[1]范 超,邹 帅,唐大卿,等.内蒙古根河盆地断裂构造特征及演化[J].复杂油气藏,2020,13(04):1-7.[doi:10.16181/j.cnki.fzyqc.2020.04.001]
 FAN Chao,ZOU Shuai,TANG Daqing,et al.Features and evolution of fault structures in Genhe Basin,Inner Mongolia.[J].Complex Hydrocarbon Reservoirs,2020,13(04):1-7.[doi:10.16181/j.cnki.fzyqc.2020.04.001]
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内蒙古根河盆地断裂构造特征及演化()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
13卷
期数:
2020年04期
页码:
1-7
栏目:
油气勘探
出版日期:
2020-12-25

文章信息/Info

Title:
Features and evolution of fault structures in Genhe Basin,Inner Mongolia.
作者:
范 超1邹 帅1唐大卿12谢 强1杨 敏1
1.中国地质大学(武汉)资源学院石油地质系,湖北 武汉430074;2.构造与油气资源教育部重点实验室,湖北 武汉430074
Author(s):
FAN Chao1ZOU Shuai1TANG Daqing12XIE Qiang1YANG Min1
1. Faculty of Resources, China University of Geosciences, Wuhan 430074, China;2. Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, Wuhan 430074, China
关键词:
断裂构造火山活动构造演化构造类型断裂演化根河盆地
Keywords:
fault structure volcanic activitytectonic evolution Genhe Basin
分类号:
TE122
DOI:
10.16181/j.cnki.fzyqc.2020.04.001
文献标志码:
A
摘要:
根河盆地是位于内蒙古-大兴安岭褶皱系内的中新生代断坳盆地,主要发育侏罗纪、白垩纪和新近纪地层。野外地质调查揭示,根河盆地断裂构造比较发育,断裂构造类型以伸展性质的犁状正断层为主,此外在盆地西北侧还发育了少量挤压性质的逆断层和多期应力作用形成的反转断层。断裂走向主要为北东向和北西向,北东向断裂控制盆地发育,北西向断裂发育较晚并切割北东向断层。综合盆地断裂构造特征及区域地质背景分析认为,晚古生代根河盆地形成拼合基底,中-晚侏罗世时期根河盆地开始接受沉积。早白垩世时期,火山活动加强,盆地形成火山岩盖层,早白垩世晚期盆地沉积火山碎屑岩。早白垩世之后,盆地抬升接受剥蚀,盆地内未发现晚白垩世地层。进入新生代,喜山运动开始,盆地处于拉张状态,接受新近系沉积的同时盆地内形成大量玄武岩。喜山运动之后,盆地终止沉降。
Abstract:
The Genhe Basin is a Mesozoic-Cenozoic faulted basin located in the inner Mongolia-Great Khingan fold system.It mainly developed Jurassic,Cretaceous and Neogene strata.Field geological surveys reveal that the Genhe Basin has relatively developed fault structures.The type of fault structure is dominated by extensional plow-shaped normal faults.In addition,a small number of compressional reverse faults and inversion faults formed by multi-stage stress have also developed on the northwest side of the basin.The fault strikes are mainly northeast and northwest.The northeast fault controls the development of the basin,and the northwest fault develops later and cuts the northeast fault.Based on the analysis of basin fault structure characteristics and regional geological background, it is concluded that the Genhe Basin formed a combined basement in the late Paleozoic, and the Genhe Basin began to accept sedimentation during the middle-late Jurassic.During the early Cretaceous period,volcanic activity strengthened and the basin formed volcanic caprocks.In the late early Cretaceous period,volcanic clastic rocks were deposited in the basin.After the early Cretaceous, the basin was uplifted and eroded, and no late Cretaceous strata were found in the basin.Entering the Cenozoic, the Himalayan movement began, and the basin was in a state of tension. A large amount of basalt was formed in the basin while accepting Neogene deposits.After the Himalayas, the basin stopped subsiding.

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备注/Memo

备注/Memo:
收稿日期:2019-12-26;改回日期:2020-07-14。
第一作者简介:范超(1990—),硕士,从事含油气盆地构造学研究。E-mail:fanchao1990@126.com。
基金项目:中国地质调查局项目(编号:1212011220756)资助。
更新日期/Last Update: 2020-12-31