CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Graham, D.J.
Date : 1997.
Title : The Neoglacial history of Akshayuk Pass, Baffin Island, Canada, using lichenometry and rock weathering techniques.
Publication : Unpublished B.Sc. thesis, University of Nottingham.
Issue :
Page(s) :
Abstract
Baffin Island is highly sensitive to climate change and is currently marginally glaciated. There is widespread landscape evidence of late Holocene glacial activity on the island. Various landscape features provide evidence of the extent and timing of this activity. These can be used to aid modelling of climate change over this period. The massive ice cored moraines of Akshayuk Pass provide an obvious record of recent glacial activity. Thirteen of these moraines were examined using lichenometry and rock weathering techniques. Rock weathering techniques were found to have insufficient resolution to differentiate between these surfaces. Four glacial advances and subsequent retreats during the last 3500 years are described, based on evidence from lichenometry. Tentative ages for these events are presented. Correct interpretation of the chronology presented requires an understanding of the relationship between climate change and moraine formation. This relationship is described. Evidence is presented of differences in glacier response between different parts of Baffin Island. Possible reasons for this are examined. Claims of correlation between the Neoglacial records from across Baffin Island are evaluated in the light of the new evidence. Little support can be found for a widespread correlation.
Bibliography of Canadian Geomorphology