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from the subduction zone in Oregon extends only 100 miles or so in from the coast, and even the Rockies required a special explanation as to why they are so far inland; the Appalachians are too far away to have been affected by subduction under Oregon. We can see that the Appalachians don’t make a circle around a hot spot; they make a long belt parallel to the east coast. The Appalachians are way older than Death Valley, and with the Great Plains in-between, it is clear that the influence of Death Valley does not extend to rumpling rocks near the east coast.Your Response:CPoints Earned:1/14.Icebergs float in water and continents float above the mantle because:Points Earned:1/1
5.The cartoon above illustrates a specific geologic process. Which of the additional geologic images DOES NOT feature this same process at work?
Points Earned:1/16.If two drifting continents run into each other:Points Earned:1/1
7.What sort of rock is the dark material very close to the pink granite that Dr. Alley is pointing to in the picture above?