A structural analysis of the San Antonio Formation, Rice Lake area, Manitoba

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dc.contributor.authorRector, Roger Josephen_US
dc.date.accessioned2012-05-09T20:17:06Z
dc.date.available2012-05-09T20:17:06Z
dc.date.issued1966en_US
dc.degree.disciplineGeologyen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractThe San Antonio formation is a feldspathic quartzite which has been folded into an anticline - syncline pair. The limb common to both folds is overturned to the south. Mesoscopic data indicate that the syncline plunges to the east; macroscopic and mesoscopic data indicate that the anticline plunges to the northwest. The anticline appears to be a product of flexural slip folding followed by slip folding along the foliation plane. A study of the microfabric reveals that the c-axes of the detrital quartz grains are preferentially orientated. Four maxima lie in two mutually perpendicular planes which contain "B1" and are 45* from "a" and "c". The maxima also lie on the surface of a cone, the axis of which is "B1". and the apical angle of which is 136*. This fabric is interpreted to be the preferential orientation of quartz along incipient S planes due to a compressive stress acting in the direction of the "a" geometric axis. The formation has been folded above an unconformity surface which may have acted as a decollement. The intrusion of a potassic rich granite north of the San Antonio formation appears to have caused the formation to be thrust southward. The thrusting was accompanied by folding in the San Antonio formation.en_US
dc.format.extent80 leaves :en_US
dc.identifierocm72799979en_US
dc.identifier.urihttp://hdl.handle.net/1993/5415
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.titleA structural analysis of the San Antonio Formation, Rice Lake area, Manitobaen_US
dc.typemaster thesisen_US
local.subject.manitobayesen_US
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