The Sediments Sequence and Environmental Oscillation of the Core XH-1 in Subei Basin
详细信息
- 责任者：Zhang Maoheng (College of Geography Science ; Nanjing Normal University ; Nanjing 210046 ; China) ; Li Jijun
- 刊名：Geographical Research
- 出版年：2011
- 卷期：30(3)
- 关键词：沉积体系 ; depositional system ; 苏北盆地 ; Subei Basin
- 页码：p.513-522
- 图表：4 illus., 2 tables, 29 refs.
- 分类号：0803
- issnNo：ISSN1000-0585
- isbnNo：CN11-1848/P
摘要
Based on paleomagnetism dating and the grain size of sediments,as well as the paleolitho facies analyzing like mineral composition,deposit structure and sediments assembly,the authors identified 8 sedimentary facies and 19 subfacies of the core XH-1 in Xinghua,Subei Basin.These facies show that the basin had come through four specific intervals as basin subside,construct lake,broad lake and shoal land 3.2 Ma B.P. The changes of topography and the drainage system well recorded the two structure movements during the 2.25～2.10 Ma B.P. and 1.90～1.72 Ma B.P. During and after the Kunhuang Movement 0.99 Ma B.P.,the sediments sequences varied abruptly and confirmed the transformation of the East Asian Monsoon during that time.