Title: Ropy flow structures: A neglected indicator of magma-flow direction in sills and dikes
Abstract: Research Article| August 01, 2002 Ropy flow structures: A neglected indicator of magma-flow direction in sills and dikes Dirk Liss; Dirk Liss 1Department of Earth Sciences, University of Birmingham, Birmingham B15 2TT, UK Search for other works by this author on: GSW Google Scholar Donald H.W. Hutton; Donald H.W. Hutton 1Department of Earth Sciences, University of Birmingham, Birmingham B15 2TT, UK Search for other works by this author on: GSW Google Scholar William H. Owens William H. Owens 1Department of Earth Sciences, University of Birmingham, Birmingham B15 2TT, UK Search for other works by this author on: GSW Google Scholar Author and Article Information Dirk Liss 1Department of Earth Sciences, University of Birmingham, Birmingham B15 2TT, UK Donald H.W. Hutton 1Department of Earth Sciences, University of Birmingham, Birmingham B15 2TT, UK William H. Owens 1Department of Earth Sciences, University of Birmingham, Birmingham B15 2TT, UK Publisher: Geological Society of America Received: 23 Jan 2002 Revision Received: 24 Apr 2002 Accepted: 30 Apr 2002 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2002) 30 (8): 715–718. https://doi.org/10.1130/0091-7613(2002)030<0715:RFSANI>2.0.CO;2 Article history Received: 23 Jan 2002 Revision Received: 24 Apr 2002 Accepted: 30 Apr 2002 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Dirk Liss, Donald H.W. Hutton, William H. Owens; Ropy flow structures: A neglected indicator of magma-flow direction in sills and dikes. Geology 2002;; 30 (8): 715–718. doi: https://doi.org/10.1130/0091-7613(2002)030<0715:RFSANI>2.0.CO;2 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 Ropy flow structures that form in dikes and sills are very similar to ropy lava structures (pahoehoe), but are of intrusive origin. They are unusual among magma-flow indicators in that they provide a frozen record of the magma flow. Our observations suggest that they occur in large vesicles, which form as a result of local repeated pressure drops during propagation and emplacement of the magma. Adiabatic gas expansion causes a ductile rim to form around a vesicle; this rim is then sheared by the underlying flow. Anisotropy of magnetic susceptibility data from the contact zones confirm the flow data from the ropy flow structures, but the results from deeper within the body, both locally and regionally, yield different, yet consistent flow orientations. This discrepancy suggests that a distinction can be made between the magma flow close to the contact and the deeper regional flow patterns in sills and dikes. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2002
Publication Date: 2002-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 45
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