Abyssal hills in Cape Verde Basin, NE Atlantic, near the foot of the continental rise about 1000 km W of Cap Blanc, W Africa. Added to Thesaurus in 1989.
Aleutian abyssal plain, W Pacific Ocean. Drilled to provide information on the geologic history of the Pacific and Kula plates and the formation of the Aleutian Trench. Added to Thesaurus in 1989.