地质学报2012，Vol.86Issue(10)：1696-1712,17.
MIS 3晚期以来江苏中部海岸的层序地层
Sequence Stratigraphy of the Central Part of North Jiangsu Coasts since Late MIS 3, Eastern China
摘要
Abstract
Based on the re-study of core 07SR01 and the seismic profile in Xiyang tidal channel off north Jiangsu coasts using multidisciplinary methods, such as geomorphology, sedimentology, chronostratigraphy. seismic stratigraphy and sequence stratigraphy, and the further stratigraphic correlation between core 07SR01 and adjacent studied cores, this paper confirmed that the sea area experienced a series of environmental changes mainly controlled by sea level changes since about 35 ka BP(late MIS 3) , sediment supply of paleo-rivcrs that flowed to the South Yellow Sea and minor structural subsidence, which are coastal barrier island, freshwater lacustrinc-swamp, rivcr-floodplain, coastal marsh, tidal sand ridges and tidal channel. Thus, the parasequence of the late period of the last interstadial, including high-stand system tract and forced regressive wedge system tract, and the parasequence of the postglacial period, including transgressive system tract and highstand system tract, belonged to the fifth-order sequence stratigraphy have developed. The tidal sand ridges in sea area might begin to develop since the seawater covered the study area during the postglacial transgression about 9 cal ka BP, just were submerged sand ridges until the Yellow River switched its river mouth southward to north Jiangsu during 1128~ 1855 A. D. . Especially when the Yellow River totally captured the Huaihe River after 1494 A. D. , a huge amount of sediments filled the tidal channel, some submerged sand ridges could develop to emerged ones. The development of Xiyang tidal channel was not due to the erosion of tidal sand ridges during the late Holocene, it has had an embryonic form since the highest sea level period in Holoccne and lasted unii] ] 128 A. D. , and became a modern tidal channel, experiencing a process of silting during 1128~ 1855 A. D. and scouring during 1855 A. D. ~now, influenced by the Yellow River. Xiyang tidal channel had a tendency of broadening and deepening to some extent in the future, influenced by strong ticlai current scouring and human beings activities.关键词
MIS 3/南黄海/江苏中部海岸/潮流沙脊/西洋潮流通道/层序地层Key words
MIS 3/ the South Yellow Sea/ the central part of north Jiangsu coasts/ tidal sand ridges/ the Xiyang tidal channel/ sequence stratigraphy引用本文复制引用
夏非,殷勇,王强,张永战,刘敬圃..MIS 3晚期以来江苏中部海岸的层序地层[J].地质学报,2012,86(10):1696-1712,17.基金项目
本文为国家自然科学基金项目(编号40776023,40872107) （编号40776023,40872107）
江苏近海海洋综合调查与评价(编号JS908)第五专题"南黄海辐射状沙脊群调查与评价"专项(编号JS-908-01-05) （编号JS908）
国家海洋局海洋公益性行业科研专项"南黄海辐射沙脊群空间开发利用及环境生态评价技术"(编号201005006) （编号201005006）
国家建设高水平大学公派研究生项目(编号2011619035)共同资助的成果. （编号2011619035）
