Petrogenesis of the peralkaline granite (and associated syenite) dykes of the Straumsvola Complex, Western Dronning Maud Land, Antarctica

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dc.contributor.advisorHarris, Chrisen_ZA
dc.contributor.advisorLe Roux, Petrusen_ZA
dc.contributor.authorDreyer, Tanya Shaynaen_ZA
dc.date.accessioned2016-06-09T11:15:58Z
dc.date.available2016-06-09T11:15:58Z
dc.date.issued2015en_ZA
dc.description.abstractThe Straumsvola nepheline syenite complex in Western Dronning Maud Land, Antarctica consists of an outer massive and inner layered nepheline syenite that is itself intruded by ijolite. The complex and its immediate country rock was intruded by numerous dykes. A small proportion of these dykes are peralkaline syenite and microgranite, and these are found only to intrude the nepheline syenite and not the country rock. The presence of peralkaline granite dykes intruding a silica-undersaturated complex is unexpected, given the thermal divide that exists at low pressures between silica-under and -oversaturated phases. Major and trace element variations in the dykes are found to be consistent with fractional crystallisation of a parental peralkaline magma of trachyte composition.en_ZA
dc.identifier.apacitationDreyer, T. S. (2015). <i>Petrogenesis of the peralkaline granite (and associated syenite) dykes of the Straumsvola Complex, Western Dronning Maud Land, Antarctica</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Geological Sciences. Retrieved from http://hdl.handle.net/11427/19964en_ZA
dc.identifier.chicagocitationDreyer, Tanya Shayna. <i>"Petrogenesis of the peralkaline granite (and associated syenite) dykes of the Straumsvola Complex, Western Dronning Maud Land, Antarctica."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Geological Sciences, 2015. http://hdl.handle.net/11427/19964en_ZA
dc.identifier.citationDreyer, T. 2015. Petrogenesis of the peralkaline granite (and associated syenite) dykes of the Straumsvola Complex, Western Dronning Maud Land, Antarctica. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Dreyer, Tanya Shayna AB - The Straumsvola nepheline syenite complex in Western Dronning Maud Land, Antarctica consists of an outer massive and inner layered nepheline syenite that is itself intruded by ijolite. The complex and its immediate country rock was intruded by numerous dykes. A small proportion of these dykes are peralkaline syenite and microgranite, and these are found only to intrude the nepheline syenite and not the country rock. The presence of peralkaline granite dykes intruding a silica-undersaturated complex is unexpected, given the thermal divide that exists at low pressures between silica-under and -oversaturated phases. Major and trace element variations in the dykes are found to be consistent with fractional crystallisation of a parental peralkaline magma of trachyte composition. DA - 2015 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 T1 - Petrogenesis of the peralkaline granite (and associated syenite) dykes of the Straumsvola Complex, Western Dronning Maud Land, Antarctica TI - Petrogenesis of the peralkaline granite (and associated syenite) dykes of the Straumsvola Complex, Western Dronning Maud Land, Antarctica UR - http://hdl.handle.net/11427/19964 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/19964
dc.identifier.vancouvercitationDreyer TS. Petrogenesis of the peralkaline granite (and associated syenite) dykes of the Straumsvola Complex, Western Dronning Maud Land, Antarctica. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Geological Sciences, 2015 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/19964en_ZA
dc.language.isoEngen_ZA
dc.publisher.departmentDepartment of Geological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherGeochemistryen_ZA
dc.titlePetrogenesis of the peralkaline granite (and associated syenite) dykes of the Straumsvola Complex, Western Dronning Maud Land, Antarcticaen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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