A Synthesis of the Distribution of Submarine Mass Movements on the Eastern Canadian Margin

Abstract

Published accounts and unpublished multibeam bathymetry and seismic-reflection profiles have been used to assemble a G.I.S. database documenting the geographic extent of surface and buried Quaternary submarine mass movements on the eastern Canadian margin. These range from small failures in fiords to enormous mass-transport deposits on the continental rise. The patterns of distribution are interpreted in terms of failure processes and large scale physiographic, geologic and glaciologic variability.