What sedimentary process is mainly responsible for the accumulation of up to 9 kilometres of sediment in deep ocean trenches?
A)pelagic, biogenous ooze slowly settling from the top of the water column
B)offshore dumping of unending bargeloads of garbage from major cities
C)turbidity currents and submarine landslides from the continental slope and trench walls
D)sunken or subsided coral reefs

Question

Quizplus · Accepted Answer

Turbidity currents, which are underwater landslides, are primarily responsible for the accumulation of sediment in deep ocean trenches. The sediment is eroded from the continental slope and trench walls and transported downward to the ocean floor via these powerful currents. Over time, this sediment can build up to depths of several kilometers.

What Sedimentary Process Is Mainly Responsible for the Accumulation of Up