Microfossilanalysis reveals three transgression layers in the CQJ4 borehole, which are at 4.
微体生物分析显示该孔岩芯记录了三个海侵层，分别位于4。
2
The sea level changes of Holocene in Shanghai region are discussed in this paper based on the spore - pollen and microfossilanalysis of Zhaoxiang core.