福建九龙江河口平原晚第四纪地层划分与对比  

Division and Correlation of Late Quaternary Strata in the Jiulongjiang Estuarine Plain,Fujian Province

作　　者：陈文瑞[1] 蓝东兆[2] 陈承惠[2] 

机构地区：[1]南京大学海岸与海岛开发国家试点实验室,南京210093 [2]国家海洋局第三海洋研究所,厦门361005

出　　处：《海洋通报》1997年第4期36-43,共8页Marine Science Bulletin

基　　金：福建省自然科学基金(D95008)

摘　　要：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。After the lithology, sporopollen, diatom and dating are analyzed, the studies on the Late Quaternary stratigraphic division and correlation in the Jiulongjiang Estuarine Plain are carried out. The results show that the Late Quaternary strata in this area can be divided into following formations in age sequence, among which the first three have not been preserved in the northern plain. Moreover, the studies reveal that 2 sea-level transgressions have occured in the study area, one of which is in Wurm Subinterglacial Period, and the other in Postglacial Period. In addition, the results show that the area, due to tectonic subduction, was in the estuary-bay environment over most of Late Wurm Glacial Period, while massive regressions occured in many of other areas.

关 键 词：晚第四纪 地层划分 九龙江河口 地层对比 

分 类 号：P534.63[天文地球—第四纪地质学]