硬质黏土

  • Hard clay;【冶】flint clay
硬质黏土硬质黏土
  1. 杭州湾地区末次冰盛期第一硬质黏土层粒度特征及其环境意义

    Grain-size characteristics of the first hard clay and their environmental implications during the last glacial maximum in the Hangzhou Bay region