A continuous along-slope seismic profile from the Upper Labrador Slope

Abstract

The Plio-Pleistocene Labrador Slope has been shaped by ice-marginal processes of the successive Laurentide ice-caps on the Canadian Shield. Drainage from the Laurentian ice-cap into the Labrador Sea occurred through fjords dissecting the bedrock of the Canadian Shield and through channels across the Labrador Shelf, where these channels are variously called troughs, saddles or channels. To the south of the main outlet in Hudson Strait, these are, in north-to-south order, Karlsefni Trough, unnamed trough, Hopedale Saddle, unnamed saddle, Cartwright Saddle, Hawke Saddle and Notre Dame Channel (Fig. 3.1).