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Continental Shelf Sediments |
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| The figure below is representative of a number of crustal cross-sections across the continental shelf of the eastern Atlantic seaboard of North America. The critical point is the huge thicknesses of Mesozoic and Tertiary sediments, here shown as almost 15 km, but in other cross-sections this can be even thicker. Note that at the bottom of this pile are volcanics and volcanogenic sediments, and evaporites, which most likely are shallow water. Also, massive carbonate reef structures, which must also be shallow water, but also must indicate progressive subsidence slow enough that shallow water sedimentation can keep pace with it. |
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