Sr, Nd and O Isotopic Studies on the Genesis of the Huashan Granite Complex1

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Abstract
Systematical Sr, Nd and O isotopic studies were made on the Huashan granite complex in Guangxi. In combination with the studies of geological, petrological and geochemical data, it is believed that the complex consists of granites of three stages, with different geneses and different source materials. They are not the products of differentiation and evolution of one single consanguineous magma. Granites of the 1st stage are of the Indosinian syntectic type or I type, also derived from a mixed mantle‐crustal source. Those of the 2nd stage are of the early Yanshanian syntectic type or I type, also derived from a mixed mantle‐crustal source, and those of the 3rd stage are of the late Yanshanian transformed type or S type, derived from a crustal source.