郯庐断裂带渤海段与沂沭断裂带衔接关系

徐盛林; 张交东; 周新桂; 丁伟翠; 李冰; 毕彩芹; 王玉芳; 任凤楼; 黄松; 胡卫剑

郯庐断裂带渤海段与沂沭断裂带衔接关系

徐盛林^{1, 2,},
张交东^2, ,,
周新桂³,
丁伟翠²,
李冰²,
毕彩芹³,
王玉芳³,
任凤楼⁴,
黄松⁵,
胡卫剑⁵

1.
中国地质大学, 北京 100083
2.
中国地质科学院, 北京 100037
3.
中国地质调查局油气资源调查中心, 北京 100029
4.
中国石化胜利油田地质科学研究院, 山东东营 257015
5.
中国科学院地质与地球物理研究所, 北京 100029

基金项目:

国家自然科学基金面上项目 D0206-41372123

全国油气资源战略选区调查与评价项目 1211301208023-2

详细信息

作者简介:
徐盛林(1991-),男,硕士研究生,构造地质学专业。E-mail:xushenglindizhi@163.com

通讯作者:
张交东(1968-),男,教授级高级工程师,博士,主要从事深部地质和地球物理综合研究。E-mail:dzyzjd@163.com

中图分类号: P548
计量
- 文章访问数: 176
- HTML全文浏览量: 137
- PDF下载量: 25
- 被引次数: 0
出版历程
- 收稿日期: 2015-10-17
- 刊出日期: 2016-03-28

RELATIONSHIP BETWEEN BOHAI SEGMENT OF TANLU FAULT ZONE AND YISHU FAULT ZONE

1.
China University of Geosciences, Beijing 100083, China
2.
Chinese Academy of Geological Sciences, Beijing 100037, China
3.
Oil & Gas Survey, China Geology Survey, Beijing 100029, China
4.
Geological Scientific Research Institute SINOPEC Shengli Oilfield Company, Dongying 257015, China
5.
Institute of Geology and Geophysics, Chinese Academy of Sciences, Bejing 100029, China

摘要

摘要: 以郯庐断裂带渤海段和沂沭断裂带的衔接点潍北凹陷为切入点,依据高精度大地电磁和地震剖面,解析了潍北凹陷的多条断裂,并结合地层发育等特征,研究渤海段中生代断裂活动及其与沂沭断裂带的构造关系。研究认为这些断裂可能属于不同的断裂体系。在潍北凹陷解析出的郯西(Fa)和郯东(Fb)两条断裂为古近纪正断裂系,呈现上陡下缓的勺状形态,消失在中地壳,切割部位较浅,主要控制新生界沉积。新生代正断裂系下部发育有6条显著的中生代断裂(F1—F6),为中生代伸展断裂系,其中东(F6)、西(F1)两条断裂的断裂面整体近直立,切穿深部的下地壳,并向下继续延伸,与中间4条断裂共同控制中生界沉积。结合区域地质背景和重磁延拓等资料,推断其向南分别与沂沭断裂带西支鄌郚—葛沟断裂和东支昌邑—大店断裂相衔接,向北伸入渤海湾盆地深部,并对浅部古近纪正断裂系的形成演化具有明显的约束作用。
- 郯庐断裂带渤海段 /
- 沂沭断裂带 /
- 中生代 /
- 断裂体系 /
- 构造关系
Abstract: Based on the high-precision magnetotelluric and seismic profiles, we analyzed several fractures of Weibei hollow which was the connection point of Bohai segment Fault and Yishu Fault Belt. Furthermore, integrated with stratum forming characters, we found these fractures might belong to different fault systems. We analyzed that the fault Fa and Fb were Paleogene normal faults corresponded with the west fault and east fault of the Tan-Lu fault zone. They showed steep or gentle spoon shaped morphology and disappeared in the middle crust. They controlled Cenozoic sedimentation and the cutting site was relatively shallow. Under the Cenozoic normal fault system, there were some Mesozoic faults which was called extensional fault system. The fault F1 and F6 whose fracture surface were overall suberect control Mesozoic sedimentation with other four faults. And their cutting site was relatively deep and extending downward. Integrated with regional tectonic background and Gravity-Magnetic anomaly data, we concluded that the fault F1 and F6 connected southward with Tangwu-Gegou fault and Changyi-Dadian fault and extended northward into the deep part of Bohai Bay Basin. At the same time, these Mesozoic faults constrained clearly the formation and evolution of the shallow Paleogene fault system.
- Bohai segment of Tanlu fault zone /
- Yishu fault zone /
- Mesozoic /
- fault system /
- tectonic relationship

HTML全文

图 1 郯庐断裂带渤海段及沂沭断裂带地质图(据文献[1~2, 11]修改)

Figure 1. A geological map showing the Bohai segment fault and Yishu fault zone

下载: 全尺寸图片幻灯片

图 2 郯庐断裂带渤海段地质-地球物理综合剖面图

a—反射地震剖面; b—大地电磁剖面; c—深部地质结构

Figure 2. Geological-geophysical profiles of the Bohai segment fault

下载: 全尺寸图片幻灯片

图 3 沂沭断裂带中段地质剖面图(据国家地震地质研究所，1987)

Figure 3. Geological profile of the middle Yishu fault belt

下载: 全尺寸图片幻灯片

图 4 郯庐断裂带渤海段南段上延10 km重力异常图

Figure 4. The map of gravity anomaly extension 10 km of the south Bohai segment fault

下载: 全尺寸图片幻灯片

图 5 郯庐断裂带渤海段航磁异常图

Figure 5. Aeromagnetic anomaly map of the Bohai segment fault

下载: 全尺寸图片幻灯片

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