The abandoned glacial lake shorelines of southwest Labrador.
Institution: | McGill University |
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Department: | Department of Geography. |
Degree: | MS. |
Year: | 1964 |
Keywords: | Glacial landforms – Labrador, Southwest.; Physical geography – Labrador, Southwest. |
Record ID: | 1581256 |
Full text PDF: | http://digitool.library.mcgill.ca/thesisfile111316.pdf |
The purpose of this thesis is to describe in detail the fonn, lithology, elevation, tflt and distribution of abandoned glacial lake shoreline features and associated fluvioglacial and glacial deposits of Southwest Labrador Qnap 1). These characteristics are the result of distinct geomorphic and geophysical processes operating in late glacial and post glacial times and therefore a study of these characteristics reveals certain facts about the glacierization of Labrador-Ungava* and the deglaci erization of Southwest Labrador. The tilt of the glacial lake shoreline features is a result of glacial isostatic recovery and therefore the tilt of the shorelines reflects the differentiai thickness of the laurentide lee Sheet over Southwest Labrador during a certain stage in the Wisconsin period. If tilts of shorelines in other areas are used in conjunction with the tilts from Southwest Labrador it is possible to locate a point which represents a centre of ice dispersal of the Laurentide lee Sheet during a certain stage in the Wisconsin period.