Fig 1 - uploaded by William W. Hay
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Width and depth to the shelf break of shelves along the margins of the Atlantic Ocean (After Emery and Uchupi, 1984)
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Context 1
... the depth of the oceanward limit of the continental shelf, the shelf break, varies according to the balance between sediment supply and subsea erosion by waves and currents. Figure 1 shows the varying widths and depths of the shelf break along the classic passive margins of the Atlantic. There is great variability on both sides of the Atlantic, but as a gross generalization, the shelves are wider and the shelf breaks deeper in high latitudes and narrower and Table 1 Areas of shelves to the break in slope along the margins of oceans bordering continents, on fragments of continental crust, and in marginal seas. ...
Context 2
... is converted to calcite upon exposure to fresh water during sea level falls and becomes cemented into a solid layer unaffected by waves and current. Figure 1 also shows that the original choice of 100 fathoms ($200 m), a typical depth of the shelf break off Scotland included in many definitions, is abnormally deep. The average shelf break depth in the Atlantic is 122 m (Emery and Uchupi, 1984). ...
