The age of granulite facies metamorphism of Baishahe rock series is early Paleozoic rather than early Proterozoic,it was certified by zircon SHRIMP age of from Al-rich gneiss.

• 白沙河岩系泥质变质岩石的变质锆石SHRIMP微区定年表明、白日其利沟以及金水口等地的白沙河岩系局部麻粒岩相变质作用时代为早古生代，而不是前人认为的早元古代。