Workshop Report

General Informations

~genesis of continental crust in volcanic arcs~
Workshop in Hawaii
17-21 September, 2012
Waikoloa Beach Marriott Resort & Spa, Kona, Hawaii, USA

Scientific Objectives

This workshop aims to gather a wide range of geophysicists, geologists, geochemists and petrologists who are interested in the nature of arc crust and how it is modified in collision zones and preserved in continental crust. Our goal is to discuss the merits, methods and implications of "ULTRA-DEEP DRILLING INTO ARC CRUST", and the best place for such drilling.

D/V Chikyu has the ability to drill into the middle crust of intra-oceanic arcs where juvenile continental crust exists but has never been directly sampled. Our prime objectives are to explore the realm of the unknown and further elucidate the genesis of continental crust.

"ULTRA-DEEP DRILLING INTO ARC CRUST" is the best way to sample unprocessed juvenile continental-type crust, to observe these active processes that produce the nuclei of new continental crust, and to examine the nature of juvenile continental crust as first generated at intra-oceanic arcs.

IODP Proposal download

General Outlines

Attendees are limited to 60 and are selected by Steering Committee in July.

Food and lodging during the workshop will be provided at no cost to attendees but there may be a charge for the field trip. Attendees are responsible for their own travel expenses. Some travel funds may be provided to attendees but this depends on pending applications. Attendees will notified as soon as possible.

Meeting is supported by Grant-in-Aid for Creative Scientific Research (19GS0211), JAMSTEC, NSF and GeoPrisms.


  • Shuichi Kodaira (JAMSTEC)
  • James B. Gill (UCSC)
  • Susan M. DeBari (Western Washington University)
  • Yoshihiko Tamura (JAMSTEC)

Steering Committee

  • Yoshiyuki Tatsumi (JAMSTEC)
  • Katherine A. Kelley (University of Rhode Island)
  • Robert J. Stern (University of Texas at Dallas)
  • Mark K. Reagan (University of Iowa)
  • Julian A. Pearce (Cardiff University)
  • Richard Arculus (Australian National University)
  • Osamu Ishizuka (JAMSTEC)
  • Susanne Straub (LDEO, Columbia University)
  • Rosemary Hickey-Vargas (Florida International University)
  • Jocelyn McPhie (University of Tasmania)
  • Yildrim Dilek (Miami University)
  • Cathy Busby (UCSB)
  • Makoto Arima (Yokohama National University)
  • Michael Gurnis (Caltech)

