塔里木盆地塔中隆起中北部地区断裂构造特征及演化

姜忠正; 唐大卿; 沙旭光; 沈向存; 罗少辉; 董科良; 古再丽努尔·艾尔肯; 王玮龙; 伍亮

doi:10.19509/j.cnki.dzkq.tb20220663

塔里木盆地塔中隆起中北部地区断裂构造特征及演化

doi: 10.19509/j.cnki.dzkq.tb20220663

1.
中国石化西北油田分公司勘探开发研究院, 乌鲁木齐 830011
2a.
中国地质大学(武汉) 资源学院, 武汉 430074
2b.
中国地质大学(武汉) 构造与油气资源教育部重点实验室, 武汉 430074

基金项目:

中国石化科技项目 P22126

国家重点基础研究发展计划(973)项目 2012CB214804

详细信息

作者简介:
姜忠正, E-mail: 182351295@qq.com

通讯作者:
唐大卿, E-mail: tangdqcug@sina.com

中图分类号: P542.3
计量
- 文章访问数: 128
- PDF下载量: 20
- 被引次数: 0
出版历程
- 收稿日期: 2022-11-28
- 录用日期: 2023-07-17
- 修回日期: 2023-07-15

Structure and evolution of faults in central and northern parts of Tazhong Uplift, Tarim Basin

1.
Exploration and Development Research Institute, Northwest Oilfield Branch, SINOPEC, Urumqi 830011, China
2a.
School of Earth Resources, China University of Geosciences(Wuhan), Wuhan 430074, China
2b.
Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences(Wuhan), Wuhan 430074, China

More Information

Author Bio:
JIANG Zhongzheng, E-mail: 182351295@qq.com

Corresponding author: TANG Daqing, E-mail: tangdqcug@sina.com

摘要

摘要:
为系统揭示塔里木盆地塔中隆起中北部地区断裂构造特征及其成因演化, 通过对该区大连片三维地震工区精细构造解析和相干体等分析, 并结合区域动力背景, 系统论述了该区的断裂构造类型、几何学特征、差异活动机制及其构造演化过程。研究结果表明, 塔中隆起中北部发育了4类7期断裂构造, 其中逆冲断裂和走滑断裂尤其发育。平面上北西向弧形逆冲断裂与北东向、北西向及南北向走滑断裂相互交切与耦合; 垂向上断裂分层差异活动特征明显, 下奥陶统及其以下地层, 断裂发育数量多且以线形为主, 中奥陶统-中下泥盆统多呈雁列式, 上泥盆统-二叠系仅在塔中Ⅱ号断裂带、顺北5号断裂带西南端等地区发育少量断裂。研究区断裂活动受多期、多方向不同性质应力场所控制, 经历了极其复杂的演化历史: 加里东早期以塔中Ⅱ号断裂带等少量北倾正断层活动为主; 加里东中期Ⅰ幕断裂活动强烈, 表现为逆冲断裂与走滑断裂协同演化和相互耦合特征, 走滑断裂对逆冲断裂的切割或限制作用明显; 加里东中期Ⅲ幕断裂活动基本继承了加里东中期Ⅰ幕的构造格局, 但在工区北部的顺北4号、5号等断裂带张扭性断裂活动特征显著; 加里东晚期-海西早期, 部分断裂发生继承性活动且张扭断裂发育范围进一步向南扩大; 印支-燕山期, 仅有少数断裂发生继承性活动; 喜山期该区构造比较稳定, 早期形成的复杂断裂构造进入深埋阶段。
- 逆冲断裂 /
- 走滑断裂 /
- 张扭性断裂 /
- 构造特征及演化 /
- 塔中隆起中北部 /
- 塔里木盆地
Abstract: Objective
To reveal the structures and evolutionary patterns of faults in the central and northern parts of Tazhong Uplift, Tarim Basin,
Methods
this paper systematically discusses the types of fault structures, geometric characteristics, differential activity mechanisms, and tectonic evolution processes in this area by analysing detailed structural interpretations and coherent slices of combined large 3D seismic data along with the regional dynamic background.
Results
The results show that there are 4 types and 7 evolution stages of faults in the central and northern parts of Tazhong Uplift, among which thrust faults and strike-slip faults are particularly common. On the plane, NW arc thrust faults intersect with NE-, NW- and NS-striking strike-slip faults; vertically, the fault stratification and differential activity characteristics are obvious. In the Lower Ordovician and the belowing layers, faults developed in large numbers and were mainly linear in their trending directions. As for the Middle Ordovician-Middle and Lower Devonian layers, faults are mostly in the echelon type. In the Upper Devonian-Permian layers, a few faults developed in the Tazhong Ⅱ fault zone and the southwestern end of the Shunbei 5 fault zone.
Conclusion
The fault activity in the study area was controlled by stress sites exhibiting diverse properties across multiple phases and directions and experienced an extremely complex evolutionary history: In the Early Caledonian period, a small number of normal faults, such as the Tazhong Ⅱ fault zone, were mainly active; in the Middle Caledonian Ⅰ period, the fault activity was very strong and was characterized by coevolution and mutual coupling of thrust faults and strike-slip faults. The strike-slip faults obviously cut or restricted the thrust faults. The fault activity of the Middle Caledonian Ⅲ period basically inherited the tectonic framework of the Middle Caledonian Ⅰ period, but the characteristics of transtensional fault activity in the Shunbei 4 and 5 fault zones are significant. From the Late Caledonian to Early Hercynian, some of the faults inherited activities with obvious transtensional characteristics. Conversely, in the Indochina-Yanshan period, only a few faults inherited activity, and the development area of transtensinal fault is further expanded to the south. During the Himalayan period, the tectonic movement of this area was relatively stable, and the complex fault structures that formed in the early stage transitioned into the deep burial stage.
- thrust fault /
- strike-slip fault /
- transtensional fault /
- structure and evolution /
- central and northern parts of the Tazhong Uplift /
- Tarim Basin
注释:

