蓟县运动

  • 网络Jixian movement
蓟县运动蓟县运动
  1. 他在前寒武纪地层研究的贡献是:①发现和命名蓟县运动,正确解决了华北震旦系与寒武系的分界问题;

    His contributions to the study of Precambrian strata are : first discovering and naming Jixian Movement , Properly solving the problem of divide between Sinian System and Cambrian System ;