• 责任者：Shan Xin (School of Energy Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Liu Chengzhi
• 刊名：Sedimentary Geology and Tethyan Geology
• 出版年：2013
• 卷期：33(1)
• 关键词：河流环境 ; fluvial environment ; 沉积相 ; sedimentary facies ; 黑龙江 ; Heilongjiang River
• 页码：p.12-17
• 图表：illus., 14 refs.
• 分类号：1400
• issnNo：ISSN1009-3850
• isbnNo：CN51-1593/P

The sedimentary characteristics are treated in this study for the Yi ＇an area along the Wuyur River, Heilongjiang. The sediments herein are represented by the fine-grained meandering stream deposits, which vertically display three-phase depositional cycles, i.e. basal, middle and upper cycles, and may be grouped into three sedimentary subfacies, i. e. channel, overbank and natural levee subfacies, and four sedimentary microfacies, i.e. channel lag deposits, point bar, overbank and backswamp microfaeies. The CM patterns based on the granulometric analysis of 30 pieces of samples from individual horizons in the middle cycles display three parts of sediment grain size curves, including the fining-upward graded suspension, homogeneous suspension, and roll suspension, respectively.