• 责任者：Guan Houchun（Institute of Geological Survey of Anhui Province ; Hefei 230001 ; China） ; Li Yunhuai
• 刊名：Geology of Anhui
• 出版年：2009
• 卷期：19(2)
• 关键词：全新世 ; Holocene ; 沉积环境 ; sedimentary environment ; 安徽 ; Anhui Province
• 页码：p.91-95
• 图表：2 illus., 13 refs.
• 分类号：1400
• issnNo：ISSN1005-6157
• isbnNo：CN34-1111/P

This paper made stratigraphic description and grain size analysis of a great number of Quaternary boreholes in the lakeside new district of Hefei City, made statistic analysis of average grain size, sorting coefficient, skewness and kurtosis of the representative borehole ZK1 303, drew samples frequency curve and probability cumulative curve, lithologic basic sequence map based on stratigraphic description, and then discussed sedimentary environment of the area since the Holocene. The results show that there are at least 3 major sedimentary cycles from lower to up for the Holocene strata from this borehole, each cycle is basically gravel-and sand-bearing at the bottom, and fine sand, silty sand, sandy silt, silty clay and clay upward, and there exist at least 11 secondary normal grain-order sedimentary cycles in the three major ones.