Skip to Main Content
Book Chapter

Subducting slab structure below the eastern Sunda arc inferred from non-linear seismic tomographic imaging

By
S. Widiyantoro
S. Widiyantoro
1
Faculty of Mining and Petroleum Engineering, Bandung Institute of Technology, Jl. Ganesha 10, Bandung 40132, Indonesia
Search for other works by this author on:
J. D. Pesicek
J. D. Pesicek
2
Department of Geoscience, University of Wisconsin-Madison, 1215 W Dayton St., Madison WI 53706, USA
Search for other works by this author on:
C. H. Thurber
C. H. Thurber
2
Department of Geoscience, University of Wisconsin-Madison, 1215 W Dayton St., Madison WI 53706, USA
Search for other works by this author on:
Published:
January 01, 2011

Abstract

Detailed P-wave speed velocity structure beneath the Sunda arc has been successfully imaged by applying a non-linear approach to seismic tomography. Nearly one million compressional phases from events within the Indonesian region have been used. These include the surface-reflected depth phases pP and pwP in order to improve the sampling of the upper-mantle structure, particularly below the back-arc regions. We have combined a high-resolution regional inversion with a low-resolution global inversion to minimize the mapping of distant aspherical mantle structure into the study region. In this paper, we focus our discussion on the upper mantle structure beneath the eastern part of the Sunda arc. The tomographic images confirm previous observations of a hole in the subducted slab in the upper mantle beneath eastern Java. The images also suggest that a tear in the slab exists below the easternmost part of the Sunda arc, where the down-going slab is deflected in the mantle transition zone. In good agreement with previous studies, the properties of the deflected slab show a strong bulk-sound signature.

You do not currently have access to this article.

Figures & Tables

Contents

Geological Society Special Publications

The SE Asian Gateway: History and Tectonics of the Australia-Asia Collision

R. Hall
R. Hall
Royal Holloway University of London, UK
Search for other works by this author on:
M. A. Cottam
M. A. Cottam
Royal Holloway University of London, UK
Search for other works by this author on:
M. E. J. Wilson
M. E. J. Wilson
Curtin University, Australia
Search for other works by this author on:
Geological Society of London
ISBN electronic:
9781862396036
Publication date:
January 01, 2011

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal