Mineralogical and geochemical investigation of the cordierite-anthophyllite rocks at Star Lake, near Sherridon, Manitoba
dc.contributor.author | Leroux, Marc V. | en_US |
dc.date.accessioned | 2012-05-23T21:02:07Z | |
dc.date.available | 2012-05-23T21:02:07Z | |
dc.date.issued | 1989 | en_US |
dc.degree.discipline | Geological Sciences | en_US |
dc.degree.level | Master of Science (M.Sc.) | en_US |
dc.description.abstract | The Sherridon Group, a stratigraphic unit of the Kisseynew gneiss belt, near Sherridon, Manitoba is typically dominated by quartz-rich gneisses. Discontinuous lenses of cordierite-anthophyllite rocks, the focus of the present study, occur within these quartz-biotite gneiss units. These cordierite-anthophyllite gneisses are extremely coarse-grained in places, and are spatially associated with barren (Star Lake) and sulfide-mineralized zones (Sherridon; Elken Lake). The present chemical composition of the Star Lake-Elken Lake gneisses indicates hydrothermal alteration of a basaltic progenitor producing chlorite-rich alteration pipes. This alteration involves a depletion in alkali and alkaline earth elements with an apparent enrichment in Al and Mg as a function of constant summation. These chemical modifications are the result of reactions between heated seawater and basaltic rocks of the crust. A modern analogue of the Sherridon Group environment might be the shelf and slope deposits of modern island arcs. | en_US |
dc.format.extent | xiv, 177 [i.e. 202] leaves : | en_US |
dc.identifier | ocm72751300 | en_US |
dc.identifier.uri | http://hdl.handle.net/1993/7189 | |
dc.language.iso | eng | en_US |
dc.rights | open access | en_US |
dc.title | Mineralogical and geochemical investigation of the cordierite-anthophyllite rocks at Star Lake, near Sherridon, Manitoba | en_US |
dc.type | master thesis | en_US |
local.subject.manitoba | yes | en_US |
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