CGRG Bibliography of Canadian Geomorphology
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Author : Blais, A.
Date : 1989
Title : Lennoxville Glaciation of the Middle Chaudiere and Etchemin Valleys, Beauce Region, Quebec
Publication : Unpublished M.Sc. thesis. Carleton University, Ottawa
Issue :
Page(s) : 161 p.
Abstract
The objective of this study was to interpret the late-Wisconsinan glacial and deglacial events in the central Chaudiere Valley. To achieve this objective a 1:50 000 scale map was compiled of glacial and post-glacial sediments. In addition to the sediment mapping, glacial striae were measured and compiled, geochemical dispersal was mapped for the surface till, and till stratigraphy was defined by measuring sections and determining fabrics. Texture, structure and paleocurrents of ice-contact stratified drift were studied to determine the style of deglaciation in the region. Northward ice flow, that was previously known in the study area, was believed to have been caused by a calving bay penetrating up the St. Lawrence channel, producing in the ice sheet an embayment that interrupted southeastward ice flow across the St. Lawrence depression, even west of where the bay actually existed. Ice left south of the channel was thought to have flowed northward as a result, toward the axis of drawdown. On the basis of previous work and field observations made during this study, a model for the last Wisconsinan Lennoxville glaciation has been synthesized.
Bibliography of Canadian Geomorphology