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dc.contributor.authorLeyland, James G.en_US
dc.date.accessioned2009-06-01T19:30:06Z
dc.date.available2009-06-01T19:30:06Z
dc.date.issued1984-06-01T19:30:06Z
dc.identifier.urihttp://hdl.handle.net/10464/1458
dc.description.abstractSediment relationships observed during geological mapping in southeastern Ontario indicate a relatively simple deglaciation history for the area during late Wisconsin time. The ice from the north (part of the Lake Simcoe lobe) and the Lake Ontario ice lobe, which were coalesced during most of late Wisconsin time, initially separated along the crest of the Oak Ridges Moraine. Available data indicate that the Oak Ridges Moraine is composed primarily of sediments pre-late Wisconsin in age capped by late Wisconsin till and interlobate deposits. Retreat of the northern ice was relatively steady and resulted in the deposition of the Dummer Moraines, a facies of the drumlinized till to the south. Retreat of the Lake Ontario ice lobe into the Lake Ontario basin was interrupted by a re-advance which covered the southeastern half of the map area. The northern ice had already retreated from the area by this time. The Lake Ontario lobe was fed through the St. Lawrence Valley, indicating that the Ottawa Valley was ice filled at this time. High level glacial lakes fronted the ice during deglaciation. These waters quickly fell to low levels as the ice retreated from the St. Lawrence Valley, opening lower outlets.en_US
dc.language.isoengen_US
dc.publisherBrock Universityen_US
dc.subjectGeologyen_US
dc.subjectGeology, Stratigraphicen_US
dc.titleQuaternary geology of the Campbellford, Trenton, Consecon, Tweed, Belleville, Wellington, Sydenham, Bath, and Yorkshire Island map-areas, Ontario /en_US
dc.typeElectronic Thesis or Dissertationen_US
dc.degree.nameM.Sc. Earth Sciencesen_US
dc.degree.levelMastersen_US
dc.contributor.departmentDepartment of Earth Sciencesen_US
dc.degree.disciplineFaculty of Mathematics and Scienceen_US


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