【摘要】 扬子克拉通北缘米仓山地区前震旦纪变质岩系由后河岩群、八角树片麻杂岩和火地垭群组成。研究表明，本区前震旦纪至少发育４期区域变质作用和１期线性动力变质作用更多还原

【Abstract】 The pre Sinian metamorphic series in the Micang Mountain area on the northern margin of the Yangtze Craton consist of the Houhe Group Complex, the Bajiaoshu Gneiss Complex and the Huodiya Group. The study shows that at least four stages of regional metamorphism and one stage of linear dynamic metamorphism are recognized.更多还原