Show simple item record Pearse, G. H. K. en_US 2012-05-10T21:14:56Z 2012-05-10T21:14:56Z 1969 en_US
dc.identifier ocm72795989 en_US
dc.description.abstract Petrographic and chemical studies were made to determine the origin of a band of quartzo-feldspathic rocks enclosed in andesites, basalts and basic tuffs. A primary origin is examined, in which the zone is considered to be acid to intermediate volcanic rocks which were deposited during a normal volcanic cycle; a secondary origin is also considered, in which pervasive alkali-silica metasomatism has replaced basic volcanic flows and tuffs along a shear zone. Gradational features observed in the quartzo-feldspathic band indicate that at least a limited amount of metasomatic transfer of material has occurred. The mechanisms which could have given rise to such a zone include: hydrothermal solutions from a nearby igneous intrusion conducted along a shear zone in the lavas, solphateric alteration, autometamorphism including diagenesis, and dynamic and regional metamorphism. en_US
dc.format.extent 80 leaves : en_US
dc.language en en_US
dc.rights en_US
dc.rights info:eu-repo/semantics/openAccess
dc.title Origin of the band of quartzofeldspathic rocks along the north shore of Falcon Lake, Manitoba en_US
dc.type info:eu-repo/semantics/masterThesis Geology en_US

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