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11 Cards in this Set
- Front
- Back
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Continental margin |
That portion of the seafloor adjacent to the continent; it may include the continental shelf, continental slope, and continental rise |
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Continental shelf |
The gently sloping some submerged portion of the continental margin, extending from the shoreline to the continental slope |
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Continental |
The steep gradient that leads to the deep ocean floor and marks the seaward edge of the continental shelf |
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Submarine |
A seaward extension of a valley that was cut on the continental shelf dying a time when sea level was lower; a canyon carved into the outer continental shelf, slope, and rise by turbidity currents |
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Turbidity current |
A down slope movement of dense, sediment laden water created when sand and mud on the continental shelf and slope are dislodged and thrown into suspension |
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Continental rise |
The gently sloping surface at the base of the continental slope |
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Ocean basin floor |
Area of the deep ocean floor between the continental margin and the oceanic ridge |
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Abyssal plain |
Very level area of the deep ocean floor, usually lying at the foot of the continental rise |
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Seamount |
An isolated volcanic peak that rises at least 1000 meters above the deep ocean floor |
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Mid Ocean Ridge |
A continuous elevated zone on the floor of all the major ocean basins and varying in width from 1000 to 4000 km; the rifts at the crests of ridges represent divergent plate boundary's |
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Seafloor spreading |
The process by which plate tectonics produces new oceanic lithosphere at ocean ridges |
