Lithological and glacial geomorphological studies near the erratics terrain, Calgary area, Alberta

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dc.contributor.advisorNelson, James Gordon
dc.contributor.authorMorgan, Alan Vivian
dc.coverage.spatial200000501en
dc.date.accessioned2005-07-15T19:59:34Z
dc.date.available2005-07-15T19:59:34Z
dc.date.issued1966
dc.descriptionBibliography: p. 154-163.en
dc.description.abstractThis study is an attempt to determine the lithology of tills in the minity of the Foothills Erratics Train in order to learn more about the origin of this train, the interrelation between Cordilleran and Laurentide ice sheets, and. the glacial history of the Calgary area. Pebble lithology was determined and. recorded at 1.5.5 sites distributed over the study area, using igneous and metamorphic, carbonate, and brown and purple quartzite pebbles as indicatorso Mega-erratics of similar lithology were noted over the entire map region. Isolithological maps were prepared for the respective indicators whilst distribution maps were drawn for the different mega-erratic groupso In the course of field work on pebble lithology a number of different deposits were mapped These included. widespread lacustrine sediments , spillway systems , shoreline levels, deltas and other indicators of former lake levels, as well as areas of ground and hummocky moraine, glacio-fluvial features , and periglacial structures. Landforms such as drumlins and eskers were also mapped in the field , whilst fluting directions and washboard moraine areas were studied on air photographs. Conclusions were reached as to the origin of many of the above mentioned features which were also utilized in reconstructing the glacial history of the area The Foothills Erratics Train possibly originated as a giant rockslide or rockslides onto the surface of a glacier near Mount Edith Cavell, Jasper The quartzite erratics , many in excess of one hundred tons, were emplaced in the study area during the retreat of the Wisconsin ice , and prior to, or contemporaneous with, glacial Lake Calgary. At least three major glaciers covered the study area the Cordilleran ice sheet, the Erratics Train glacier and the Jaurentide ice sheet . The possibility exists that further glaciers may have been incorporated into the western edge of the Laurentide ice. A periglacial environment existed during the deposition of waterworked gravels which cap Nose Hill and Cairn Heights. The gravels are believed to pre-date the earliest ice advance but are probably of Pleistocene age- The first glacial advance is thought to be Cordilleran in origin, followed by a Laurentide advance which went at least as far as the western boundary of the study areao The first Laureritide ice sheet was probably over one thousand feet thicker than the Erratics Train glacier.. During deglaciation a series of lakes was trapped between the ice front and the regional slope Ice retreat north and eastward is marked by a number of meltwater channels and sandurs, both of which are believed to have been partly ice marginal and partly superglacial. A periglacial climate existed after the retreat of the last ice from the region.
dc.format.extentxiii, 178 leaves : ill. ; 30 cm.en
dc.identifier82481489en
dc.identifier.citationMorgan, A. V. (1966). Lithological and glacial geomorphological studies near the erratics terrain, Calgary area, Alberta (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/23347en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/23347
dc.identifier.otherBarcode: 82481489en
dc.identifier.urihttp://hdl.handle.net/1880/1872
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.relationAdditonal Copy: GB 428.5 C2 M67 1966a Geologyen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject.lcshGeomorphology - Alberta - Calgary
dc.titleLithological and glacial geomorphological studies near the erratics terrain, Calgary area, Alberta
dc.typemaster thesis
thesis.degree.disciplineGeography
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.thesis.additionalcopyGB 428.5 C2 M67 1966a Geologyen
ucalgary.thesis.notesPLen
ucalgary.thesis.uarcreleasenoen
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