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Inside the Subduction Factory


Series: Geophysical Monograph Series Volume: 138

By: John H Eiler (Editor)

324 pages, colour illustrations

American Geophysical Union

Hardback | Aug 2003 | #232494 | ISBN: 0875909973
Availability: Usually dispatched within 5 days Details
NHBS Price: £52.95 $65/€59 approx

About this book

Subduction zones helped nucleate and grow the continents, they fertilize and lubricate the earth's interior, they are the site of most subaerial volcanism and many major earthquakes, and they yield a large fraction of the earth's precious metals. They are obvious targets for study – almost anything you learn is likely to impact important problems – yet arriving at a general understanding is notoriously difficult: Each subduction zone is distinct, differing in some important aspect from other subduction zones; fundamental aspects of their mechanics and igneous processes differ from those in other, relatively well-understood parts of the earth; and there are few direct samples of some of their most important metamorphic and metasomatic processes. As a result, even first-order features of subduction zones have generated conflict and apparent paradox. A central question about convergent margins, for instance – how vigorous magmatism can occur where plates sink and the mantle cools – has a host of mutually inconsistent answers: Early suggestions that magmatism resulted from melting subducted crust have been emphatically disproved and recently just as emphatically revived; the idea that melting is fluxed by fluid released from subducted crust is widely held but cannot explain the temperatures and volatile contents of many arc magmas; generations of kinematic and dynamic models have told us the mantle sinks at convergent margins, yet strong evidence suggests that melting there is often driven by upwelling. In contrast, our understanding ofwhy volcanoes appear at ocean ridges and "hotspots" – although still presenting their own chestnuts – are fundamentally solved problems.


Preface vii

Introduction: Inside the Subduction Factory
      John M. Eiler 1

Section I: The Subducted Slab
Thermal Structure and Metamorphic Evolution of Subducting Slabs
      Simon M. Peacock 7
Tracers of the Slab
      Tim Elliott 23
Basic Principles of Electromagnetic and Seismological Investigation of Shallow Subduction Zone Structure
      George Helffrich 47

Section II: The Mantle Wedge
Seismological Constraints on Structure and Flow Patterns Within the Mantle Wedge
      Douglas A. Wiens and Gideon P. Smith 59
Rheology of the Upper Mantle and the Mantle Wedge: A View From the Experimentalists
      Greg Hirth and David Kohlstedf 83
Experimental Constraints on Melt Generation in the Mantle Wedge
      Glen A. Gaetani and Timothy L Grove 107
Mapping Water Content in Upper Mantle
      Shun-ichiro Karato 135

Section III: Focus Regions
Volcanism and Geochemistry in Central America: Progress and Problems
      M. J. Carr, M. D. Feigenson, L C. Patino, and J. A. Walker 153
An Overview of the Izu-Bonin-Mariana Subduction Factory
      Robert J. Stern, Matthew J. Fouch, and Simon L Klemperer 175
Along-strike Variation in Lavas of the Aleutian Island Arc: Genesis of High Mg# Andesite and Implications for Continental Crust
      Peter B. Kelemen, Gene M. Yogodzinski, and David W. Scholl 223

Section IV: Synthesis
Some Constraints on Arc Magma Genesis
      Yoshiyuki Tatsumi 277
Thermal Structure due to Solid-State Flow in the Mantle Wedge Beneath Arcs
      Peter B. Kelemen, Jennifer L. Rilling, E. M. Parmentier, Luc Mehl, and Bradley R. Hacker 293

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