The formation of eskers based on their morphology, stratigraphy, and litholologic composition, Labrador, Canada. (Volumes I and II)

The distribution and drainage patterns of eskers in Labrador, as well as the morphology, stratigraphy and lithologic composition of five systems located in central ("Gabbro" and "Ossokmanuan" eskers), western ("Shabogamo" and "Ashuanipi" eskers) and northern Labrador ("Lac Brisson" esker) were investigated to propose a model of esker formation and debris entrainment. Eskers are not uniformly distributed, and are more abundant on plateau areas while they are scarce to absent in mountainous terrain, near all coasts, and in a region centred over the presumed ice divide of the Labradorean sector of the Laurentide Ice Sheet. Eskers show a Horton drainage organization with up to third order segments (7 of 25 systems have 3...