*xingyu Jiang^1,2,3 (1.Asian marginal seas have played an important role in modulating regional energy and material exchanges and in deriving climatic and environmental evolutions. 、2.As an effective method, magnetostratigraphy establishes reliable geochronological framework, which is critical for reconstructing long-term history of climatic and environmental changes in the past. 、3.Due to that the previous long-term records were mainly located in the west and north Bohai Sea, thus a new Borehole HLL01, drilled in the Laizhou Bay with a length 450 m, was studied. )

*xingyu Jiang^1,2,3 (1.Asian marginal seas have played an important role in modulating regional energy and material exchanges and in deriving climatic and environmental evolutions. 、2.As an effective method, magnetostratigraphy establishes reliable geochronological framework, which is critical for reconstructing long-term history of climatic and environmental changes in the past. 、3.Due to that the previous long-term records were mainly located in the west and north Bohai Sea, thus a new Borehole HLL01, drilled in the Laizhou Bay with a length 450 m, was studied. )

*Zhiwen Shang^1,2、Fu Wang^1,2、Jianfen Li^1,2、William Marshall³、Yongsheng Chen^1,2、Xingyu Jiang^1,2、Lizhu Tian^1,2、Hong Wang^1,2 (1.Tianjin Centre, China Geological Survey (CGS)、2.Key Laboratory of Muddy Coast Geoenvironment, CGS, Tianjin、3.School of Geography, Earth and Environmental Sciences, University of Plymouth)

*Jianfen Li ^1,2、Hong Wang^1,2、Yongsheng Chen^1,2、Fu Wang^1,2、Zhiwen Shang^1,2、Xingyu Jiang^1,2、Lizhu Tian^1,2 (1.Tianjin Center, China Geological Survey (CGS)、2.Key Laboratory of Muddy Coast Geo-Environment, China Geological Survey, CGS, Tianjin, China)