Morphology and sedimentation in Lake Wakatipu, New Zealand

Abstract

Lake Wakatipu occupies an overdeepened glacial trough dammed by former terminal moraine. The steep subaerial slopes above the lake continue steeply below the surface of the water to a plane floor that is horizontal in the central and most of the southern sections and slopes longitudinally in the northern section. Below the general level of the sediment surface, a system of current channels has been developed, extending from the delta of the Dart and Rees Rivers to the flat‐floored sedimentary basin in the central and southern section. Active deposition of sediment from density currents is taking place; the action of such currents is discussed. © 1970 Taylor & Francis Ltd.