Sea bed found at the edge of a continental margin. The shelf usually slopes gradually away from the shoreline to a depth of 200 m, marking a submerged former shoreline, and where an abrupt steepening indicates the edge of the continental slope.
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continental crust (Portion of the earth’s crust that includes both the continents and the continental shelves.)
Sahul shelf (Shallow shelf of land in southeast Asia, now at least 100 m deep under the sea, but exposed ...)
Sunda shelf (Shallow shelf of land in southeast Asia, under less than 100 m of sea water but exposed during ...)