent plate boundaries and ocean island settings. Crustal thickness and composition are correlated on ocean islands where the spatial variability in erupted magma compositions is reflected in the composition of the crust. To what extend to crustal composition reflect those of the primary melts? 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 invites contributions from interdisciplinary field ranging from geophysics, geochemistry, petrology, engineering and biology working on hard-rock cores/samples from the expeditions or any other research vessels as well as on-land geology such as ophiolites.

11:15 AM - 11:30 AM

*Morihisa Hamada1, Hikaru Iwamori1, Philipp A. Brandl2, He Li3, Ivan P. Savov4 (1.Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Science and Technology, 2.GEOMAR Helmholtz Centre for Ocean Research Kiel, 3.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 4.The University of Leeds)

11:30 AM - 11:45 AM

*Yoshihiko Tamura1, Julie Christin Schindlbeck2, Martin Jutzeler3, Alexander Nichols4, Susan DeBari5, Graham D. M. Andrews6, James Gill7, Cathy Busby8, Peter Blum9, Yukari Kido10 (1.ODS, JAMSTEC, 2.GEOMAR Helmholtz Centre for Ocean Research, 3.School of Physical Sciences and Centre of Excellence in Ore Deposits (CODES), University of Tasmania, 4.Department of Geological Sciences, University of Canterbury, 5.Department of Geology, Western Washington University, 6.Department of Geology & Geography, West Virginia University, 7.University of California, Santa Cruz, 8.University of California, Davis, 9.IODP, Texas A & M University, 10.CDEX, JAMSTEC)



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