扎伊尔山冲断-走滑构造演化特征与物理模拟

王鹤华; 吴孔友; 裴仰文; 郭文建; 刘波

扎伊尔山冲断-走滑构造演化特征与物理模拟

1.
中国石油大学地球科学与技术学院, 山东青岛 266580
2.
中国石油新疆油田分公司勘探开发研究院, 新疆克拉玛依 834000

详细信息

作者简介:
王鹤华(1990-), 男, 硕士研究生, 研究方向地质构造与油气成藏。E-mail:whh985704647@163.com

通讯作者:
吴孔友(1971-), 男, 教授, 主要从事地质构造与油气成藏研究。E-mail:wukongyou@163.com

中图分类号: P542
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- 被引次数: 0
出版历程
- 收稿日期: 2014-11-03
- 刊出日期: 2015-03-01

THRUST\STRIKE-SLIP-FAULT BELT STRUCTURES EVOLUTION CHARACTERISTICS AND PHYSICAL MODELING OF ZAIRE MOUNTAIN

1.
School of Geosciences of China University of Petroleum, Qingdao 266580, Shandong, China
2.
Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China

摘要

摘要: 早期认为准噶尔盆地西北缘扎伊尔山构造带是典型的逆冲推覆构造体, 但其在新的过山二维地震剖面上表现出冲断-走滑构造的特征, "石炭系—二叠系挤压推覆"和"三叠系—侏罗系压扭走滑"两阶段形成了前陆冲断带完整的冲断-走滑体系。通过物理模拟西北缘挤压、扭动两个阶段地层、断层性质和样式变化, 证实了西北缘冲断-走滑构造体系的存在, 总结其发育规律, 归纳出平面"川"字型样式和剖面"从"字型模式。地质构造模式的建立为西北缘整体构造认识指出新的方向, 同时对地震解释和井位部署具有重要作用。
- 准噶尔盆地西北缘 /
- 冲断-走滑 /
- 构造演化 /
- 物理模拟
Abstract: As the exploration direction transfers to orogenic belt in the northwestern margin of Junggar Basin, the thrust belt of Zaire Mountain has become the exploration focus. Previously, the thrust belt is thought to be typical over-thrust and nappe belt, but the fault space composition relationships on the seismic sections show thrust\strike-slip-fault belt characteristics. The whole system of thrust\strike-slip-fault belt can be divided into two stages. The first stage is thrust-nappe during Carboniferous to Permian, and the second stage is thrust-torsion strike-slip during Triassic to Jurassic. In the physical simulation experiment, the characteristics and style changes of strata and fault in the two stages above are simulated, and it is confirmed that the thrust\strike-slip system really exists. Summarizing the development rules, we induce "chuan" word style on the plane and "from" word model in profile. The establishment of geological model provides a new direction for understanding the whole northwestern margin structure system. At the same time, it plays an important role in seismic interpretation and well location selection, and it also provides guidance for further exploration.
- northwestern margin of Junggar Basin /
- thrust\strike-slip /
- structural evolution /
- physical simulation

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图 1 准噶尔盆地西北缘构造背景及断裂分布

Figure 1. Structural setting and faults distribution of the northwestern margin in Junggar Basin

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图 2 准噶尔西北缘Kb201301二维测线地震解释

K₁tg－吐谷鲁群组；J₁b－八道湾组；T₁b－百口泉组；P₂w－下乌尔禾组；P₂x－夏子街组；P₁f－风城组；P₁j－佳木河组；C－石炭系

Figure 2. Seismic interpretation of the Line Kb201301 in the northwestern margin of Junggar Basin

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图 3 Kb201301测线构造演化剖面

Figure 3. The structural evolution section of the Line Kb201301

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图 4 SG-2000实验装置示意图

Figure 4. SG-2000 experimental facility sketch

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图 5 物理实验模拟平面、剖面断裂照片

Figure 5. The plane and profile photos of physics experiment

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图 6 冲断-走滑演化模拟阶段概念图

Figure 6. The concept map of thrust\strike-slip-fault evolution

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表 1 物理实验模拟记录表

Table 1. Record table of physical experiment

编号	载荷	位移速度	位移变化(与原点距离)	现象
1	-	-	-	石英砂与彩砂平整铺放且分层明显
2	横向：0.5 MPa	横向：18 mm/min	横向挤压：10 mm	平面上有推覆体并形成推覆断层F1；剖面上红蓝层发育滑脱褶皱，粉色层断层f1断距2 mm
2	纵向：-	纵向：-	纵向剪切：-	平面上有推覆体并形成推覆断层F1；剖面上红蓝层发育滑脱褶皱，粉色层断层f1断距2 mm
3	横向：0.5MPa	横向：18 mm/min	横向挤压：20 mm	平面推覆距离延伸更长更明显；剖面上滑脱褶皱曲率变大，f1断距增加到5 mm
3	纵向：-	纵向：-	纵向剪切：-	平面推覆距离延伸更长更明显；剖面上滑脱褶皱曲率变大，f1断距增加到5 mm
4	横向：0.5 MPa	横向：18 mm/min	横向挤压：30 mm	平面上发育第二阶推覆断层F2；剖面上f1断距7 mm，f2断距2 mm
4	纵向：-	纵向：-	纵向剪切：-	平面上发育第二阶推覆断层F2；剖面上f1断距7 mm，f2断距2 mm
5	横向：0.5 MPa	横向：18 mm/min	横向挤压：60 mm	平面上发育第三阶推覆断层F3；剖面上f1断距11 mm，f2断距8 mm，f3断距5 mm
5	纵向：-	纵向：-	纵向剪切：-	平面上发育第三阶推覆断层F3；剖面上f1断距11 mm，f2断距8 mm，f3断距5 mm
6	横向：0.5 MPa	横向：18 mm/min	横向挤压：80 mm	平面上发育第四阶推覆断层F4；剖面上f1断距11 mm，f2断距8 mm，f3断距5 mm，f4断距16 mm
6	纵向：-	纵向：-	纵向剪切：-	平面上发育第四阶推覆断层F4；剖面上f1断距11 mm，f2断距8 mm，f3断距5 mm，f4断距16 mm
7	横向：0.3 MPa	横向：10 mm/min	横向挤压：85 mm	平面上发育与主剪切面呈30°的次级剪切面1条，呈近90°的次级断层两条且延伸较远；剖面上在推覆断层f3曲率最大点派生出高角度断层f′3
7	纵向：2.5 MPa	纵向：100 mm/min	纵向剪切：100 mm
8	横向：0.3 MPa	横向：10 mm/min	横向挤压：90 mm	平面上次级剪切裂缝增加；剖面上推覆断层f1、f2曲率最大点派生出高角度断层f′1和f′2
8	纵向：2.5 MPa	纵向：100 mm/min	纵向剪切：200 mm	平面上次级剪切裂缝增加；剖面上推覆断层f1、f2曲率最大点派生出高角度断层f′1和f′2
9	横向：0.3 MPa	横向：10 mm/min	横向挤压：95 mm	平面上剪切断层增加，与主剪切面呈90°的剪切面尤其明显；剖面上派生的f′断层切穿上覆推覆断层，呈现独立花状分支
9	纵向：2.5 MPa	纵向：100 mm/min	纵向剪切：300 mm	平面上剪切断层增加，与主剪切面呈90°的剪切面尤其明显；剖面上派生的f′断层切穿上覆推覆断层，呈现独立花状分支

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