• 责任者：Lü Qiang (Institute of Sedimentary Geology ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Zhao Junxing
• 刊名：Journal of Chengdu University of Technology
• 出版年：2008
• 卷期：35(6)
• 关键词：盆地分析 ; basin analysis ; 物源区 ; provenance ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.610-616
• 图表：9 illus., 11 refs.
• 分类号：0803
• issnNo：ISSN1671-9727
• isbnNo：CN51-1634/N

Based on the research of heavy minerals, debris and clastic composition, this paper indicates that there are mainly three sediment source regions and six sub-source areas in Ordos Basin. The authors consider that the Fuxian delta from the east sources does not exit in the Yanchang mid-period by studying the provenance and paleogeography and comparing lithology and paleontological. Finally, the paper also discusses the bottom shape of the lake basin of Yanchang period in Ordos based on the research of the distribution feature of mudstone of Member 7 of Yanchang Formation, effective hydrocarbon source rocks, seismic profile and sedimentary facies. The results show that the basin is wider in the north, steeper in the south, steeper in the west and wider in the east of Ordos Basin, and at the same time, the northeast delta belongs to a gentle-slope lake delta system, but the south and southwest delta mainly belongs to a steep-slope fan-delta and there exists turbidite fan sediment on the end of the delta front.