The continental shelf refers to the edge of continental crust under the ocean. The crust is thick. because it is continental crust, but it is submerged beneath the ocean. In Google Earth, shallow ocean waters appear light blue while deep ocean waters appear dark blue. This allows us to see the continental shelf: the edge of the shallow water off the shores of most continents. The coordinates of 35° N. 75° W are on the continental shelf off the east coast of North America (near the coast of North Carolina) The crust currently located at those coordinates was located at the following coordinates roughly 208 million years ago: 15° north, 45° west. Note the presence of the Mid-Atlantic Ridge at these coordinates. It is illustrated in Google Earth. How many miles has the crust moved in the past 208 million years? Use the measurement tool in Google Earth to find the distance between the two coordinates

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