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measurement of ocean depths and the charting of the shape or topography of the ocean floor
zones between the coasts and the ocean floor basins; includes continental shelves, slopes and rises, as well as, submarine canyons
thick layers of undisturbed sediment near the coasts; wider in the Atlantic Ocean; more narrow in the Pacific Ocean due to volcanic activity
the steep grade that leads to the deep-ocean floor; marks the end of the seaward edge of the continental shelf
a valley in the continental shelf cut during lower sea level, or cut by turbidity currents
ocean basin floor
area of deep-ocean floor between the continental margin and the oceanic ridge; includes abyssal plains and volcanic peaks
very level area of the deep-ocean floor, usually lying near the foot of the continental rise
a continuous elevated zone on the ocean floor, along divergent plains where plates are pulling apart
sediment made of shells and skeletons of marine life, including algae (calcareous ooze is a type of biogenous ooze)
thick sediment caused by dissolving calcium carbonate shells; not found in the deeper ocean because shells dissolve at 4500 meters
a type of biogenous sediment; made of shells of diatoms (algae) and radiolarians (single-celled animals)
minerals that crystallize from ocean water (a small portion of overall ocean sediment)
How are sediments deposited on abyssal plains?
turbidity currents carry sediments on the ocean floor
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