SEA-LEVEL CHANGES IN NORTH CHINA DURING THE LATE PALAEOZOIC

On the basis of the study of depositional sequences on the North China plate,the au-thors consider that the Late Palaeozoic depositional sequences in North China were formed in a second-ordre sea-level change cycle,which consists of four third-order sea-level change cycles developed during the early time of early Late Carboniferous,the late time of early Late Carboniferous to late Late Carboniferous,Early Permian and early Middle Permian to early Late Permian,respectively.Each third-order sea-level change cycle,in turn,comprises several fourth-order rise and fall cycles.The sea-level changes have the worldwide and syn-chronous features.The second-and third-order sea-level changes in the study area may be comparable with those on the Russian platform and North American platform.