| A | B |
|---|
| muds | Mixtures of fine particles of various sizes that have a greasy feel. |
| clays | Sediments made primarily of clay-sized particles. |
| oozes | Sediments made from microscopic shells. |
| abyssal hill | Small, rolling hill that is part of the floor of an ocean basin. |
| turbidites | Deposits made by turbidity currents. |
| manganese nodules | Lumps of material made from minerals rich in manganese and iron oxides. |
| atoll | Ring-shaped coral island. |
| guyot | Flat-topped seamount. |
| submarine canyon | Gigantic gully cut into a continental slope. |
| turbidity current | Undersea landslides down the continental slopes. |
| seamount | Cone-shaped mountain peak that rises high above the deep ocean floor. |
| authigenic | Formed in place. |
| continental slope | Begins at the shelf edge where water depth starts to increase rapidly. |
| abyssal plain | Flattest area of the deep seafloor. |
| continental rise | Gently sloping region between the continental slope and the ocean basin. |
| continental shelf | Part of a continent that is underwater. |
