The Qinling-Dabie orogenic belt is formed by collision between Yangtze Craton and North China block. By taking the Shangcheng-Macheng fault as the boundary, the Dabie orogenic belt is divided into east part and west part. The West Dabie orogenic belt is the link between Tongbai orogenic belt and Dabie orogenic belt. The geometry, kinematics and metamorphic environment research show that the West Dabie orogenic belt is a giant antiformal structure in the form with west plunging hinge and there is detachment surface between layer structures. Structural analysis indicated that there are at least three stages of deformation in West Dabie orogenic belt. The first phase is the formation of the boundary shear zones. The second phase is the formation of detachment surface and eclogite lens. The third period is intrusion of late rock mass. The statistical results of stress field suggests the West Dabie orogenic belt is mainly affected by NS direction compressional stress, which truthfully recorded the ancient stress state of the West Dabie orogenic belt. Finite strain measurement results show that from north to south, the deformation intensity of the rock has the variation law with strong deformation zone→ weak deformation zone→strong deformation zone→weak deformation zone→strong deformation zone. The Ti-in-muscovite thermometers and the phengite manometers results show that the metamorphic conditions of the West Dabie orogenic belt are T = 450 ℃～620 ℃, P = 1.0～1.6 GPa, which belongs to the blue schist facies to the eclogite facies.
Li Hailong Song Chuanzhong Liu Guoting Li Jiahao Ren Shenglian Zhang Yan Wang Wei Yang Fan Li Zhenwei Yuan Fang. Deformation and metamorphic characteristics of the Xinxian-Hongan area of the West Dabie orogenic belt[J]. Chinese Journal of Geology, 2017, 52(2): 470-486.