continental rise

noun Physical Geography.
the gently sloping transition between the continental slope and the deep ocean floor, usually characterized by coalescence of submarine alluvial fans. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
continental rise  

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A wide, gentle incline from an ocean bottom to a continental slope. A continental rise consists mainly of silts, muds, and sand, and can be several hundreds of miles wide. Although it usually has a smooth surface, it is sometimes crosscut by submarine canyons.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Then it tapers off into a gentler slope known as the continental rise.
We recognize a regional sediment wedge below the upper part of the continental
At the base of the slope is the continental rise, which is less steep and quite
  broad in places.
The abyssal plain is the basin floor at the base of the continental rise.
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