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dc.date.accessioned2018-03-20T08:24:41Z
dc.date.available2018-04-04T22:31:26Z
dc.date.created2017-12-27T15:31:13Z
dc.date.issued2017
dc.identifier.citationGuldstrand, Frank Bo Buster Burchardt, Steffi Hallot, E Galland, Olivier . Dynamics of Surface Deformation Induced by Dikes and Cone Sheets in a Cohesive Coulomb Brittle Crust. Journal of Geophysical Research - Solid Earth. 2017, 122(10), 8511-8524
dc.identifier.urihttp://hdl.handle.net/10852/61171
dc.description.abstractThe analysis of surface deformation associated with intruding magma has become an established method to study subsurface processes and intrusion architecture. Active subsurface magmatism induces deformation that is commonly modeled using static elastic models. To what extent, Coulomb failure of the crust affects surface deformation remains, so far, largely unexplored. In this contribution we present quantitative laboratory results of surface deformation induced by the emplacement of simulated dikes and cone sheets in a cohesive Coulomb material. The analysis of the experimental surface deformation shows that these intrusion types produce distinct and characteristic surface deformation signatures, which reflect the evolution of the intrusion at depth. Generally, dikes show a two‐phase evolution while cone sheets develop gradually. In comparison, cone sheets induce larger uplifted areas and volumes than dikes relative to the depth of the injection source. Dike formation is, in turn, is likely accommodated, to a larger degree than cone sheets, by lateral opening of the host consistent with our current understanding of dike emplacement mechanics. Notably, only surface uplifts develop above the experimental dikes, consistent with a viscous indenter propagation mechanism, that is, a dike pushing ahead. The measured surface deformation patterns associated with dikes starkly contrast with established static, elastic models that predict local subsidence above the tip of a dike. This suggests that Coulomb failure of crustal rocks may considerably affect surface deformation induced by propagating igneous intrusions. This is especially relevant when a relatively high viscosity magma intrudes a weak host, such as unconsolidated sedimentary and volcaniclastic rocks. ©2017. American Geophysical Union. All Rights Reserved.en_US
dc.languageEN
dc.language.isoenen_US
dc.publisherAmerican Geopgysical Union (AGU)
dc.relation.ispartofGuldstrand, Frank (2018) Quantitative Laboratory Modelling of Host Rock Deformation due to the Intrusion of Magma. Doctoral thesis http://hdl.handle.net/10852/65041
dc.relation.urihttp://hdl.handle.net/10852/65041
dc.titleDynamics of Surface Deformation Induced by Dikes and Cone Sheets in a Cohesive Coulomb Brittle Crusten_US
dc.typeJournal articleen_US
dc.creator.authorGuldstrand, Frank Bo Buster
dc.creator.authorBurchardt, Steffi
dc.creator.authorHallot, E
dc.creator.authorGalland, Olivier
cristin.unitcode185,15,22,20
cristin.unitnameGEO Physics of Geological processes
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.cristin1532169
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research - Solid Earth&rft.volume=122&rft.spage=8511&rft.date=2017
dc.identifier.jtitleJournal of Geophysical Research - Solid Earth
dc.identifier.volume122
dc.identifier.issue10
dc.identifier.startpage8511
dc.identifier.endpage8524
dc.identifier.doihttp://dx.doi.org/10.1002/2017JB014346
dc.identifier.urnURN:NBN:no-63808
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.source.issn2169-9313
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/61171/2/Guldstrand_et_al.%252C_Surface_deformation_dynamics%252C_2017.pdf
dc.type.versionPublishedVersion
dc.relation.projectNFR/240467


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