所有作者声明不存在利益冲突。

The authors declare that no competing interests exist.

HTML全文

图 1 塔中隆起中北部地区构造位置及研究工区分布图

Figure 1. Structural location in central and northern parts of Tazhong Uplift and distribution map of the research work area

下载: 全尺寸图片幻灯片

图 2 塔中隆起中北部典型断裂构造特征地震剖面图(剖面、断裂带位置及编号见图 1，下同)

T.三叠系；D₃-P.上泥盆统-二叠系；S-D_1-2.志留系-中、下泥盆统；O₂.上奥陶统；O_1-2.中、下奥陶统；∈₃.上寒武统；∈₂.中寒武统；∈₁.下寒武统；∈_1-2.中、下寒武统

Figure 2. Seismic section of typical fault structures in central and northern parts of Tazhong Uplift

下载: 全尺寸图片幻灯片

图 3 塔中隆起中北部地区主要地震反射界面相干切片(a, c, e, g)与断裂体系(b, d, f, h)对比图

Figure 3. Comparison maps of coherent slices and faults systems of main surfaces in central and northern part of Tazhong Uplift

下载: 全尺寸图片幻灯片

图 4 塔中隆起中北部地区断裂构造剖面组合特征图

Figure 4. Combination characteristics of the fault structure section in central and northern part of Tazhong Uplift

下载: 全尺寸图片幻灯片

图 5 塔中隆起典型构造演化剖面图(Trace8308测线)

K.白垩系；T.三叠系；D₃-P.上泥盆统-二叠系；S-D_1-2.志留系-中、下泥盆统；O₃.上奥陶统；O_1-2.中、下奥陶统；∈₃.上寒武统；∈_1-2.中、下寒武统

Figure 5. Typical structural evolution profile of Tazhong Uplift

下载: 全尺寸图片幻灯片

图 6 塔中隆起中北部地区断裂发育模式图

F为构造应力; C, E分别为F水平和垂直方向分解力

Figure 6. Development models of faults in central and northern parts of Tazhong Uplift

下载: 全尺寸图片幻灯片

表 1 塔里木盆地塔中隆起区地层格架(据文献[1]修改)

Table 1. Brief of the stratigraphic framework in Tazhong Uplift area, Tarim Basin

表 2 塔中隆起中北部地区断裂分期活动特征

Table 2. Characteristics of the fault stages and activities in central and northern parts of Tazhong Uplift

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