Spreading structure of the Troodos ophiolite, Cyprus: Some paleomagnetic constraints

Abstract

Research Article| July 01, 1987 Spreading structure of the Troodos ophiolite, Cyprus: Some paleomagnetic constraints Simon Allerton; Simon Allerton 1School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, England Search for other works by this author on: GSW Google Scholar F. J. Vine F. J. Vine 1School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, England Search for other works by this author on: GSW Google Scholar Author and Article Information Simon Allerton 1School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, England F. J. Vine 1School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, England Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1987) 15 (7): 593–597. https://doi.org/10.1130/0091-7613(1987)15<593:SSOTTO>2.0.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 Simon Allerton, F. J. Vine; Spreading structure of the Troodos ophiolite, Cyprus: Some paleomagnetic constraints. Geology 1987;; 15 (7): 593–597. doi: https://doi.org/10.1130/0091-7613(1987)15<593:SSOTTO>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 It has been suggested that grabens on the northern flank of the Troodos ophiolite formed by listric faulting in an oceanic environment and represent axial valleys fossilized by ridge-jumping. This paleomagnetic survey of the Solea graben was carried out to constrain the structural interpretation.An analysis was devised which restores both the dikes sampled to vertical and the primary remanent magnetizations to a previously derived, structurally corrected, remanent magnetization direction. Typically, two solutions for the original dike orientation and the pole and angle of net rotation are obtained for each dike sampled. These solutions can be separated if a locally consistent original dike strike is assumed. Reasons are discussed for the selection of the solution that gives an original northwesterly dike strike.Results are consistent with a graben: rotations are up to 78° at the sites studied. Rotation vectors are subhorizontal and subparallel to the original dike strike, suggestive of an axial process for the development of the structure. However, on the basis of field observations, an alternative mode of origin is proposed, invoking ephemeral extreme upper crustal extension by listric faulting on the west flank of an intermediate- to fast-spreading axis, the grabens being formed by antithetic faulting. 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.