Abstract:

Through the observation of the profiles at Maqiao in Nanling, Yueshan inAnqing and Anjicun in Nanjing, the member of breccia, variegated shale and purple sand-shale are found to be successive sedimentation. Their occurrences coincide with each other and discord with underlying Qinglong Group. So the authors suggest that the breccia member should be the basal boundary of the Huangmaqing Group. According to the texture and composition of the breccia member and the differentia between upper and lower structures and their un-comfornity, we consider that Jinzi Movement, the main episode of the Indo-sinian Movement, is a presence.