Waveform inversion of the S reflector west of Spain: fine structure of a detachment fault.
Waveform inversion of the S reflector west of Spain: fine structure of a detachment fault.
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.
L22304
Leythaeuser, T.
f66b970f-6087-4f07-bf05-27c3782bb0b5
Reston, T.J.
0ba75307-667f-4f0e-b4fd-42f80a34b4f7
Minshull, T.A.
bf413fb5-849e-4389-acd7-0cb0d644e6b8
2005
Leythaeuser, T.
f66b970f-6087-4f07-bf05-27c3782bb0b5
Reston, T.J.
0ba75307-667f-4f0e-b4fd-42f80a34b4f7
Minshull, T.A.
bf413fb5-849e-4389-acd7-0cb0d644e6b8
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), .
(doi:10.1029/2005GL024026).
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.
Text
leythaeuser_et_al_2005.pdf
- Version of Record
More information
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
Catalogue record
Date deposited: 23 Mar 2006
Last modified: 16 Mar 2024 03:11
Export record
Altmetrics
Contributors
Author:
T. Leythaeuser
Author:
T.J. Reston
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
