南京大学学报（自然科学版）Issue(5)：553-563,11.DOI:10.13232/j.cnki.jnju.2014.05.003
辐射沙脊群兰沙洋潮流通道沉积环境演化研究
Sedimentary environment evolution of Lanshayang tidal channel within the radial sand ridges,southern Yellow Sea
摘要
Abstract
The Lanshayang tidal channel is one of the major tidal channels in the radial sand ridges area of the South Yellow Sea.The evolution of sedimentary environment of the channel since the late Pleistocene is studied based on regional literature review and core data analysis.The analysis of core 07SR09 in the channel includes sedimentary facies,grain size,14 C dating,foraminifera identification,and magnetic susceptibility.The paleo Yangtze River flows into the South Yellow Sea since the late Pleistocene.The results of grain size analysis show that the content of fine sand was decreasing because of the southward movement of the paleo Yangtze River.We argue that this area was in-fluenced by deposition after the southward movement of the paleo Yangtze River,most likely from the paleo Huanghe River,or the finer particles brought by tidal action.And these later deposited fine particles diluted the original sediment grain size composition of this area.According to the analysis of magnetic susceptibility,and the dis-tribution of foraminifera species and quantitative characteristics,the hydrodynamic conditions of the Lanshayang tidal channel have become steady gradually since the late Pleistocene,and the tidal channel is excellent for a natural deepwater channel.关键词
辐射沙脊群/兰沙洋潮流通道/层序分析/沉积环境演化/南黄海Key words
radial sand ridges/Lanshayang tidal channel/sequence analysis/sedimentary environment evolution/southern Yellow Sea引用本文复制引用
孙祝友,王芳,殷勇,黎刚,葛松,许庆华..辐射沙脊群兰沙洋潮流通道沉积环境演化研究[J].南京大学学报（自然科学版）,2014,(5):553-563,11.基金项目
国家海洋局公益性项目(201005006) （201005006）
