• 责任者：Liu Jun (School of Geosciences ; Yangtze University ; Wuhan 430100 ; China) ; Luo Shunshe
• 刊名：Sedimentary Geology and Tethyan Geology
• 出版年：2013
• 卷期：33(1)
• 关键词：沉积相 ; sedimentary facies ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.42-48
• 图表：illus., 1 table, 9 refs.
• 分类号：0803
• issnNo：ISSN1009-3850
• isbnNo：CN51-1593/P

The integration of the petrology, colour, sedimentary structures, organic fossils and granulometric analysis shows that the Chang-6 oil reservoirs in the Dingbian-Wuqi region, Ordos Basin are assigned to the braided delta-lacustrine deposits which may be grouped into the delta plain, delta front and abyssal to bathyal lake subfacies. The sediment sources dominantly come from the northwest and northeast of the Basin. In a plan view, there are two subaqueous distributary channels oriented NE to SW and NW to SE, respectively. From Chang-63 to Chang-61, the study area displays a depositional pattern of lake regression, including southward migration of the lake strandline, the gradual decrease of the abyssal to bathyal lake area, and the increase of the northern delta plain area.