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根据微体化石、粒度、孢粉、粘土矿物和碳酸钙含量等多项分析资料，以及古地磁、１４Ｃ和ＥＳＲ等项测年资料，划分出７个海相地层，它们是：中更新世中、晚期的Ｈ７（４１７．０～４６０．０ｋａＢ．Ｐ．）和Ｈ６（１５７．５～２３１．３ｋａＢ．Ｐ．）海相层；晚更新世前半期末次间冰期的Ｈ５（１００．６～１２４．３ｋａＢ．Ｐ．）和Ｈ４（７６．５～８７．６ｋａＢ．Ｐ．）海相层，末次冰期里两间冰阶的Ｈ３（５８．２～６７．４ｋａＢ．Ｐ．）和Ｈ２（２８～３６ｋａＢ．Ｐ．）海相层，以及冰后期的Ｈ１（８．５ｋａＢ．Ｐ．以来）海相层。其中Ｈ７为渤海海底最新确定的年代最老的海相层。以Ｓ３孔为主，与渤海中部的ＢＣ－１孔和西部的辛集孔对比，阐明了渤海晚第四纪海侵海退古环境演变历史
Based on a number of analysis data such as microfossil fossils, grain size, sporopollen, clay minerals and calcium carbonate, as well as dating data of paleomagnetic, 14C and ESR, etc., seven marine strata are divided into: , Late H7 (417.0 ~ 460.0kaB.P.) And H6 (157.5 ~ 231.3kaB.P.) Marine facies; H5 (100.6-124) at the end of the last half of the Late Pleistocene .3kaB.P.) And H4 (76.5 ~ 87.6kaB.P.), The H3 (58.2 ~ 67.4kaB.P.) And H2 (28 ~ 36kaB.P.) Marine phase, and the late-glacial H1 (8.5kaB.P.) marine phase. Among them, H7 is the oldest marine layer newly determined in the Bohai Sea. Compared with BC-1 pore in central Bohai Sea and Xinji pore in the west of the Bohai Sea, the S3 pore is the main source of the paleoenvironmental evolution of the late Quaternary transgressions of the Bohai Sea