List of Participants

Family Name First Name Organization E-mail Address
Alvarez Roman National University of Mexico (UNAM) rab[at]
Aoike Kan CDEX, JAMSTEC bluepond[at]
Arima Makoto Yokohama National University arima[at]
Bergantz George University of Washington bergantz[at]
Bohrson Wendy Central Washington University bohrson[at]
Brown Michael University of Maryland mbrown[at]
Busby Cathy University of California, Santa Barbara cathy[at]
Calvert Andrew Simon Fraser University acalvert[at]
Castillo Paterno Scripps Institution of Oceanography pcastillo[at]
Coleman Drew S.  University of North Carolina dcoleman[at]
De Paoli Matthew ETH Zurich matthew.depaoli[at]
DeBari Susan Western Washington University debari[at]
Dilek Yildirim Miami University dileky[at]
Draut Amy E. U.S. Geological Survey adraut[at]
Garcia Michael SOEST, University of Hawaii mogarcia[at]
Gazel Esteban Virginai Tech egazel[at]
Gill James University of California, Santa Cruz gillord[at]
Glazner Allen F. University of North Carolina afg[at]
Hickey-Vargas Rosemary Florida International University hickey[at]
Ishizuka Osamu GSJ/AIST and IFREE, JAMSTEC o-ishizuka[at]
Jicha Brian University of Wisconsin-Madison bjicha[at]
John Barbara University of Wyoming bjohn[at]
Johnson Emily R University of Oregon erj[at]
Jutzeler Martin University of Otago jutzeler[at]
Kent Adam Oregon State University adam.kent[at]
Kimura Jun-Ichi IFREE, JAMSTEC jkimura[at]
Kinvig Helen UCSB h.kinvig[at]
Kodaira Shuichi IFREE, JAMSTEC kodaira[at]
Loocke Matthew University of Houston mloocke[at]
Martinez Fernando SOEST, University of Hawaii fernando[at]
McPhie Jocelyn CODES and School of Earth Sciences j.mcphie[at]
Melekhova Elena University of Bristol lena.melekhova[at]
Muir Duncan University of Bristol duncan.muir[at]
Muller Paul University of Florida pamueller[at]
Nedorub Olga University of South Carolina onedorub[at]
Nichols Alex IFREE, JAMSTEC nichols[at]
Nishizawa Azusa Japan Coast Guard azusa[at]
Obana Koichiro IFREE, JAMSTEC obanak[at]
Pearce Julian Cardiff University PearceJA[at]
Plank Terry LDEO, Columbia University tplank[at]
Reagan Mark University of Iowa mark-reagan[at]
Ruprecht Philipp LDEO, Columbia University ruprecht[at]
Ryan Jeffrey University of South Florida ryan[at]
Saito Saneatsu IFREE, JAMSTEC saito[at]
Sato Takeshi IFREE, JAMSTEC tsato[at]
Shillington Donna LDEO, Columbia University djs[at]
Stern Robert J University of Texas at Dallas rjstern[at]
Straub Susanne LDEO, Columbia University smstraub[at]
Tamura Yoshihiko IFREE, JAMSTEC tamuray[at]
Tani Kenichiro IFREE, JAMSTEC kentani[at]
Taylor Brian SOEST, University of Hawaii taylorb[at]
Todd Erin U.S. Geological Survey todd.erin[at]
VanTongeren Jill Yale University jill.vantongeren[at]
Vogt Katharina ETH Zurich katharina.vogt[at]
Wiens Douglas Washington University in Saint Louis doug[at]
Yamashita Mikiya IFREE, JAMSTEC mikiya[at]
Yogodzinski Gene University of South Carolina gyogodzin[at]
Zellmer Georg F. Institute of Earth Sciences, Academia Sinica gzellmer[at]


