高校地质学报2018，Vol.24Issue(2)：297-306,10.DOI:10.16108/j.issn1006-7493.2017103
渤海东部潮流沉积特征及MIS4以来的沉积环境演化
Characteristics of the Tidal Sedimentation in the Eastern Bohai Sea and the Environmental Evolution since MIS4
摘要
Abstract
The typical tidal sedimentations have been discovered in the eastern of the Bohai Sea, which consists of the Laotieshan Channel,the Liaodong Shoal tidal sand ridges,and the Bozhong Shoal tidal sand sheets.In this paper,the sedimentary features and the seismic reflections of the tidal bodies in eastern Bohai Sea are analyzed based on the new high-resolution seismic data from the marine geological survey and the comparison with water depth changes.Combined with the lithology, 14C age data,and stratigraphy of borehole CD5,four stratigraphic sequences have been identified,including the fine sand strata of land facies of MIS4,the silt and clay strata of nearshore facies of MIS3, the silty clay and fine sandy silt strata of land facies of MIS2, and the sand strata of marine facies of Holocene.Furthermore,the sedimentary facies of the Holocene strata can be divided into nearshore,neritic,and tidal environment.The analysis of the four sedimentary facies reveals the evolution of sedimentary environment since MIS4.关键词
渤海/潮流沉积/老铁山水道/冲刷槽/潮流沙脊/潮流沙席/沉积环境Key words
Bohai Sea/tidal sedimentation/the Laotieshan Channel/scour trough/tidal sand ridge/tidal sand sheet/sedimentary environment分类
天文与地球科学引用本文复制引用
陈珊珊,王中波,李日辉,孟祥君,陈晓辉,郭政言..渤海东部潮流沉积特征及MIS4以来的沉积环境演化[J].高校地质学报,2018,24(2):297-306,10.基金项目
国土资源部地质调查专项(GZH200800501 （）
DD20160137 （）
1212011220113 （）
GZH201400205) （）
国家自然科学基金项目(41706069 （）
41206053 （）
41406077 （）
41506119)联合资助 （）
