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单颗锆石ＵＰｂ 年龄测定结果显示，星子变质核杂岩中的海会花岗岩岩体的形成年龄为１２２ Ｍａ～１３０ Ｍａ，表明星子变质核杂岩形成于中生代，这与当时华南岩石圈的伸展构造环境一致。花岗岩中１ ７２３±３４８ Ｍａ的残留锆石年代信息显示，海会花岗岩是由古元古代地壳重熔形成的。扬子古陆南缘确实存在古元古代的基底
The results of U-Pb dating of single zircon show that the age of the Haihui granite in the Xingzi metamorphic core complex is 122 Ma ~ 130 Ma, indicating that the Xingzi metamorphic core complex was formed in the Mesozoic age, which was similar to the then South China lithosphere The extension of the construction environment. The age of remaining zircons of 1 723 ± 348 Ma in granite information shows that the Haihui granites were formed by the re-melting of Palaeo-Proterozoic crust. The ancient basement of the Paleozoic existed in the southern margin of Yangtze ancient land