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| STRUCTURE AND FATE OF SUBDUCTING SLABS
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By
Thorne Lay, University of Santa Cruz, CA
Description
This book is a paperback reprint of Advances in Geophysics, Volume 35 (1994, Academic Press). It provides an overview of the dramatic
progress made in illuminating the properties of deep slabs and the surrounding mantle since the introduction of the plate tectonics model
to the earth sciences more than 25 years ago. The thermal and chemical characteristics of the subducted lithosphere are determined through
thermal and petrological modeling, with seismological observations providing critical constraints on model parameters. Down-wellings
of the oceanic lithosphere play a critical role in plate tectonics by recycling to the mantle material that has risen at mid-ocean ridges
and cooled at the earth's surface. To assist future efforts in developing detailed thermal and petrological models of oceanic lithosphere
down-wellings, this volume includes a comprehensive review of seismological observations and models. A range of seismological procedures
are considered, from travel time constraints on seismic velocity anomalies in the subducting lithospheric slabs, to wave conversions
and reflections off internal and external slab boundaries. An extensive reference list will be useful to earth science researchers and
seismological specialists as a directory to most of the critical literature on slab structure.
Audience
Undergraduates in geophysics, graduate students, and academics involved with seismology, earthquake geology, and tectonics.
Contents
T. Lay, Preface.
Seismological Constraints on the Velocity Structure and Fate of Subducting Lithospheric Slabs: 25 Years
of Progress. Introduction:
Slabs and Mantle Convection. How Seismology Provides Information about Slabs. Earthquakes in Slabs.
General Characterization of Slab and Wedge Structures:
First-Order Slab Anomalies. Guided Waves. Wedge Structure. Thermal
and Mechanical Models.
Travel Time Pattern Constraints on Slab Velocity Structure:
Relative Travel Time Patterns and
Raytracing Analyses. Residual Sphere Modeling.
Tomographical Imaging of Slab Velocity Structure.
Northwest Pacific.
Southwest Pacific. South America, Central America, and the Caribbean. Cascadia, Aleutians, and Alaska. Mediterranean and Hindu Kush.
Slab Boundaries: Converted and Reflected Phases:
Slab Seismicity and Double Benioff Zones. Constraints on Slab Boundaries
and Internal Structure. Seismic Imaging of Phase Boundaries in Slabs.
Focusing, Multipathing, and Diffraction Effects of Slab
Structure:
Short-Period Defocusing and Multipathing Effects. Long-Period Defocusing and Diffraction Effects.
Future
Directions in Slab Imaging. Summary. References. Subject Index.
| Bibliographic details |
Paperback, 185 pages, publication date: DEC-1996
ISBN-13: 978-0-12-439860-3
ISBN-10: 0-12-439860-X
Imprint: ACADEMIC PRESS
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USD 75.95
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Last update: 7 Sep 2009
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