The University of Southampton
University of Southampton Institutional Repository

Localized rifting at Chagos Bank in the India-Capricorn plate boundary zone

Record type: Article

Chagos Bank is a region of thick crust in the central Indian Ocean where a concentration of seismicity indicates that extension is ongoing. We have modeled bathymetry and gravity data to show that the crust-mantle boundary shallows near a seabed trough, consistent with a total extension of ~15 km over a zone ;50 km broad. This estimate is consistent with 5–10 m.y. of deformation at the present rate of relative India-Capricorn motion; the ~15 km of extension is toward the lower limit of the total extension expected from magnetic anomaly reconstructions, but would be accumulated in 1–3 m.y. in a regime having the present-day seismicity. We attribute the localization of seismicity beneath Chagos Bank to a weak rheology caused by its thick crust.

Full text not available from this repository.

Citation

Henstock, Timothy J. and Minshull, Timothy A. (2004) Localized rifting at Chagos Bank in the India-Capricorn plate boundary zone Geology, 32, (3), pp. 237-240. (doi:10.1130/G19850.1).

More information

Published date: 2004
Keywords: extensional tectonics, indian ocean, plate boundaries, intraplate tectonics, seismicity

Identifiers

Local EPrints ID: 9818
URI: http://eprints.soton.ac.uk/id/eprint/9818
ISSN: 0091-7613
PURE UUID: f558120e-7c74-4e07-ad9e-56b6cce8ce33
ORCID for Timothy J. Henstock: ORCID iD orcid.org/0000-0002-2132-2514
ORCID for Timothy A. Minshull: ORCID iD orcid.org/0000-0002-8202-1379

Catalogue record

Date deposited: 13 Oct 2004
Last modified: 17 Jul 2017 17:08

Export record

Altmetrics


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×