The tectonic significance of dikes of irregular fold-like shape
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Research Article| July 01, 2012 The tectonic significance of dikes of irregular fold-like shape Elena Druguet; Elena Druguet * 1Departament de Geologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain *E-mails: elena.druguet@uab.cat; linamarcela.castano@uab.cat; dyanna@uwm.edu; hudle001@umn.edu; jordi.carreras@uab.cat. Search for other works by this author on: GSW Google Scholar Lina M. Castaño; Lina M. Castaño * 1Departament de Geologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain *E-mails: elena.druguet@uab.cat; linamarcela.castano@uab.cat; dyanna@uwm.edu; hudle001@umn.edu; jordi.carreras@uab.cat. Search for other works by this author on: GSW Google Scholar Dyanna M. Czeck; Dyanna M. Czeck * 2Department of Geosciences, University of Wisconsin, P.O. Box 413, Milwaukee, Wisconsin 53201, USA *E-mails: elena.druguet@uab.cat; linamarcela.castano@uab.cat; dyanna@uwm.edu; hudle001@umn.edu; jordi.carreras@uab.cat. Search for other works by this author on: GSW Google Scholar Peter J. Hudleston; Peter J. Hudleston * 3Department of Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA *E-mails: elena.druguet@uab.cat; linamarcela.castano@uab.cat; dyanna@uwm.edu; hudle001@umn.edu; jordi.carreras@uab.cat. Search for other works by this author on: GSW Google Scholar Jordi Carreras Jordi Carreras * 1Departament de Geologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain *E-mails: elena.druguet@uab.cat; linamarcela.castano@uab.cat; dyanna@uwm.edu; hudle001@umn.edu; jordi.carreras@uab.cat. Search for other works by this author on: GSW Google Scholar Author and Article Information Elena Druguet * 1Departament de Geologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain Lina M. Castaño * 1Departament de Geologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain Dyanna M. Czeck * 2Department of Geosciences, University of Wisconsin, P.O. Box 413, Milwaukee, Wisconsin 53201, USA Peter J. Hudleston * 3Department of Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA Jordi Carreras * 1Departament de Geologia, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain *E-mails: elena.druguet@uab.cat; linamarcela.castano@uab.cat; dyanna@uwm.edu; hudle001@umn.edu; jordi.carreras@uab.cat. Publisher: Geological Society of America Received: 25 Oct 2011 Revision Received: 20 Jan 2012 Accepted: 26 Jan 2012 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2012 Geological Society of America Geology (2012) 40 (7): 579–582. https://doi.org/10.1130/G32960.1 Article history Received: 25 Oct 2011 Revision Received: 20 Jan 2012 Accepted: 26 Jan 2012 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Elena Druguet, Lina M. Castaño, Dyanna M. Czeck, Peter J. Hudleston, Jordi Carreras; The tectonic significance of dikes of irregular fold-like shape. Geology 2012;; 40 (7): 579–582. doi: https://doi.org/10.1130/G32960.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The effects of postemplacement deformation on originally nonplanar dikes were tested experimentally and compared to field data from the Rainy Lake zone (Ontario, Canada) where irregular fold-like structures are observed. The analyses reveal that two processes are responsible for the irregular dike geometries. First, dikes intrude with varying orientations as they propagate across layers with rheology contrasts, thus developing nonplanar profiles. Second, with postemplacement ductile deformation, dikes that are more competent than the host rocks are folded and refracted in variable amounts, with the amount depending on the initial dike geometry, the heterogeneities in the host, and the regional strain. Deformed dikes and veins are often used as kinematic markers to evaluate regional tectonics, using methods that generally assume that veins had planar walls prior to deformation. The experimental results indicate that caution should be taken when using this approach, and they provide criteria to distinguish between intrusive and deformation structures in intensely deformed areas where distinction between the two is not readily apparent. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.Cite