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| The underwater part of the continental crust. |
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| A type of active margin where two plates are sliding past one another. |
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| Where the Nazca Plate is being subducted beneath the South American Plate. |
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| A submarine canyon that extends more than 400 kilometers out to sea, from the mouth of New York's Hudson River out along the continental rise, where it reaches a depth of more than two kilometers. |
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| The flat or gently sloping submerged part of the continent; extends from the shoreline out to the continental slope. |
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| The steep boundary between the continental shelf and the continental rise. |
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| A gently rolling undersea slope between a continental slope and an abyssal plain. |
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| active continental margin |
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Definition
| A continental margin at which an oceanic plate is subducting under a continental plate, characterized by the presence of a narrow continental shelf and a deep-sea trench. |
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| passive continental margin |
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| A continental margin that does not occur along a plate boundary. |
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| An undersea gully that cuts through the continental shelf and continental slope. |
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| An undersea landslide of mud and sand, triggered by earthquakes or by gravity, that speeds down the continental slope carving out channels. |
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