Show simple item record

dc.contributor.supervisorChakhmouradian, Anton (Geological Sciences)en
dc.contributor.authorElliott, Barrett
dc.date.accessioned2009-08-24T22:26:26Z
dc.date.available2009-08-24T22:26:26Z
dc.date.issued2009-08-24T22:26:26Z
dc.identifier.urihttp://hdl.handle.net/1993/3179
dc.description.abstractThe first documented carbonatites in Manitoba occur as dykes and pods up to 15 meters in length and several meters in width at Eden Lake hosted in a post-orogenic syenitic complex within the Trans-Hudson Orogen. The carbonatites consist dominantly of calcite with lesser clinopyroxene, feldspar, apatite and titanite. Primary and xenocrystic clinopyroxene have distinct compositions, whereas xenocrystic feldspar has well-developed plagioclase and alanite rims. The whole-rock major- and trace-element composition of the carbonatite is consistent with global averages for calcio-carbonatites. Stable-isotope compositions of calcite indicate an igneous origin; the low δ13C ratios may reflect the influence of subducted sedimentary carbonate. A zircon age of 1815±8 Ma corresponds with the time of emplacement, whereas younger titanite ages reflect local thermal history. Although field relations suggest a genetic link to the host syenites, whole-rock geochemical data is incompatible with immiscibility or crystal fractionation models, suggesting a discrete mantle source for the carbonatite.en
dc.format.extent7860903 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoengen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectCarbonatiteen
dc.subjectManitoba geologyen
dc.subjectTrans-Hudson Orogenen
dc.subjectEden Lakeen
dc.subjectAlkaline rocksen
dc.titleA mineralogical, geochemical and geochronological study of postorogenic carbonatites in the Eden Lake complex, northern Manitoba.en
dc.typeinfo:eu-repo/semantics/masterThesis
dc.typemaster thesisen_US
dc.degree.disciplineGeological Sciencesen_US
dc.contributor.examiningcommitteeSherriff, Barbara (Geological Sciences) Mumin, Hamid (Department of Geology, Brandon University)en
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.noteOctober 2009en
local.subject.manitobayesen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record