Author(s): LI Xiaoyan, ZHAO Quanhong, YAO Zhengquan, WANG Qiang, JIAN Zhimin, SHI Xuefa, State Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, State Key Laboratory of Marine Geology, Tongji University, Tianjin Institute of Geology and Mineral Resources
Pages: 93-108
Year: 2015 Issue:  6
Journal: Marine Geology & Quaternary Geology
Keyword:  transgressive succession; foraminifera; ostracoda; Bohai Sea; China; Quaternary;
Abstract: Based on the quantitative foraminiferal and ostracod study of 271 samples taken from the Core BH08(38.28°N,119.99°E,water depth 25 m,core length 212.4m),a total of 16 marine beds,labeled M1 to M16from top to bottom,has been recognized.The chronological study demonstrates that the 16 marine beds were deposited during the interglacials of the last million years.The paleoenvironmental data inferred from foraminiferal and ostracod communities may be grouped into 5biofacies with marine influence from strong to week:offshore inner shelve(M9),nearshore inner shelve with weak river influence(M1and M2),pro-delta or nearshore inner shelve with moderate river influence(M6,M7,M8,M10,and upper M13),delta front,tidal flat of river mouth or semi-closed brackish lagoon under the river control(M3,M4,M5,M11,M12 and M14to M16),and supra-littoral marsh or shallow lake of low salinity(top M3,some interlayers of M4 and bottom M16).