Two phases of sinistral ductile shearing occurred along the eastern terminal of the Dabieo rogen and western terminal of the Su-Lu orogen, w hich developed during the syn-orogenic pe-riod and Early Cretaceous respectively. Only Early Cretaceous sinistral shearing was found in southern part of the Zhangbaling Rise. These shear zones were composite ones, composed of several smaller ductile shear belts. The my lonites in the shear zones showed steep mylonitic foliation and gentle mineral elongation lineation. All of the filed surveys, microstructures and quartz C axis fabrics indicated a sinistral shear sense. Newly-formed mineral assem blages and mineral deformation behaviors demons trated that both of the earlier and later shear zones along the eastern terminal of the Dabie orogen were developed under metam orphic temperature conditions of middle greenschist facies, the shear zone along southern part of the Zhangbaling Rise was formed underm etamorphic temperature conditions of higher greenschist facies, and both of the earlier and later shear zones along the western terminal of the Su-Lu orogen were developed under metamorphic temperature conditions of higher amphibolite facies. E lectron microprobe analysis on matrix white mica of the my lonites suggested that the shear zones along the eastern terminal of the Dabie orogen and southern part of the Zhangbaling Rise were developed under low-pressure conditions, and those along the western terminal of the Su-Lu orogen were formed under high-pressure eclogite facies conditions. These detailed structural studies demonstrated that the Tan-Lu fault zone appeared as sinistral strike-slip tectonics during the collision of the North and South China plates, and intense left-lateral displacement took place again along the fault zone in the circum-Pacific domain in the Early Cretaceous.
Zhu Guang,Xu Youde,Liu Guosheng et al. STRUCTURAL AND DEFORMATIONAL CHARACTERISTICS OF STRIKE-SLIPPINGS ALONG THE MIDDLE-SOUTHERN SECTOR OF THE TAN-LU FAULT ZONE[J]. Chinese Journal of Geology, 2006, (2): 226-241,255.