A note on some sedimentary features revealed by echosounding in Lake Malawi, Africa.

Echosounding in the vicinity of the North Rukuru River defines a narrow littoral shelf with water depths of < 10m, an escarpment with slopes of up to 20o descending to depths of 100m, and a deep lake floor continuing to depths of a least 200m on gradients of < 1o. Consideration of factors affecting sedimentation in the large tropical freshwater rift lakes indicates that these systems are particularly prone to mass-gravity transport processes.-from Authors