At the junction area of the eastern part of the Dabie orogenic belt （DOB） and the southern part of the Tan-Lu fault zone （TLFZ）, there exposed a series of transformed structures, which played an important role in revealing the transformation relationship between the two tectonic belts. This paper has studied the geometry and chronology characteristics of these transformed structures, and found that two different transformed structures are separately NE-striking gneiss belt in larger scale and NE-striking gneiss in smaller scale dragged by NE-striking mylonite belts. Zircon U-Pb dating towards transformed gneiss, synchronous vein and mylonite separately gave the results as 812～719 Ma; 803～629 Ma, 242～208 Ma, 176-127 Ma; 735～650 Ma, 288～216 Ma. Combined with chronological analysis before, we conclude that the transformed structures of larger scale may represent the initial formation of the TLFZ controlled by the Dabie Orogen. The shear activity of mylonite zones developed since Early Jurassic, which basically controlled by the Pacific plate subduction beneath the Eurasian plate.
Wang Wei Song Chuanzhong Li Jiahao Lai Dongrong Wang Andong. Characteristics of structures in the junction area of the Dabie orogenic belt and the Tan-Lu fault zone[J]. Chinese Journal of Geology, 2019, 54(3): 837-852.