| 1. | The holocene stratum of quzhou district is quite different from other areas of hebei plain in terms of the buried depth , thickness , depletion rate , color , grain size , structure and pollen assemblages 摘要河北平原南部曲周地区的全新世地层,在埋藏深度、地层厚度、堆积速率和颜色、粒度结构、孢粉含量与种属等方面,与河北平原其他地区不同。 |