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东海E1孔水深100m,是迄今东海陆架水深最深、采样最密、研究最详细的钻孔。依据有孔虫动物群的研究和碳同位素测年,可将E1孔的地层分成3段:S_1—S_3(0.00～3.34m)为全新统;S_4—S_(24)(3.34～53.43m)为晚更新统;S_(25)(53.43～55.63m)为中更新统。有孔虫以浮游种类为主,属热带至亚热带动物群。研究发现本区自晚更新世以来有3次高海面期:第一次高海面期与长江三角洲平原的镇江海进、华北平原的天津海进和华南的长乐海进相当,属全新世,为外浅海环境;第二次高海面期与长江三角洲平原的隔湖海进、华北平原的沧州海进、和华南的福州海进相当,属晚更新世晚期,为外浅海环境;第三次高海面期与长江三角洲的江阴海进、华北平原的白洋淀海进相当,属晚更新世早期,为中至外浅海环境。在最晚中更新世低海面期本区曾暴露成陆。
East China Sea E1 hole depth of 100m, so far the East China Sea shelf depth, sampling the most dense, the most detailed study of the borehole. According to the study of foraminiferal fauna and carbon isotope dating, the strata of E1 boreholes can be divided into three segments: S_1-S_3 (0.00 ~ 3.34m) for the Holocene; S_4-S_ (24) (3.34 ~ 53.43m) Late Pleistocene; S_ (25) (53.43 ~ 55.63m) is the middle Pleistocene. Foraminifera species mainly floating, belonging to tropical to subtropical fauna. The study found that there are three high-sea-level periods since the late Pleistocene. The first high-sea-surface period is the same as that of Zhenjiang Haicheng in the Yangtze River Delta Plain, Haijin in Tianjin in the North China Plain and Changle in the South China, and belongs to the Holocene Shallow sea environment; the second high-sea surface and the Yangtze River Delta across the lake into the sea, Cangzhou in the North China Sea coast, and the South China Sea, Fuzhou quite, late Late Pleistocene, the shallow outer sea environment; the third high The sea surface is similar to that of the Jiangyin sea in the Yangtze River Delta and the sea of Baiyangdian in the North China Plain. It belongs to the early Pleistocene and is in the middle to the shallow sea environment. At the latest Middle Pleistocene low sea level this area has been exposed to land.