The University of Southampton
University of Southampton Institutional Repository

Fault and magmatic interaction within Iceland's western rift over the last 9kyr

Fault and magmatic interaction within Iceland's western rift over the last 9kyr
Fault and magmatic interaction within Iceland's western rift over the last 9kyr
We present high-resolution 'Chirp' sub-bottom profiler data from Thingvallavatn, a lake in Iceland's western rift zone. These data are combined with stratigraphic constraints from sediment cores to show that movement on normal faults since 9 ka are temporally correlated with magmatic events, indicating that movements were controlled by episodic dyke intrusion. Sediment depo-centres and the focus of subsidence migrated westwards over 3-4 kyr towards the locus of subsequent brittle failure. We interpret this subsidence as related to dyke intrusion a few km along strike, originating from the Hengill volcanic system, which occurred prior to major dyking, faulting and subsidence within the lake at 1.9 ka.
faulting, Iceland, tectonics, volcanic activity
0956-540X
F1-F8
Bull, J.M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Minshull, T.A.
bf413fb5-849e-4389-acd7-0cb0d644e6b8
Mitchell, N.C.
0d8f263f-11a2-49a7-ac49-b65918ad1b23
Thors, K.
9c9f9604-76cc-4cf1-ac78-2c542bf13718
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Best, A.I.
cad03726-10f8-4f90-a3ba-5031665234c9
Bull, J.M.
974037fd-544b-458f-98cc-ce8eca89e3c8
Minshull, T.A.
bf413fb5-849e-4389-acd7-0cb0d644e6b8
Mitchell, N.C.
0d8f263f-11a2-49a7-ac49-b65918ad1b23
Thors, K.
9c9f9604-76cc-4cf1-ac78-2c542bf13718
Dix, J.K.
efbb0b6e-7dfd-47e1-ae96-92412bd45628
Best, A.I.
cad03726-10f8-4f90-a3ba-5031665234c9

Bull, J.M., Minshull, T.A., Mitchell, N.C., Thors, K., Dix, J.K. and Best, A.I. (2003) Fault and magmatic interaction within Iceland's western rift over the last 9kyr. Geophysical Journal International, 154 (1), F1-F8. (doi:10.1046/j.1365-246X.2003.01990.x).

Record type: Article

Abstract

We present high-resolution 'Chirp' sub-bottom profiler data from Thingvallavatn, a lake in Iceland's western rift zone. These data are combined with stratigraphic constraints from sediment cores to show that movement on normal faults since 9 ka are temporally correlated with magmatic events, indicating that movements were controlled by episodic dyke intrusion. Sediment depo-centres and the focus of subsidence migrated westwards over 3-4 kyr towards the locus of subsequent brittle failure. We interpret this subsidence as related to dyke intrusion a few km along strike, originating from the Hengill volcanic system, which occurred prior to major dyking, faulting and subsidence within the lake at 1.9 ka.

Text
submitted.pdf - Author's Original
Download (821kB)

More information

Published date: 2003
Keywords: faulting, Iceland, tectonics, volcanic activity

Identifiers

Local EPrints ID: 2046
URI: http://eprints.soton.ac.uk/id/eprint/2046
ISSN: 0956-540X
PURE UUID: 1bb847e5-24bf-4468-bb04-fc1a2c4b1e30
ORCID for J.M. Bull: ORCID iD orcid.org/0000-0003-3373-5807
ORCID for T.A. Minshull: ORCID iD orcid.org/0000-0002-8202-1379
ORCID for J.K. Dix: ORCID iD orcid.org/0000-0003-2905-5403

Catalogue record

Date deposited: 10 May 2004
Last modified: 16 Mar 2024 03:11

Export record

Altmetrics

Contributors

Author: J.M. Bull ORCID iD
Author: T.A. Minshull ORCID iD
Author: N.C. Mitchell
Author: K. Thors
Author: J.K. Dix ORCID iD
Author: A.I. Best

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.

×