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通过对渤海湾西南部平原DC01孔的岩石地层学、生物地层学及年代地层学和地球化学研究,重建了该地区自晚更新世以来的地质环境演化过程。全新世之前,研究区经历了由河流-盐沼-潮间带上部/低盐沼-河口湾-泻湖-淡化泻湖的环境转化过程;进入全新世之后,该区经历了由湖沼到河流的环境转化过程。埋深22.4~12.7m发育近10m厚的弱海相沉积,AMS~(14)C年龄表明,该层沉积形成时间早于4.35ka cal BP,可能属于MIS 3早期(6.0~5.5ka cal BP)或更早的MIS 5期(12~8ka cal BP)。恢复了该时期的相对古海面,最高可达-13.31m。DC01孔缺失MIS 4~2或MIS 2时期的沉积。
Based on the lithostratigraphy, bio-stratigraphy, and stratigraphy and geochemistry of the hole DC01 in the southwestern plain of Bohai Bay, the evolution of the geological environment in the area since the late Pleistocene has been rebuilt. Prior to Holocene, the study area underwent environmental transformation from river-salt marsh-upper intertidal zone / low salt marsh-estuary-lagoon-desalination lagoon; after entering the Holocene, the area underwent an environment from lake to river Conversion process. The AMS ~ (14) C ages indicate that the sedimentary formation time of this layer was earlier than 4.35 ka cal BP, which may belong to the early MIS 3 (6.0-5.5 ka cal BP) Or earlier MIS 5 (12-8 ka cal BP). Restored relatively ancient sea surface of the period, up to -13.31m. DC01 hole missing MIS 4 ~ 2 or MIS 2 deposition period.