MICROSTRUCTURAL AND METAMORPHIC ANALYSIS OF THE MALTON GNEISS DOME, SOUTHERN CANADIAN CORDILLERA

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dc.contributor.advisorRobinson, Alexander C.
dc.contributor.committeeMemberSisson, Virginia B.
dc.contributor.committeeMemberMurphy, Michael A.
dc.contributor.committeeMemberGuynn, Jerome H.
dc.creatorKabazi, Hana Najed 1986-
dc.date.accessioned2013-12-02T23:24:05Z
dc.date.available2013-12-02T23:24:05Z
dc.date.createdAugust 2013
dc.date.issued2013-08
dc.date.updated2013-12-02T23:24:11Z
dc.description.abstractThe Malton Gneiss Dome is located in the Southern Canadian Cordillera, at the northern most tip of the Shuswap Metamorphic Core Complex (SMCC). It is one of four domes within the SMCC, and is located closest to the foreland. Although deformation fabrics within the SMCC are dominated by E-W/NE-SW verging deformation fabrics, deformation fabrics within the Malton Gneiss Dome show top-NW sense of shear, parallel to the orogenic front. One possible explanation for this difference is the tectonically forced orogen parallel flow model, where foreland directed flow of low-viscosity mid-lower crust encounters a barrier, either thermal or structural, forcing it to flow laterally/parallel to the orogen. This model predicts that orogen parallel fabrics are synchronous with peak metamorphic conditions, during the late-Cretaceous to early-Cenozoic. Peak metamorphic conditions were investigated though quantitative thermobarometry and the relationship between deformation and metamorphism assessed through quartz deformation fabrics. My results show all samples analyzed have experienced amphibolite facies pressure and temperature conditions, with ranges of 600- 775 OC and 400-900 MPa. These conditions are similar to the other domes within the complex. Petrofabric analysis confirmed the orogen parallel movement within the dome coincided with peak metamorphic conditions, indicated by both syn-kinematic garnet and feldspar porphyroblasts which record peak metamorphic conditions.
dc.description.departmentEarth and Atmospheric Sciences, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10657/487
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectMalton Gneiss Dome
dc.subjectTectonically forced orogen parallel flow
dc.subjectGneiss dome
dc.subjectAmphibolite facies
dc.subject.lcshGeology
dc.titleMICROSTRUCTURAL AND METAMORPHIC ANALYSIS OF THE MALTON GNEISS DOME, SOUTHERN CANADIAN CORDILLERA
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Natural Sciences and Mathematics
thesis.degree.departmentEarth and Atmospheric Sciences, Department of
thesis.degree.disciplineGeology
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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