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Title: Oblique rift opening revealed by reoccurring magma injection in Central Iceland
Authors: Ruch, J
Wang, T
Xu, W 
Hensch, M
Jónsson, S
Issue Date: 5-Aug-2016
Source: Nature communications, 5 Aug 2016, v. 7, 12352, p. 1-7
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 Bárarbunga 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.
Publisher: Nature Publishing Group
Journal: Nature communications 
EISSN: 2041-1723
DOI: 10.1038/ncomms12352
Rights: This work is licensed under a Creative Commons Attribution 4.0International License. The images or other third party material in thisarticle are included in the article’s Creative Commons license, unless indicated otherwisein 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/
© The Author(s) 2016
The following publication Ruch, J.et al.Oblique rift opening revealed by reoccurringmagma injection in central Iceland.Nat. Commun.7:12352, 1-7 (2016) is available at https://dx.doi.org/10.1038/ncomms12352
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