天然气地质学

伊宁凹陷构造沉降史与主控因素分析

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  • 1.中国石化河南油田分公司博士后工作站,河南 南阳 473000;
    2.中国科学院油气资源研究重点实验室,甘肃 兰州 730000;
    3.中国石化河南油田勘探技术与开发研究院,河南 郑州450016
祝建军(1985-),男,山东济宁人,博士后,主要从事石油地质学、构造地质学研究.E-mail:zhujianjun831211@163.com.

收稿日期: 2013-11-22

  修回日期: 2014-01-08

  网络出版日期: 2014-08-10

基金资助

中国科学院西部行动计划项目(编号:KZCX2-XB3-12);中国科学院“西部之光”人才培养计划西部博士资助项目(编号:Y304RC1WGC)联合资助.
 

Tectonic Subsidence of Yining Depression and Its Main Controlling Factors
 
 

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  • 1.Postdoctoral Research institute Henan Oilfield Company Sinopec,Nanyang 473000,China;
    2.Key Laboratory of Petroleum Resources Research,Institute of Geology and Geophysics,Chinese Academy ofSciences,Lanzhou 730000,
    China;3.Reasearch institute Exploration and Development Henan Oilfield Company,SINOPEC,Zhengzhou 450016,China

Received date: 2013-11-22

  Revised date: 2014-01-08

  Online published: 2014-08-10

摘要

利用伊宁凹陷多口钻/测井、模拟井及地震数据估算了侏罗纪末期地层剥蚀量,且在充分考虑多种因素基础上,应用回剥技术模拟分析了该区中二叠世以来构造沉降史。研究表明,伊宁凹陷中二叠世以来主要经历了3次快速沉降、2次缓慢沉降与2次区域性快速抬升剥蚀的过程。其中,中二叠世—早三叠世为最大构造沉降期,沉降中心位于中央凹陷带霍城地区,海西期火山裂谷后热沉降作用是造成此次沉降的直接因素;早侏罗世与新近纪以后沉降次之,构造运动形成的差异性升降规律是这2次快速沉降的主要成因;侏罗纪末期—白垩纪早期为主要剥蚀抬升期,伊宁凹陷西部剥蚀强度远远大于东部地区,具有明显的东西差异性。
 

本文引用格式

祝建军,林水清,张红军,张高源,应文玺,顾超,王琪 . 伊宁凹陷构造沉降史与主控因素分析[J]. 天然气地球科学, 2014 , 25(8) : 1181 -1187 . DOI: 10.11764/j.issn.1672-1926.2014.08.1181

Abstract

The Late Jurassic stratigraphic erosion has been estimated according to the data of several drilling wells,simulation wells and seismic data in the Yining Sag.The results show that the structure history of Yining Depression contains three rapid subsidence periods,two slow subsidence periods and two regional rapid uplifting periods since the Middle Permian.The largest subsidence time was in the Middle Permian-Early Triassic Period which was caused by thermal subsidence after Hercynian Volcanic Rifts and the subsidence center was located in Huocheng area of central depression.Rapid subsidence period in Early Jurassic and after Nelgene was less significant,different lifting regularity which was caused by tectonic movement is the main reason for these two rapid subsidence periods.With an obvious east-west difference,Late Jurassic-Early Cretaceous was the major uplift and erosion period,and the eroded intensity of west is much greater than that in the eastern region.
 

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