Why is the elevation lf the continental break considered to be related to some past sea level.?
Does this mean that if sea levels froze for long enough a gigantic cliff would develop at every coastline? Why would that ancient coast line have been so closely associated with the continental break.
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- The sea levels would have to drop very considerably for the continental break to be exposed. More than two hundred metres in many parts of the world. You should note that although the continental break is steep, it is not a massive vertical cliff under the water. In many places you might not notice the gradient on the continental break around the east coast of the US the gradient is about 5% (1 in 20) The continental break doesn't represent an ancient coastline, rather it is the boundary between continental rocks and oceanic basalt.
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