Oblique rift opening revealed by reoccurring magma injection in central Iceland

Handle URI:
http://hdl.handle.net/10754/619764
Title:
Oblique rift opening revealed by reoccurring magma injection in central Iceland
Authors:
Ruch, Joel; Wang, Teng ( 0000-0003-3729-0139 ) ; Xu, Wenbin ( 0000-0001-7294-8229 ) ; Hensch, Martin; Jonsson, Sigurjon ( 0000-0001-5378-7079 )
Abstract:
Extension deficit builds up over centuries at divergent plate boundaries and is recurrently removed during rifting events, accompanied by magma intrusions and transient metre-scale deformation. However, information on transient near-field deformation has rarely been captured, hindering progress in understanding rifting mechanisms and evolution. Here we show new evidence of oblique rift opening during a rifting event influenced by pre-existing fractures and two centuries of extension deficit accumulation. This event originated from the Bárðarbunga caldera and led to the largest basaltic eruption in Iceland in >200 years. The results show that the opening was initially accompanied by left-lateral shear that ceased with increasing opening. Our results imply that pre-existing fractures play a key role in controlling oblique rift opening at divergent plate boundaries.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Oblique rift opening revealed by reoccurring magma injection in central Iceland 2016, 7:12352 Nature Communications
Journal:
Nature Communications
Issue Date:
5-Aug-2016
DOI:
10.1038/ncomms12352
Type:
Article
ISSN:
2041-1723
Sponsors:
We thank Sturla Thengilsson, Jon Harrington and Daniele Trippanera for help with fieldwork. We also thank Eleonora Rivalta (GFZ Potsdam) for constructive discussions, Michelle Parks and Freysteinn Sigmundsson (University of Iceland) for the help with accessing the SAR data and Kristín Vogfjörð (Icelandic Meteorological Office) for providing the relocated seismic data from ref. 7. Finally, we thank Cindy Ebinger and two anonymous reviewers for their comments. The COSMO-SkyMed data were provided by the Italian Space Agency (ASI) and the TerraSAR-X data by the German Space Agency (DLR) through the Icelandic Volcanoes Supersite project supported by the Committee on Earth Observing Satellites (CEOS). The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://www.nature.com/doifinder/10.1038/ncomms12352
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Full metadata record

DC FieldValue Language
dc.contributor.authorRuch, Joelen
dc.contributor.authorWang, Tengen
dc.contributor.authorXu, Wenbinen
dc.contributor.authorHensch, Martinen
dc.contributor.authorJonsson, Sigurjonen
dc.date.accessioned2016-09-04T07:31:16Z-
dc.date.available2016-09-04T07:31:16Z-
dc.date.issued2016-08-05-
dc.identifier.citationOblique rift opening revealed by reoccurring magma injection in central Iceland 2016, 7:12352 Nature Communicationsen
dc.identifier.issn2041-1723-
dc.identifier.doi10.1038/ncomms12352-
dc.identifier.urihttp://hdl.handle.net/10754/619764-
dc.description.abstractExtension deficit builds up over centuries at divergent plate boundaries and is recurrently removed during rifting events, accompanied by magma intrusions and transient metre-scale deformation. However, information on transient near-field deformation has rarely been captured, hindering progress in understanding rifting mechanisms and evolution. Here we show new evidence of oblique rift opening during a rifting event influenced by pre-existing fractures and two centuries of extension deficit accumulation. This event originated from the Bárðarbunga caldera and led to the largest basaltic eruption in Iceland in >200 years. The results show that the opening was initially accompanied by left-lateral shear that ceased with increasing opening. Our results imply that pre-existing fractures play a key role in controlling oblique rift opening at divergent plate boundaries.en
dc.description.sponsorshipWe thank Sturla Thengilsson, Jon Harrington and Daniele Trippanera for help with fieldwork. We also thank Eleonora Rivalta (GFZ Potsdam) for constructive discussions, Michelle Parks and Freysteinn Sigmundsson (University of Iceland) for the help with accessing the SAR data and Kristín Vogfjörð (Icelandic Meteorological Office) for providing the relocated seismic data from ref. 7. Finally, we thank Cindy Ebinger and two anonymous reviewers for their comments. The COSMO-SkyMed data were provided by the Italian Space Agency (ASI) and the TerraSAR-X data by the German Space Agency (DLR) through the Icelandic Volcanoes Supersite project supported by the Committee on Earth Observing Satellites (CEOS). The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).en
dc.language.isoenen
dc.relation.urlhttp://www.nature.com/doifinder/10.1038/ncomms12352en
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en
dc.titleOblique rift opening revealed by reoccurring magma injection in central Icelanden
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalNature Communicationsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionHuffington Department of Earth Sciences, Southern Methodist University, PO Box 750395, Dallas, Texas 75275-0395, USAen
dc.contributor.institutionDepartment of Land Surveying and Geo-informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kongen
dc.contributor.institutionIcelandic Meteorological Office, IS-150 Reykjavik, Icelanden
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorRuch, Joelen
kaust.authorWang, Tengen
kaust.authorXu, Wenbinen
kaust.authorJonsson, Sigurjonen
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