| Strata on the western Scotian Slope provide a high resolution and continuous record of the late Quaternary glacial processes that took place in the region, as a case timing and behaviour of decaying marine ice sheets in response to climatic change. This study used three principal tools to study the western Scotian Slope; multibeam bathymetry, high-resolution reflection seismic profiles and piston core sediment samples.; Multibeam bathymetry showed glacial fluting and mega lineations on the outer western Scotian Shelf. The clarity and apparent freshness of these features suggest that they were of last glacial maximum (LGM) origin and likely correspond to till tongues observed in the seismic reflection profiles on the upper western Scotian Slope, indicating that ice flow reached the upper western Scotian Slope at LGM.; Four principal lithostratigraphic units were characterized from piston cores and high-resolution seismic reflection profiles. (Abstract shortened by UMI.)... |
