...a fairly large, nearly flat seafloor elevation bounded on one or more sides by a slope (see figure 1 in the entry on submarine topography). A broad plateau that appears on the edge of a continental slope is called a marginal plateau, and is bounded on one side by a steep slope. The Blake Plateau off the coast of Florida (depth 700-1000 m) is a plateau deeper than the nearby continental shelf, and is thought to be the result of ocean currents preventing sedimentation, while the Campbell Plateau south of New Zealand (depth 500-1000 m) is thought to be the result of subsidence due to faulting. *Some of the terminology explanations that refer to "marginal plateau" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…かなりの広さを有するほぼ平たんな海底の高まりで,その一方ないしそれ以上の方向が斜面で境されている地形(〈海底地形〉の項目の図1参照)。大陸斜面の縁辺に現れる広い台地を縁辺海台といい,一方が急斜面で境される型である。フロリダ沖のブレーク海台(水深700~1000m)は付近の大陸棚より深い台地で,海流が堆積を妨げた結果とされており,ニュージーランド南方のキャンベル海台(水深500~1000m)は断層による沈降の結果とされている。… ※「縁辺海台」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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