摘要
大量钴孔岩芯的岩性特征,微体古生物硅藻和有孔虫化石组合,以及^(14)C测年结果揭示,闽江河口区发育两期海侵地层。表明本区在晚第四纪期间至少经历了两次海侵事件,发生于距今44000～22000a的玉木亚间冰期海侵相对较弱,其范围仅达福州市区一带,另一次海侵发生于距今12000a以来的冰后期,该次海侵较为广泛,其范围可达闽侯的甘蔗一带。
The analyses of lithologic characteristics, microfossil assemblages of diatoms and foraminifera, as well as ^(14)C datings from many boreholes reveal that there are two Late Quaternary transgressive formations developed in the estuary of Minjiang River, indicating that the study area has been subjected to at least two marine transgressions during Late Quaternary. Of which, the Würm Interstadial transgression occurred between 44000 and 22000 years B. P. is relatively weak, and the sea water had reached the urban districts of the Fuzhou City. The more extensive transgression is the Postglacial Transgression took place since 12000 years B. P., and the sea water had once reached the areas of Ganzhe, Minhou County.
出处
《福建师范大学学报（自然科学版）》
CAS
CSCD
1993年第1期86-90,共5页
Journal of Fujian Normal University：Natural Science Edition
关键词
闽江河口区
海侵地层
第四纪
Minjiang estuary, Late Quaternary transgressive formation, process of marine transgression
