Mass movement along the inner wall of the Middle America Trench, Costa Rica.

Abstract

Characteristics of material subject to reworking during downslope mass flow include a generally homogeneous texture, lack of sedimentary structures, pervasive presence of a penetrative scaly fabric, and presence of transported benthic foraminifers. Downslope sediment creep is presently most active in the upper 45 to 50m of sediment. Mass movements and downslope reworking accumulate sediments in a mobile layer of material that is self-limiting in thickness.-from Authors