Skip to Main Content
Book Chapter

Structural and stratigraphic evolution of the Savu Basin, Indonesia

By
James W. D. Rigg
James W. D. Rigg
Search for other works by this author on:
Robert Hall
Robert Hall
SE Asia Research Group, Department of Earth Sciences, Royal Holloway University of London, Egham, Surrey TW20 0EX, UK
Search for other works by this author on:
Published:
January 01, 2011

Abstract

The Savu Basin is located in the Sunda–Banda fore-arc at the position of change from oceanic subduction to continent–arc collision. It narrows eastward and is bounded to the west by the island of Sumba that obliquely crosses the fore-arc. New seismic data and published geological observations are used to interpret Australia–Sundaland convergence history. We suggest the basin is underlain by continental crust and was close to sea level in the Early Miocene. Normal faulting in the Middle Miocene and rapid subsidence to several kilometres was driven by subduction rollback. Arc-derived volcaniclastic turbidites were transported ESE, parallel to the Sumba Ridge, and then NE. The ridge was elevated as the Australian continental margin arrived at the Banda Trench, causing debris flows and turbidites to flow northwards into the basin which is little deformed except for tilting and slumping. South of the ridge fore-arc sediments and Australian sedimentary cover were incorporated in a large accretionary complex formed as continental crust was thrust beneath the fore-arc. This is bounded to the north by the Savu and Roti Thrusts and to the south by a trough connecting the Java Trench and Timor Trough which formed by south-directed thrusting and loading.

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