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Waveform inversion of the S reflector west of Spain: fine structure of a detachment fault.

Leythaeuser, T., Reston, T.J. and Minshull, T.A. (2005) Waveform inversion of the S reflector west of Spain: fine structure of a detachment fault. Geophysical Research Letters, 32, (22), L22304. (doi:10.1029/2005GL024026).

Record type: Article

Abstract

The S reflection west of Iberia has been interpreted as a low-angle detachment fault separating crustal fault blocks from partially serpentinized mantle. We apply full waveform inversion to investigate the fine structure of S. Our results confirm that S is largely a step increase in velocity (and density), probably from crustal rocks to partially serpentinized mantle peridotites. A ~50 m thick low velocity zone above S might represent a main fault zone of highly serpentinized peridotites or hydrofractured and altered crustal rocks above the main fault zone. Both interpretations imply focused fluid flow along S, raising the possibility that low-angle movement along S was aided by the development of local, transient high fluid pressures.

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Published date: 2005
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 24157
URI: http://eprints.soton.ac.uk/id/eprint/24157
ISSN: 0094-8276
PURE UUID: ba5e028c-0a9b-42db-9bb6-e2de3f935419
ORCID for T.A. Minshull: ORCID iD orcid.org/0000-0002-8202-1379

Catalogue record

Date deposited: 23 Mar 2006
Last modified: 17 Jul 2017 16:14

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Contributors

Author: T. Leythaeuser
Author: T.J. Reston
Author: T.A. Minshull ORCID iD

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