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Geochemistry and petrogenesis of the Proterozoic Pater metavolcanic suite, Spragge, Ontario /

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Show simple item record Lorek, Edward G. en_US 2009-06-15T17:00:46Z 2009-06-15T17:00:46Z 1987-06-15T17:00:46Z
dc.description.abstract The Pater metavolcanic suite (PVS) was extruded as part O'f the basal Pater Formation of the Huronian Supergroup ca. 2.4 Ga. They Ars classified as wi thin-plate tholeiites associated with an immature ri-fting episode, and are inter layered with associated vol cani clastic and metasedimentary units. Post-solidif ication alteration caused redistribution o-f the alkalies, Sr, Rb, Ba, Cu, and SiO^. Ce, Y, Zr, CFezOs (as total Fe), Al^Os, TiOa, and, PaOa are considered to have remained essentially immobile in least altered samples. Petrogenetic modelling indicates the PVS was derived from the partial melting of two geochemical ly similar sources in the sub-continental lithosphere. Fractionation was characterized by an oli vine-plagioclase assemblage and a sub-volcanic plagioclase-clinopyroxene assemblage. A comparative study indicates that enrichment of the postulated Huronian source cannot be reconciled by Archean contamination. Enrichment is thought to have been caused by hydrous veined metasomatic heterogeneities in the sub-continental lithosphere, generated by an Archean subduct ion event before 2.68 Ga. en_US
dc.language.iso eng en_US
dc.publisher Brock University en_US
dc.subject Geochemistry en_US
dc.subject Petrogenesis en_US
dc.subject Geology, Stratigraphic en_US
dc.subject Volcanic ash, tuff, etc. en_US
dc.title Geochemistry and petrogenesis of the Proterozoic Pater metavolcanic suite, Spragge, Ontario / en_US
dc.type Electronic Thesis or Dissertation en_US M.Sc. Earth Sciences en_US Masters en_US
dc.contributor.department Department of Earth Sciences en_US Faculty of Mathematics and Science en_US

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