Exp. 350 Izu Bonin Mariana: Reararc

Expedtion info


The rear arc: the missing half of the subduction factory

Proposal #697-Full3 >> go to the full version (PDF)

Scientific Prospectus >> Click HERE

Pre-cruise Training Report >> Click HERE

Expedition Report >>> Click HERE (16 Jun. 2014 uploaded)


30 Mar. to 30 May. 2014

Drilling Vessel

JOIDES Resolution

Ports (start/end)

Keelung (Taiwan) to Yokohama (Japan)

Drilling Sites

Scientific Objectives

Based on IODP Proposal 697-Full3, this expedition aims to understand crustal genesis and mantle evolution of the Izu-Bonin-Mariana (IBM) rear arc system by examining sediments and crust in the Philippine Sea. The primary objective is to obtain a temporal history of across-arc variation in magma composition during five main intervals of arc evolution.

Three main hypotheses will be tested: (1) geochemically asymmetric crust in the rear arch is either a fundamental trait or a secondary trait that develops during backarc spreading; (2) nonsteady state events, such as rifting, play a major role in the evolution of arc crust; and (3) the origin of the Izu rear arc seamount chains is related to mantle convection patterns.

Go to the USIO website


Yoshihiko Tamura (JAMSTEC/IFREE) & Cathy Busby

 Japan-based Scientists applied through J-DESC

Name Affiliation Title Role on board
Yoshihiko Tamura JAMSTEC/IFREE Team Leader Co-chief Scientist
Tomoki Sato JAMSTEC/IFREE Technical support staff Physical Properties Specialist
Takashi Miyazaki JAMSTEC/IFREE Senior Research Scientist Inorganic Geochemist
Jihui Jia Kyoto University Ph.D Student Physical Properties Specialist
Myriam Kars Kochi University Post-doctoral Scientist Paleomagnetist
Alexander Nichols JAMSTEC/IFREE Scientist Core Description-Igneous Rocks/Volcaniclastics

Support information to be on board

If selected to the Science Party of the expedition,various supports will be provided before and after the expedion for many years.

  1. Pre-cruise Training:Training and meeting before the expedition
  2. IODP Expedition:Travel support for the expedition
  3. After Cruise Work: Core analysis during the moratorium
  4. Research funding after the expedition:Research funding after the expedition up to 3 years.


J-DESC Support

Call for application (closed)

Japan-based scientists may apply to J-DESC.


Application deadline


Other important information

Travel support >>Click HERE

Support for shipboard scientists from J-DESC

J-DESC/JAMSTEC supports Japan-based shipboard scientists. Applications are required to be submitted to J-DESC support to get any support. Please contact us to get the information.