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5. Given the 67Ma crystallization age of the granite in problem 5, what does the depleted mantle model age that you calculated tell you about
5. Given the 67Ma crystallization age of the granite in problem 5, what does the depleted mantle model age that you calculated tell you about the granite's source and the geologic history of the region (in very broad terms)? for87Rb=1.421011yr1143Nd/144NdofCHURtoday=0.512630for147Sm=6.541012yr1147Sm/144NdofCHURtoday=0.1960
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