Magma injection directions inferred from a fabric study of the Popes Harbour dike, eastern shore, Nova Scotia, Canada
1988; Geological Society of America; Volume: 16; Issue: 6 Linguagem: Inglês
10.1130/0091-7613(1988)016 2.3.co;2
ISSN1943-2682
AutoresJohn D. Greenough, Alan Ruffman, J. Victor Owen,
Tópico(s)Geological formations and processes
ResumoResearch Article| June 01, 1988 Magma injection directions inferred from a fabric study of the Popes Harbour dike, eastern shore, Nova Scotia, Canada John D. Greenough; John D. Greenough 1Department of Geology, Mount Allison University, Sackville, New Brunswick EOA 3CO, Canada Search for other works by this author on: GSW Google Scholar Alan Ruffman; Alan Ruffman 2Geomarine Associates Ltd., Box 41, Station M, 5112 Prince Street, Halifax, Nova Scotia B3J 2L4, Canada Search for other works by this author on: GSW Google Scholar J. Victor Owen J. Victor Owen 3Department of Geology, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information John D. Greenough 1Department of Geology, Mount Allison University, Sackville, New Brunswick EOA 3CO, Canada Alan Ruffman 2Geomarine Associates Ltd., Box 41, Station M, 5112 Prince Street, Halifax, Nova Scotia B3J 2L4, Canada J. Victor Owen 3Department of Geology, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1988) 16 (6): 547–550. https://doi.org/10.1130/0091-7613(1988)016 2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation John D. Greenough, Alan Ruffman, J. Victor Owen; Magma injection directions inferred from a fabric study of the Popes Harbour dike, eastern shore, Nova Scotia, Canada. Geology 1988;; 16 (6): 547–550. doi: https://doi.org/10.1130/0091-7613(1988)016 2.3.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 A 15-m-wide dike at Popes Harbour on the eastern shore of Nova Scotia shows an increase in both the size (up to 1 m) and density (up to ∼50%) of predominantly pelitic xenoliths toward the dike center. These features reflect flowage differentiation processes during dike emplacement. Flow direction is indicated by sillimanite xenocrysts that represent the unassimilated products of xenolith disaggregation. The xenocrysts are highly aligned parallel to the dike margins (northwest-southeast), with a mean plunge of 20°SE, suggesting that the magma last moved, and may have been injected, in a subhorizontal, northwestward direction. The available information indicates that lateral injection of magma in mafic dikes is more common than predominantly vertical movement. This study shows that an analysis of fabrics in mafic dikes should be useful in further evaluating the role of lateral magma injection in dike formation. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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