本文根据沉积物岩性、孢粉、微体古生物组合特征及年代测定,对九龙江河口平原晚第四纪地层进行了划分与对比。结果表明,北岸平原缺失上更新统下、中段,且全新统厚度小于南岸。研究区晚更新世以来发生两次海侵,分别出现于玉木亚间冰期和全新世。晚更新世晚期,本区主要处于河口港湾的环境,显示出与相邻海域及全球的差异性,这主要是由构造沉降所造成的。 Based on the characteristics of sedimentary lithology, sporopollen, and micro-organism assemblages and dating, the paper divides and contrasts the Late Quaternary strata in the Jiulong River estuary plain. The results show that the northern bank of the plains lack the upper and lower Pleistocene, the middle, and the Holocene less than the thickness of the South Bank. Two transgressions occurred in the study area since the late Pleistocene, and occurred in the Yamu sub-glacial and Holocene, respectively. Late Late Pleistocene, the region mainly in estuarine harbor environment, showing the adjacent sea and global differences, mainly caused by the structural subsidence.