• 责任者：Zhong Yujia (Laboratory for Earth Surface Processes ; College of Urban and Environmental Sciences ; MOE ; Peking University ; Beijing 100871 ; China) ; Mo Duowen
• 刊名：Acta Scientiarum Naturalium Universitatis Pekinensis
• 出版年：2011
• 卷期：47(4)
• 关键词：现代沉积 ; recent deposit ; 古环境 ; paleoenvironment ; 江汉平原 ; Jianghan Plain
• 页码：p.711-718
• 图表：5 illus., 1 table, 48 refs.
• 分类号：1400
• 出版序号：1174
• issnNo：ISSN0479-8023
• isbnNo：CN11-2442/N

The Caidangxi profile is in the north of Jianghan Plain, Hubei Province, China. Synthetic analysis of grain size, chemical elements and pollen of sedimentary samples from Caidangxi profile reveal the paleo-environmental changes since 1250 AD of the area. The sediments of the profile dominantly consist of clay silts. The sedimentary characteristics, such as grain size and the sorting coefficient, together with the analysis geomorphic position on which the deposition occurred, may indicate that the sediments were deposited by sheet flood mainly from Han River in a slow hydrodynamic depositional process. The sedimentary characteristics also show some similarities with the loess sediments for that some materials were derived from the loess distributed in this river basin. It also might be one of the reasons for the intensified flood process during the same time.