黄骅盆地南部前第三系基底中的逆冲构造

漆家福; 杨池银

黄骅盆地南部前第三系基底中的逆冲构造

漆家福¹,
杨池银²

1.
教育部石油天然气成藏机理重点实验室, 北京 102249
2.
中国石油大港油田公司地质勘探与开发研究院, 天津 300280

基金项目:

国家“973”项目 G1999043303

详细信息

作者简介:
漆家福(1957-), 男, 教授、博士生导师, 主要从事油区构造解析、沉积盆地分析等方面的研究

中图分类号: P541
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出版历程
- 收稿日期: 2002-02-05
- 刊出日期: 2003-01-25

Thrust Structure Developed in Pre-Tertiary Basement in South Area of Huanghua Basin

QI Jia-fu¹,
YANG Chi-yin²

1.
Key Laboratory for Hydrocarbon Accumulation, Ministry of Education, Beijing 102249, China
2.
Research Center of Geological Exploration and Development, Dagang oilfield Corporation of Petrochina, Tianjin 300280, China

摘要

摘要: 黄骅盆地南部前第三系构造层中广泛发育有逆冲构造.其中西部的逆冲构造带以逆冲堆叠背形构造和逆冲叠瓦扇构造为主, 中部以楔冲双重构造和低角度盲冲或顺层滑脱构造为主, 东部以高角度板状逆冲叠瓦构造为主.这些逆冲构造带都表现为由SE向NW-MNW方向的逆冲, 而且由构造样式推测的拆离滑脱深度是由西向东逐渐加深, 表明在深层可能有一条向南东倾斜的拆离断层将它们连锁在一起, 构成统一的逆冲构造系统.从卷入逆冲构造的地层的地质时代推测, 逆冲构造主要是在早—中三叠世盆地发育之后、侏罗—白垩纪盆地形成之前形成的, 并在早—中侏罗世盆地发育过程中又有进一步活动.逆冲构造形成后又受到中—新生代时期的伸展构造和走滑构造的叠加和改造.控制黄骅盆地老第三纪伸展盆地的形成和演化的沧东断层的某些地段, 在前第三纪时期曾经是一条逆冲断层.
- 逆冲构造 /
- 构造样式 /
- 前第三系 /
- 黄骅盆地
Abstract: Thrust structure widely developed in pre-Tertiary basement in south area of Huanghua basin. There are 6 structural styles in section which includes (1) snakehead and imbricate fan, (2) stack antiform, (3) duplex, (4) blind thrust in low angle or interbeds, (5) triangle zone and (6) high-angle thrust-domino. In the plane view, there are almost 5 parallel thrust zones striking in NE-NNE. The names are given respectively by (1) Cangdong thrust zone, (2) Kongxi thrust zone, (3) Wumaying thrust zone (4) Xuhei thrust zone and Chenxi thrust zone from west to east. In the west part, the thrust structure dominates the styles of snakehead, imbricate fan and stack antiform. In the middle part, the thrust structure dominates the styles of duplex, blind thrust in low angle or interbeds and pop-up and triangle zone. In the east part, the thrust structure dominates the styles of thrust-domino. Most of the thrust faults are dip to SEE (southeast-east) and the structural styles show the detachment of the thrust faults become deeper toward southeast. Possibly, all of the thrusts linked a large-scale thrust system whose direction is from SE-SEE to NW-NWW. The strata involved the thrust system mainly include Paleaozoic group and Lower-Middle Triassic but some leading thrusts have put in the Jurassic. We confer the thrust system was formed before Jurassic and after Triassic, and progressive thrust happened during Early-Middle Jurassic. The thrust system superposed extensional and right-lateral strike-slip tectonics during Cenozoic. Some sections of Cangdong fault which was controlling the formation of Huanghua basin during Tertiary were thrust faults during pre-Tertiary.
- thrust structure /
- structural style /
- pre-Tertiary /
- Huanghua basin

HTML全文

图 1 黄骅盆地南部前第三系中的逆冲构造的分布

1.逆冲断层, 黑三角表示断层倾向; 2.下第三系盆地构造单元界线; 3.剖面线位置; 4.逆冲构造(带)编号: ①沧东逆冲断层(东光段); ②沧东逆冲断层(孔西段); ③乌马营逆冲构造带; ④孔西逆冲构造带; ⑤徐黑逆冲构造带(南段); ⑥徐黑逆冲构造带(北段); ⑦埕西逆冲构造带(南段); ⑧埕西逆冲构造带(北段); ⑨千米桥逆冲构造带

Fig. 1. Skeleton map of thrust structures in the pre-tertiary, south of Huanghua basin

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图 2 黄骅盆地逆冲构造剖面样式模型

a.蛇头构造和逆冲叠瓦扇构造; b.双重构造; c.逆冲堆叠背形构造; d.楔冲双重构造或逆冲三角构造; e.低角度盲冲构造和顺层滑脱构造; f.高角度板状逆冲叠瓦构造

Fig. 2. Models for sectional styles of thrust structures in Huanghua basin

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图 3 沧东逆冲断层和孔西逆冲构造带剖面

剖面位置见图 1, 图中地层代号: Ed.下第三系东营组; Es.下第三系沙河街组; Ek.下第三系孔店组; J-K.侏罗系和白垩系未分; P.二叠系; C.石炭系; O.奥陶系; ∈.寒武系; A-A′剖面据孔西三维33455剖面解释, B-B′剖面据孔西三维31775剖面解释

Fig. 3. Sections of Cangdong thrust and Kongxi thrust zone

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图 4 乌马营构造带剖面地质解释

剖面位置见图 1, C-C′剖面据乌马营三维地震CROSSLINE325测线剖面解释, D-D′剖面据重新处理的K85-73测线地震剖面解释, 细虚线表示标志性同相轴, 地层代号同图 2注解, 标注AT的断层为新生代右旋走滑断层

Fig. 4. Seismic interpretation section for Wumaying fault zone

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图 5 徐黑凸起上的逆冲构造剖面

剖面位置见图 1, E-E′剖面据Y85-120测线地震剖面解释, F-F′剖面据Y85-70测线地震剖面解释, 地层代号同图 2注解, 标注AT的断层为新生代右旋走滑断层

Fig. 5. Sections of thrust structures across Xuhei high

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图 6 千米桥构造带剖面地质解释图

剖面位置见图 1, G-G′剖面据千米桥三维地震INLINE341测线剖面解释, 地层代号同图 2注解

Fig. 6. Seismic interpretation section for Qianmiqiao fault zone

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参考文献(6)

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