Sandbox Physical Simulation on“Different Period-Different Direction” Deformation Process of Strike-Slip Faults：A Case Study of Northern Segment of Shunbei No. 5 Fault in Tarim Basin

被引：2

作者：

Fu X. ^{[1
]}

Feng J. ^{[1
]}

Wang H. ^{[1
]}

Deng S. ^{[2
,3
]}

Ma Q. ^{[3
]}

Lan M. ^{[3
]}

Yi Z. ^{[1
]}

机构：

[1] School of Earth Sciences, Northeast Petroleum University, Daqing

[2] Petroleum Exploration and Production Research Institute, SINOPEC, Beijing

[3] Northeast Oilfield Branch Company Ltd., SINOPEC, Urumqi

来源：

Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2023年 / 48卷 / 06期

关键词：

deformation period; formation mechanism; petroleum geology; sandbox physical simulation; strike-slip fault; Tarim basin;

D O I：

10.3799/dqkx.2022.475

中图分类号：

学科分类号：

摘要：

Shunbei No. 5 strike-slip fault is a small-scale strike-slip fault zone in Shunbei and its surroundings of Tarim basin, which can be divided into three section: north, middle and south. In this paper, the northern segment of Shunbei No. 5 fault is selected as the research object, and the deformation characteristics and formation mechanism of the strike-slip fault are clarified by using the structural physical simulation experiment. The results show that the main features of the northern segment of Shunbei No. 5 fault are multi-segment, and three types of structural styles are developed, i.e., translational strike-slip type, compression-uplift type and pull-apart type. The main active period of the north segment is the Middle Caledonian stage III and the Late Caledonian stage, which is characterized by two stages of metasomatic superimposed deformation, and the early stage (T74 interface) is characterized by the segment growth of various combinations, the late stage (T70 interface) shows the distribution characteristics of echelon normal faults. Based on the sandbox physical simulation of the north segment of Shunbei No. 5 fault, it is confirmed that the early strike-slip action controls the deformation characteristics of the fault segments, and the late transtensional action controls the distribution law of the echelon-type fault. Therefore, the“different period-different direction”superimposed deformation controls the deformation process and formation mechanism of strike-slip fault in the northern segment of Shunbei No. 5 fault. © 2023 China University of Geosciences. All rights reserved.

引用

页码：2104 / 2116

页数：12

共 32 条

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