The volcanic rocks from Longshan, Feidong in Anhui and Daotuo, Yishui in Shandong, along the Tan-Lu fault zone, were dated. The whole rock K-Ar ages of them was 119.2±2.3 Ma and 114.8±1.0 Ma respectively, which were obviously latter than the time of left-lateral slipping(143.3±1.3 Ma) and coincident with the biotite 40Ar-39Ar ages (120~128 Ma) from the intrusive rocks in Zhangbaling and zircons ages (106.9～121.4 Ma ) from the granites in Feidong-Chaohu area. These ages implied that the Tan-Lu fault zone became, from a large-scale left-lateral slipping in early Early Cretaceous, an extensional one in late Early Cretaceous, and acted as a pathway of magmatic activities, which was related to regional lithospheric thinning in eastern North China Block.
Niu Manlan,Xie Chenglong,Song Chuanzhong et al. K-Ar DATING OF EARLY CRETACEOUS VOLCANIC ROCKS ALONG THE TAN-LU FAULT ZONE AND ITS TECTONIC SIGNIFICANCE[J]. Chinese Journal of Geology, 2007, (2): 382-387.