The descent from the continental shelf to the ocean bottom. Seaward border of a continental shelf. The world's combined continental slope is about 200,000 mi (300,000 km) long and descends at an average angle of about 4° from the edge of the continental shelf to the beginning of the ocean basins at depths of 330-10,500 ft (100-3,200 m). The slope is most gradual off stable coasts without major rivers and is steepest off coasts with young mountain ranges and narrow continental shelves. Slopes off mountainous coastlines and narrow shelves commonly have outcrops of rock. The dominant sediments of continental slopes are muds; there are smaller amounts of sediments of sand or gravel
Part of the continental margin; the ocean floor from the continental shelf to the continental rise or oceanic trench, usually to a depth of about 660 feet (200 meters)
Part of the continental margin; the ocean floor from the continental shelf to the continenetal rise or oceanic trench usually to a depth of about 200 meters The continental slope typically has a relatively steep grade, from 3 to 6 degrees