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Zircon xenocrysts from the Early Paleozoic Mengyin and Fuxian diamondiferous kimberlites, on opposite sides of the translithospheric Tanlu fault in the North China Craton, have been used to probe the deep crust. Based on detailed studies of external forms and internal structures, the zircons can be roughly divided into magmatic and metamorphic zircons. There are no consistent differences in U, Th...
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