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Late Wisconsin ice movements and deglaciation: in the N.E. Porcupine Hills area, Alberta
|dc.contributor.advisor||Harris, Stuart A.|
|dc.contributor.author||Love, Michael Andrew|
|dc.identifier.citation||Love, M. A. (1977). Late Wisconsin ice movements and deglaciation: in the N.E. Porcupine Hills area, Alberta (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/23589||en_US|
|dc.description||Bibliography: p. 101-112.||en|
|dc.description.abstract||The study of a 1476 km2 area located in the N.E. Porcupine Hills of Southwest Alberta, has provided most evidence for the movement and retreat of two Late Wisconsinan ice masses; the hybrid Marguerite (western) and Lochend (eastern) ice sheets. Although most evidence is given for the last glaciation, information is cited which relates to the earlier eastern Labuma and Maunsell advances of glacial Events Three and Two age respectively. No deposits from earlier western incursions of ice have been found, though it is known from mapping in an adjacent area to the west (Waters, 1975) that such advances entered that area. _x000D_ Evidence relating to the Labuma advance consists of the high level igneolis and metamorphic erratics. Maunsell deposits are much more coherent and may be found in a small zone in the southwest portion of the area. Hybrid Marguerite till displays mixed characteristics, though on the basis of pebble lithology it can easily be differentiated from the eastern tills in the area. The hybrid Marguerite glacier undoubtedly assimilated foreign eastern material as it flowed southwards over areas previously traversed by Laurentide advances. It was deflected southwards by the Lochend ice sheet which lay to the east of the mountains. Laboratory analyses confirm the eastern origin of the Lochend till. Both ice masses are considered to have been coeval. _x000D_ During deglaciation, which was effected by both ice stagnation and orderly re treat, a large proglacial lake (Lake Eden) was impounded in the area for which two still-stands have been recognized. An efficient system of meltwater channels formed at this time as the lake was drained. From 14c dates given by various researchers (e.g. Harris and Boydell, 1972) the area most probably became free of ice during the very early Holocene.|
|dc.format.extent||xii, 133 leaves : ill. ; 30 cm.||en|
|dc.rights||University 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.lcc||GB 588.15 L67 1977 Microfiche||en|
|dc.subject.lcsh||Glacial landforms - Alberta - Porcupine Hills|
|dc.subject.lcsh||Geomorphology - Alberta - Porcupine Hills|
|dc.title||Late Wisconsin ice movements and deglaciation: in the N.E. Porcupine Hills area, Alberta|
|dc.publisher.institution||University of Calgary||en|
|thesis.degree.name||Master of Science (MSc)|
|thesis.degree.grantor||University of Calgary|
|dc.identifier.lcc||GB 588.15 L67 1977 Microfiche||en|
|ucalgary.thesis.accession||Theses Collection 58.002:Box 296 82480996|
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University 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.