Hf isotopes of the 3.8 Ga zircons in eastern Hebei Province, China: Implications for early crustal e

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Zircon U-Pb dating indicates that the fuchsite quartzite in eastern Hebei Province was derived from weathering and erosion of the 3.6-3.8 Ga granitic rocks. In-situ zircon Hf analyses show that the Lu-Hf isotopic system remained closed during later therma
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