摘要
东海残留沉积区舟山QZ504孔未发现上海地区普遍存在的全新世暗绿色硬粘土层。但通过对该孔微体古生物组合特征的分析与对比,划分了全新世与更新世的界线,反映了气候的变化,证实了洋流对本区的影响。
The dark green hard clay layer that under the Holocene sediments in the Shanghai region was not discovered in QZ504 drilling hole, which placed in the relict sediment region of Zhoushan, East China Sea. Based on the analysis of its microfossils assemblage and its dive-sion, the boundary between Holocene and Pleistocene was definited and the climatic fluctuation of Late Quaternary was reflected. It also proved that this region was influenced by ocean current.
出处
《上海地质》
1995年第1期45-54,68,共11页
关键词
古生物
组合特征
地层划分
地层划分
全新世
Glacial Era Transgresion formation Relict sediment Paleontology assem-blage Paleonclimate
