准噶尔盆地西北缘乌夏断裂带构造特征及物理模拟实验

李萧; 劳海港; 胡秋媛; 赵利

doi:10.11781/sysydz201704567

准噶尔盆地西北缘乌夏断裂带构造特征及物理模拟实验

doi: 10.11781/sysydz201704567

李萧¹,
劳海港^2, ,,
胡秋媛¹,
赵利³

1.
中国石油大学胜利学院油气工程学院, 山东东营 257000
2. 华北理工大学矿业工程学院, 河北唐山 063009
3. 中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126

基金项目: 国家自然科学基金项目（40772132）和中国石油大学胜利学院重点科研计划项目（KY2015013）资助。

详细信息

作者简介:
李萧(1987—),硕士,助教,从事构造地质学研究。E-mail:136930394@qq.com。

通讯作者:
劳海港(1978—),博士,讲师,从事盆地构造解析研究。E-mail:haigang1609@126.com。

中图分类号: TE121.2
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出版历程
- 收稿日期: 2017-01-25
- 修回日期: 2017-05-31
- 刊出日期: 2017-07-28

Tectonic evolution and its physical simulation of Wuxia fault belt in the northwestern margin of Junggar Basin

1.
Department of Oil & Gas Engineering, Shengli College of China University of Petroleum, Dongying, Shandong 257000, China
2. College of Mining Engineering, North China University of Science and Technology, Tangshan, Hebei 063009, China
3. Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China

摘要

摘要: 依据大量地震勘探资料，对准噶尔盆地西北缘乌夏断裂带的构造特征进行了系统研究，并将其构造演化划分为碰撞前陆盆地、前陆盆地逆冲推覆、陆内拗陷逆冲褶皱、陆内拗陷抬升剥蚀和覆盖定型5个阶段。在此基础上，采用构造物理模拟实验方法对研究区典型剖面晚石炭世以来的构造演化进行了正演模拟，取得了与实际地质情况较高的吻合度。模拟结果表明，乌夏断裂带经历了由前陆盆地“前展式”逆冲向陆内拗陷“后展式”逆冲的转变。同时，实验结果进一步证实，NW-SE向挤压应力场的控制是乌夏断裂带形成、演化的根本原因，其主要受控于板块活动及造山带、边界控盆断裂的活动等关键因素。
- 构造特征 /
- 物理模拟实验 /
- 乌夏断裂带 /
- 准噶尔盆地西北缘
Abstract: The tectonic characteristics of the Wuxia fault belt in the northwestern margin of the Junggar Basin were systemically studied based on a large number of 3D seismic data. The study area has experienced five tectonic evolution periods, including the collision of foreland basin, thrust-nappe structure of foreland basin, thrusting fold of interior depression, uplift and denudation of interior depression, and cover setting. The forward modeling of the tectonic evolution of some typical profiles ever since the Late Carboniferous fit well with actual geological conditions. The results showed that the Wuxia fault belt transformed from the thrust with piggy back in foreland basin to thrusting with overstep in the interior depression. Experimental results also indicated that the formation and development of Wuxia fault belt were mainly controlled by the NW-SE oriented compressive stress field, which was mainly affected by some key factors such as plate activities, orogenic belts, and frontier basin-controlling faults.
- tectonic characteristics /
- physical simulation experiment /
- Wuxia fault belt /
- northwestern margin of Junggar Basin

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参考文献(16)

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