Supported by the National Natural Science Foundation of China (Grant Nos. 40102017, 40572123 and the 40472101);Doctoral Programme of Higher Educa-tion (Grant No. 2000000128)
The Louzidian ductile shear zone at the south of Chifeng strikes NE-SW and dips SE at low-medium- angles. This ductile shear zone is mainly composed of granitic mylonite, which grades structurally upward into a chlori...