Characteristics of a Cambrian normal fault system in the Southern Ordos Basin and its formation mechanism

被引：0
|
作者：
Xiong W. [1 ,2 ]
Xiao A. [1 ,2 ]
Wei G. [3 ]
Wu L. [1 ,2 ]
Zhang C. [3 ]
Wang Y. [1 ,2 ]
Yang L. [1 ,2 ]
Wang Q. [4 ]
机构：
[1] Department of Earth Science, Zhejiang University, Hangzhou
[2] Research Center for Structures in Oil and Gas Bearing Basin, Ministry of Education, Hangzhou
[3] PetroChina Research Institute of Petroleum Exploration and Development, Langfang
[4] Zhejiang University School of Medicine, Hangzhou
来源：
Earth Science Frontiers | 2022年 / 29卷 / 06期
关键词：
Cambrian; fault system; inherited; Ordos Basin;
D O I：
10.13745/j.esf.sf.2022.8.11
中图分类号：
学科分类号：
摘要：
The Early Paleozoic deep structures of the Ordos Basin are not well studied due to the complex tectonic superposition and great difficulty accessing the deep strata. Based on seismic data interpretation and field geological survey, we found a Cambrian normal fault system in the southern Ordos Basin made of a set of NE and nearly EW faults. Here, we present a detailed description and analysis of the plane and profile characteristics of this fault system, and combined with regional geological background,discuss the genesis of the fault system. Our results indicate that this fault system is formed by the inherited activities of preexisting Proterozoic NE-trending basement faults in the Cambrian. Meanwhile, small-scale EW-trending newly-generated faults are formed in some segments of the fault system. The discovery of this fault system may be of significance for understanding the evolution of the southern Ordos Basin in the Cambrian as well as for the regional hydrocarbon exploration. © 2022 Science Frontiers editorial department. All rights reserved.
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页码：305 / 313
页数：8
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