Fault and magmatic interaction within Iceland's western rift over the last 9kyr
Bull, J.M.; Minshull, T.A.; Mitchell, N.C.; Thors, K.; Dix, J.K.; Best, A.I. ORCID: https://orcid.org/0000-0001-9558-4261. 2003 Fault and magmatic interaction within Iceland's western rift over the last 9kyr. Geophysical Journal International, 154 (1). F1-F8. 10.1046/j.1365-246X.2003.01990.x
Before downloading, please read NORA policies.Preview |
PDF
submitted.pdf Download (821kB) | Preview |
Abstract/Summary
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.
Item Type: | Publication - Article |
---|---|
Digital Object Identifier (DOI): | 10.1046/j.1365-246X.2003.01990.x |
ISSN: | 0956-540X |
Additional Keywords: | faulting, Iceland, tectonics, volcanic activity |
Date made live: | 10 May 2004 +0 (UTC) |
URI: | https://nora.nerc.ac.uk/id/eprint/102046 |
Actions (login required)
View Item |
Document Downloads
Downloads for past 30 days
Downloads per month over past year