Magma transport through the crust via interconnected sill complexes

Abstract

Research Article| November 01, 2006 Magma transport through the crust via interconnected sill complexes Joseph Cartwright; Joseph Cartwright 13D Lab, School of Earth, Ocean and Planetary Sciences, Park Place, Cardiff University, Cardiff CF10 3YE, UK Search for other works by this author on: GSW Google Scholar Dorthe Møller Hansen Dorthe Møller Hansen 13D Lab, School of Earth, Ocean and Planetary Sciences, Park Place, Cardiff University, Cardiff CF10 3YE, UK Search for other works by this author on: GSW Google Scholar Author and Article Information Joseph Cartwright 13D Lab, School of Earth, Ocean and Planetary Sciences, Park Place, Cardiff University, Cardiff CF10 3YE, UK Dorthe Møller Hansen 13D Lab, School of Earth, Ocean and Planetary Sciences, Park Place, Cardiff University, Cardiff CF10 3YE, UK Publisher: Geological Society of America Received: 24 Feb 2006 Revision Received: 30 May 2006 Accepted: 31 May 2006 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 The Geological Society of America, Inc. Geology (2006) 34 (11): 929–932. https://doi.org/10.1130/G22758A.1 Article history Received: 24 Feb 2006 Revision Received: 30 May 2006 Accepted: 31 May 2006 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Joseph Cartwright, Dorthe Møller Hansen; Magma transport through the crust via interconnected sill complexes. Geology 2006;; 34 (11): 929–932. doi: https://doi.org/10.1130/G22758A.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 Three-dimensional seismic data from the volcanic margin offshore Norway have been used to map the complex three-dimensional geometry of two major sill complexes. These data show that the complexes consist of bowl-shaped or inclined, sheetlike discordant sills that intersect with one another over a vertical distance of 8–12 km and transect basement and sedimentary rocks of the middle to upper crust. Using a simple graphical technique, we demonstrate the interconnectedness of the sill complex, and hence the maximum time for sill emplacement. We show that sills are interconnected by junctions occurring systematically at the lowest points of the overlying sills, and, hence, that the sill complex could have acted as a single throughgoing magmatic plumbing system, transporting mafic melts from mid-lower crustal depths to near surface. Based on this imaging of the magmatic plumbing system, we conclude that sills can form viable and efficient conduits for crustal magma transport in volcanic margins, and may play a role in feeding large extrusive complexes. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.