Preliminary Schedule

Day 1: Sep 18 (Tue). Background information for all IBM drilling
20 minutes talk and 10 minutes discussion. Invite participants to share 2-3 slides of relevant work.
08:00 Welcome and introduction to meeting (outcomes, format) (Tamura/Gill)
08:30 Evolution of IBM and Its Felsic Rocks (Stern)
09:00 Geophysical overview of IBM arc (Calvert/Kodaira)
09:30 KPR (Kyushu-Palau Ridge) Geophysics (Nishizawa)
10:00-10:30 Coffee
10:30 Aleutian Geophysics (Shillington)
11:00 IBM Forearc Geophysics (Kodaira)
11:30 IODP proposal 696 Forearc drilling: Subduction initiation (Pearce)
12:00 IODP proposal 695 Amami drilling: Arc Foundations (Ishizuka)
12:30-14:00 Lunch
14:00 IODP proposal 697 Reararc: the missing half of IBM (Gill/Tamura)
14:30 IBM geochemical evolution (Straub)
15:00 Arc uppermost mantle: geophysical observations and processes (Wiens)
15:30 Chikyu drilling (Aoike)
16:00 Combining drill cores with in-situ geophysical measurements – reference model for other arcs (Saito)
16:30-17:30 Discussion with coffee (Moderator, Plank) – invitation to share 1-2 visuals and 3-4 minutes of microphone time from workshop participant
17:30-19:00 Posters (100 cm (width) * 120 cm (hight))
19:00-21:00 Ice Breaker/Dinner
Day 2: Sep 19 (Wed). What to expect in 698?
20 minutes talk and 10 minutes discussion. Invite participants to share 2-3 slides of relevant work.
08:00 IODP Proposal 698:  Deep drilling to mid crust (Tamura)
08:30 698 Background; Review of Site 792 (Gill)
09:00-09:30 Discussion (moderator, Gill)
09:30 Field exposures of arc mid crust 1 (Baja: Busby)
10:00-10:30 Coffee
10:30 Field exposures of arc mid crust 2 (Kohistan: Jagoutz)
11:00 Field exposures of arc mid crust 3 (Talkeetna: DeBari)
11:30 Field exposures of arc mid crust 4 (Sierra Nevada: Coleman)
12:00 Tonalite in western Pacific arcs (Tani)
12:30-14:00 Lunch
14:00 Thermal modeling of lower crust melt generation (Bergantz)
14:30 How juvenile arc crust adds to continental growth (Kemp)
15:00 Role of oceanic arcs and arc-related collisions in the evolution of continental crust (Draut)
15:30 Oceanic middle and lower crust (John)
16:00-16:30 Coffee
16:30 Tatsumi model (Kimura)
17:00-18:00 Discussion – invitation to share 1-2 visuals and 3-4 minutes of microphone time from workshop participants
18:00-19:00 Posters
19:00 Dinner
Day 3: Sep 20 (Thu). Field excursion to Kilauea lead by Don Swanson and informal discussions
<Clothing> Don advises wearing long pants and a warm jacket. An umbrella or raincoat might be useful. The areas that we will be visiting receive 300-400 cm of rain annually, and we will be at elevations of 1000-1200 meters. That means the weather can be both wet and cool!
08:00 Taking the chartered bus/mini bus heading to Hawaii Volcano Observatory (
10:00 Summit area of Kilauea Volcano, its caldera, and the ongoing eruption below us
11:15 Thurston Lava Tube
12:00 Lunch at Pu`u Pua`i on the edge of Kilauea Iki Crater
13:00 Drive to Mauna Ulu and walk to see lava trees, the eruptive fissure for the 1969-74 eruption that created Mauna Ulu, and Mauna Ulu itself
14:30 Kilauea Visitor Center
15:30 Leave Kilauea Visitor Center
17:00 Arriving at the hotel
Day 4: Sep 21 (Fri). Produce science planning document outlines; refine Proposal 698 scientific objectives and rationale; develop strategies for shipboard and land-based studies.
08:00 Two parallel breakout groups, each with half the participants:
Topic: What should be the scientific objectives for deep ocean drilling in light of what we’ve learned in Days 1+2? (698, including upper as well as middle crustal objectives) Moderator; Stern, DeBari. Note-taker; McPhie, Hickey-Vargas. Reporter; Reagan, Busby.
10:00-10:30 Coffee
10:30 Plenary: Reports from the two breakout groups and discussion of how to improve, merge, and prioritize them
12:30-14:00 Lunch
14:00 Two parallel breakout groups, each with half the participants (but different combinations of people than in the morning)
Topic: What at-sea drilling strategies and what shore-based studies are needed to achieve the scientific objectives? What expertise needs to be on the ship and to study the drill core afterward? How should drilling be staged over multiple legs? Moderator; Stern, Gill. Note-taker; Nichols, Todd. Reporter; Pearce, Straub.
16:00-16:30 Coffee
16:30 Plenary: Reports from the two breakout groups and discussion of how to improve, merge, and prioritize them
19:00 Dinner

Application for Attendees

Applications are invited from scientists at all career levels who are interested in any aspect of deep drilling in oceanic arcs. No prior drilling experience is required. Attendees will be selected by the Steering Committee to obtain a balance of scientific expertise. Applicants will be notified by July 30, 2012.

  • Deadline : July 22, 2012 (JST)

The Primary Contact Person

Yoshihiko Tamura
TL of Crust Evolution & Project IBM Research Teams
Yokosuka 237-0061, Japan
Tel: +81-46-867-9761
Fax: +81-46-867-9625