Origin of the band of quartzofeldspathic rocks along the north shore of Falcon Lake, Manitoba

dc.contributor.author	Pearse, G. H. K.	en_US
dc.date.accessioned	2012-05-10T21:14:56Z
dc.date.available	2012-05-10T21:14:56Z
dc.date.issued	1969	en_US
dc.degree.discipline	Geology	en_US
dc.degree.level	Master of Science (M.Sc.)	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.identifier	ocm72795989	en_US
dc.identifier.uri	http://hdl.handle.net/1993/5640
dc.language.iso	eng	en_US
dc.rights	open access	en_US
dc.title	Origin of the band of quartzofeldspathic rocks along the north shore of Falcon Lake, Manitoba	en_US
dc.type	master thesis	en_US
local.subject.manitoba	yes	en_US

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