江西庐山地区早元古代星子群变质作用和岩石地球化学特征

Lithogeochemistry and Metamorphism of the Early Proterozoic Xingzi Group of Lu Shan Area, Jiangxi Province

早元古代星子群遭受吕梁期以低角闪岩相为主的区域动力热流变质作用，变质温度约为５３０－６００℃，压力约为４００－５７０ＭＰａ。根据岩石组合及岩石地球化学特征．推测该群形成于大陆边缘环境。

The early Proterozoic Xingzi Group was subjected to regional dynamothermal metamorphism of Luliang period, dominated by low amphibolite factes with temperature 530-600 ℃and pressure 400 - 570 MPa. On the basis of its rock association and lithogeochemistry, it is inferred that the Xingzi Group was formed in an epicontinental environment.