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4. Given the 176Lu/177Hf in question 3 and an age of the zircon of 3Ga, what will the difference be between the 176Hf/177Hf today and

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4. Given the 176Lu/177Hf in question 3 and an age of the zircon of 3Ga, what will the difference be between the 176Hf/177Hf today and the initial value? for 87Rb=1.421011yr1143Nd/144Nd of CHUR today =0.512638 for 147Sm=6.541012yr1 147Sm/144Nd of CHUR today =0.1967

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