地质通报2016，Vol.35Issue(10)：1705-1714,10.
江苏兴化ZK10孔第四纪多重地层研究
Quaternary multistratigraphic study of Borehole ZK10, Xinghua, Jiangsu Province.
摘要
Abstract
Borehole ZK10 is located in Xinghua City, Jiangsu Province. Based on litho-, bio-, magneto- and chronostratigraphic study of the core sediments, the authors established its Quaternary chronological framework:①The lower boundary of Quaternary, con⁃sistent with the G/M boundary at 2.58Ma, was found at 212m in depth. The Lower Pleistocene in this core was composed of the lower, middle members and lower to mid-parts of the upper member of the Wuduizhen Formation, and corresponded to the pollen zonesⅠ-1 andⅠ-2.②The Early/Middle Pleistocene boundary, in accord with the M/B boundary at 0.78Ma, was found at 120m. This was defined at the boundary between the pollen zonesⅠ-1 andⅡ. The Middle Pleistocene was composed of the top part of upper member of Wuduizhen Formation and the lower member and the lower-to mid-parts of the upper member of the Xiaoyaozhuang Formation. The Wuduizhen Formation was a time-transgressive lithostratigraphical unit across the Lower/Middle Pleistocene.③The Middle/Late Pleistocene boundary at 120ka BP was found at the depth of 81.5m. It lay on the boundary between the pollen zonesⅡandⅢ-1, and essentially coincided with the boundary between Xiaoyaozhuang Formation and Guannan Formation. The latter was another time-transgressive unit crossing both the Middle and Upper Pleistocene. The Upper Pleistocene was composed of the pollen zones Ⅲ-1,Ⅲ-2,ⅣandⅤ.④The Late Pleistocene/Holocene boundary, about 10ka BP, 12.25m, lay on the pollen boundary between zonesⅤandⅥ. Lithostratigraphically, Holocene deposits belong to the Yujian Formation and correspond to the pollen zoneⅥ.关键词
第四纪/介形虫/孢粉/古地磁/AMS 14C年龄Key words
Quaternary/ostracoda/sporopollen/palaeomagnetism/AMS 14C age分类
天文与地球科学引用本文复制引用
劳金秀,杨祝良,于俊杰,蒋仁,彭博,曾剑威,刘晓燕..江苏兴化ZK10孔第四纪多重地层研究[J].地质通报,2016,35(10):1705-1714,10.基金项目
中国地质调查局项目 （）
