lang=EN-US>Early Tectonic Evolution and Sedimentary Response of Ordos Basin:A Case Study of Interval 8～lang=EN-US>Interval 6 Oil Layers of Yanchang Formation in Jiyuan Area

• 责任者：Wang Changyong (Institute of Sedimentary Geology ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Zheng Rongcai
• 刊名：Geology in China
• 出版年：2010
• 卷期：37(1)
• 关键词：盆地演化 ; basin evolution ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.134-143
• 图表：5 illus., 3 tables, 35 refs.
• 分类号：0803
• issnNo：ISSN1000-3657
• isbnNo：CN11-1167/P

lang=EN-US>Based on an analysis of rock component characteristics, sedimentary facies characteristics, development regularity of seismites and tuff in Interval 8～lang=EN-US>Interval 6 oil layers of Yanchang Formation, the authors put forward a method for investigating the early structural evolution and the process of sedimentary response. Researches indicate that Qinling was uplifted at the early depositional stage of Interval 8 whereas Liupanshan was uplifted at the late depositional stage of Interval 7. The depositional period from Interval 8 to Interval 6 of Yanchang Formation is regarded as the early formation period of Ordos Basin in the Mesozoic. The tectofacies of Interval 8 is relatively stable, and there exist no seismites and carbonate debris in the sandstone, only with the development of shallow water delta in the study area.