A study of deformed alkali feldspars from a Precambrian shear zone

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dc.contributor.authorPoirier, Glenn G.
dc.date.accessioned2023-06-07T18:18:13Z
dc.date.available2023-06-07T18:18:13Z
dc.date.issued1984
dc.description.abstractThe specimens used in this study were quartzofelspathic gneisses collected from an upper amphibolite facies shear zone in the Ontario Gneiss Segment of the Grenville Province and were studied using optical, X-ray and EDS/SEM techniques. Results of these studies have shown that the majority of the deformation was due to ductile deformation which produced a significant amount of plastic strain in the feldspar porphyroclasts. Observations of these deformed porphyroclasts suggest that plagioclase and microcline have been dynamically recrystallized by rotation and progressive misorientation of subgrains within the host crystals. Increased deformation was found to decrease the amount of microcline present in the specimens. Other parameters such as Al-Si ordering and composition (as determined by XRD and EDS) were found to remain fairly constant with increasing deformation.
dc.description.copyrightNot available for use outside of the University of New Brunswick
dc.description.note10 unnumbered pages after page 83
dc.description.noteUniversity of New Brunswick. Department of Geology.
dc.format.extentvi, 83 pages
dc.format.mediumelectronic
dc.identifier.urihttps://unbscholar.lib.unb.ca/handle/1882/31586
dc.language.isoen_CA
dc.publisherUniversity of New Brunswick
dc.rightshttp://purl.org/coar/access_right/c_16ec
dc.subject.disciplineEarth Sciences
dc.titleA study of deformed alkali feldspars from a Precambrian shear zone
dc.typesenior report
thesis.degree.disciplineEarth Sciences
thesis.degree.fullnameBachelor of Science
thesis.degree.grantorUniversity of New Brunswick
thesis.degree.levelundergraduate
thesis.degree.nameB.Sc.

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