摘要
在晚寒武世，华北陆表海位于赤道附近的南热带，由于明显变化的天文周期对古气候的影响，广泛发育了风暴沉积及风暴沉积序列。根据不同级别天文周期的旋回率，在华北晚寒武世地层中识别并归并为３次特大型风暴旋回，１１次大型风暴旋回。这些风暴旋回可作为地层对比的标志，从而得出晚寒武世华北陆表海盆地的演化特征。
The epeiric sea of Huabei platform in late cambrian was situated in the southern tropics near equator. As the distinct changes of the astronomical period affected paloeoclimate, it developed the storm deposit and storm sequences in different environments. According to the different cycle ratioes of astronomical period, the three super larger scale cycles, eleven larger scale cycles have been identified and merged into in the strata of late Cambrian on Huabei platform.There super and larger scale cycles can act as a kind of mark of stratigraphic correlation so that the evolution feature of the epeiric sea is concluded during the late Cambrian epoch on Huabei platform.
关键词
天文周期
风暴作用
地层对比
华北
晚寒武世
astronomical period. storm cycle, stratigraphic correlation. Haubei platform. late Combrian epoch.
