首页|塔里木盆地东北缘吐格尔明背斜和阳北断裂带构造分析

塔里木盆地东北缘吐格尔明背斜和阳北断裂带构造分析

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  • 国家科技期刊平台
  • NETL
  • NSTL
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吐格尔明背斜和阳北断裂位于塔里木盆地北缘,南天山山前库车褶皱冲断带的东段,两者均为基底卷入型构造.阳北断裂是一个反转构造,其变形历史可以追溯到侏罗纪—白垩纪的正断层;新生代构造反转,发生了多期冲断变形加速期,分别发生于白垩纪末—古近纪初、古近纪末—新近纪初、中新世早期、上新世和第四纪.吐格尔明背斜构造带是阳北断裂中新世早期及以后的冲断作用派生出来的一个次级基底卷入型构造变形带.它由吐格尔明背斜及其南、北两条呈背冲关系的逆冲断层组成.背斜核部元古宇变质岩出露地表;中、新生界直接不整合于变质岩之上,缺失全部古生界,说明研究区可能属于一个长期存在的古生代古隆起.
Structural analysis of the Tugalming anticline and Yangbei fault in the northeastern margin of Tarim Basin,NW China
The Tugalming anticline and Yangbei fault are located in the northern margin of the Tarim Basin and the eastern part of the Kuqa fold thrust belt in front of the South Tianshan Mountains.Both of them are basement-involved structures.Yangbei fault is an inverted structure.Its deformation history can be traced back to the Jurassic-Cretaceous normal faulting.The Cenozoic tectonic inversion and accelerated thrust deformation occurred at the end of Cretaceous to the beginning of Paleogene,the end of Paleogene to the beginning of Neogene,the Early Miocene,Pliocene and Quaternary.The Tugalming anticlinal structural belt is a secondary basement involved structural belt derived from the Early Miocene and later thrusts of the Yangbei fault.It is composed of the Tugalming anticline and the two thrust faults in its north and south.Proterozoic metamorphic rocks in the anticlinal core are exposed.The Meso-Cenozoic is directly unconformably overlying on the metamorphic rocks,and the whole Paleozoic is missing,which indicates that the study area may belong to a long-term Paleozoic paleouplift.

Jurassic-Cretaceous normal faultCenozoic thrustInverted tectonicsBasement-involved structureProterozoic metamorphic rocksPaleo-upliftTugalming anticlineYangbei faultEastern segment of Kuqa fold-thrust beltTarim Basin

蒋俊、缪卫东、赵凤全、李君、袁瑞、周慧、邓晓睿、王珊、董才源、黄智斌、师斌、汲雷昌

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中国石油天然气股份有限公司塔里木油田 新疆库尔勒 841000

中国石油天然气股份有限公司勘探开发研究院 北京 100083

科新石油技术服务有限责任公司 新疆库尔勒 841000

侏罗—白垩纪正断层 新生代逆冲断层 反转构造 基底卷入构造 元古宇变质岩 古隆起 吐格尔明背斜 阳北断裂 库车褶皱冲断带东段 塔里木盆地

中国石油前瞻性基础性技术攻关项目(十四五)

2021DJ0605

2024

10.12017/dzkx.2024.020

地质科学
中国科学院地质与地球物理研究所

地质科学

CSTPCD北大核心
影响因子：0.79
ISSN：0563-5020
年,卷(期)：2024.59(2)
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