Characteristics and Genetic Mechanism of "Broom-Like Syn-Depositional Faults" in West Segment of Central Uplift Belt in Dongying Depression

详细信息   

• 责任者：Xu Shumei (Key Laboratory of Submarine Geosciences and Prospecting Techniques ; Ministry of Education ; Qingdao 266100 ; China) ; Ma Yun
• 刊名：Marine Geology & Quaternary Geology
• 出版年：2011
• 卷期：31(6)
• 关键词：生长断层 ; growth faults ; 东营凹陷 ; Dongying Sag
• 页码：p.75-83
• 图表：7 illus., 23 refs.
• 分类号：0300
• issnNo：ISSN0256-1492
• isbnNo：CN37-1117/P

摘要

 The development characteristic of the "broom like faults" in the west segment of the central uplift zone in the Dongying Depression was discussed in this paper by calculating the growth coefficient of the faults. The results show that the main faults and the subsidiaries of the "Broom like faults" are not synchronous according to their growth index. The subsidiary faults have their highest growth index in the 3rd Member of the Shahejie Formation of mid Eocene, while the main faults have that in the 2st Member of Shahejie Formation of late Eocene. It is concluded that the "quasi-broom like faults" were the result of the joint action of the independent extensional tectonic system and the SN strike and strike-slip system in NE direction.