1. Welcome: Izu-Bonin-Mariana MARGINS-IFREE Workshop
Geoff Abers, Boston University
Chair, MARGINS Steering Committee
November 14, 2007
MARGINS Mission:
to understand the complex interplay of processes that govern the evolution of continental margins

2. The NSF MARGINS Concept
Broad focus: evolution of continental margins
Four interdisciplinary Initiatives from community workshops: Science Plans
All “cross the shoreline”
Active processes
Focus Sites concentrate resources
The Machinery:
Independent NSF Panel funds all science proposals: reviewed, competitive
Steering Committee (MSC) represents Community
Logistics and coordination: MARGINS Office
MSC members: Gill, Holbrook, Ryan, … (ex: Many); MO: Cary

3. Initiatives SubFac: The Subduction Factory
SEIZE: Seismogenic Zone Experiment
S2S: Sediment Source to Sink
RCL: Rupturing Continental Lithosphere
SEIZE
RCL
SubFac
SubFac,
SEIZE
S2S
Focus Sites

4. The Subduction Factory
What is mass balance of chemical species and material across the subduction factory?
How do forcing functions regulate production of magma and fluid from the subduction factory?
How does the volatile cycle impact chemical, physical & biological processes from trench to deep mantle?
SubFac
Izu-Bonin-Mariana
The cycling of material, fluids, and energy from trench to arc and deep earth; growth of continents
prelim: Active-source CAM, vs. Takahashi *** Need
Ellen Kate; Pozgay + Abt
Spinelli T-mod, vs. Kneller
Kelley H2O vs locn; ???
CHK FROM CA MTG Kelley, Carr
Central America
Allied: Cascadia, Aleutians
Major workshops: 1998, 2000
Seven Site and Topical workshops
4 Monographs or Special Issues

5. Program Status First initiatives started in 1999 2000-2007:
A 10-year plan :
82 projects, 110 PI’s
$5 - 6 M/yr
Positive 2004 program review
Need integration & synthesis activities
Major Goal : Lay groundwork for 2009 Review
Decadal Program

6. IBM 2000-2007: 17 funded projects, 29 awards
4 geophysics
3 marine geology
10 geochemistry/petrology
Related MARGINS Efforts
10 experimental, lab, modeling
7 relevant workshops ( )
Anatahan rapid response
+ This Meeting Highlights:
IFREE collaborations

7. Special activities at this Workshop
Databases & the Global Data Network
Education: Undergraduate teaching modules

8. 2009 Decadal Review MARGINS has a 10-year Science Plan
Required: Review
demonstrate success: something big
foster synthesis
Optional: Build a successor program
what questions drive future research?
what transformative science could be done?

9. How you can help guide the future … Friday Breakouts: frame opportunities Saturday morning discussion: Questions
Discussion Outline
See Handout! (MARGINS Steering Committee)
Read, think, write down thoughts
send to conveners, or bring Saturday
non-MARGINS perspective is valuable
See Handout