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塔里木盆地中北部断裂体系划分及形成机制探讨
  • ISSN号:1001-6112
  • 期刊名称:《石油实验地质》
  • 时间:0
  • 分类:TE121.2[石油与天然气工程—油气勘探]
  • 作者机构:[1]西南石油大学地球科学与技术学院,成都610500, [2]中国石化西北油田分公司勘探开发研究院,乌鲁木齐830011
  • 相关基金:国家重点基础研究发展计划“973计划”项目(2012CB214800)和国家科技重大专项(2011ZX05005-004)资助
中文摘要:

:基于地震地质解释,刻画了塔里木盆地中北部断裂体系的平、剖面特征,分析了不同断裂体系的结构模式、形成机制及演化历史.结果表明,该区分为4个断裂体系:(1)托普台“X”型走滑断裂体系,下古生界主要发育NNE、NNW向“X”型共轭剪切破裂及“1”字形直立构造、正花状构造,而中新生界多表现为NNE向雁列式张性正断裂及负花状、堑垒构造;(2)塔中NW向逆冲断裂体系,以近NW向基底卷入式或滑脱式逆冲断裂为主,发育“y”字形构造;(3)顺托NE向走滑断裂体系,奥陶系及以下层系表现为近NE向左旋走滑及“1”字形直立、正花状构造,而志留-泥盆系主要发育近NE向雁列式张性正断裂及负花状、堑垒构造;(4)塔河盐下“T”型断裂体系,下古生界层系由近EW向逆冲断裂与近SN、NNE向走滑断裂组成,中新生界层系主要发育NEE向、近SN向雁列式张性正断裂组.断裂体系的研究明确了研究区压扭走滑和张扭走滑作用的叠加改造过程,认为主要受控于盆缘古洋盆5期的消减闭合及碰撞造山作用.结合研究区构造动力学背景分析,将该区断裂体系的演化过程划分为中晚奥陶世的强挤压弱走滑期、晚志留-中泥盆世的强挤压强走滑期、晚石炭-早中二叠世的强拉张弱走滑期、晚二叠世-三叠纪的强挤压弱走滑期和侏罗纪-新近纪的弱挤压弱走滑期.

英文摘要:

This paper described the horizontal and vertical characteristics of fault systems in the central and northern Tarim Basin, and analyzed the structural model, formation mechanism and evolution history of the fault systems based on extensive 2D/3D seismic data. Four series of fault systems were preliminarily classified. (1) The "X"-type strike-slip fault system (Ⅰ1) in the Tuoputai area is composed of nearly NNE, NNW trending "X"-style conjugate shear fractures and "1"-style vertical structures and positive flower structures in the Lower Paleozoic strata, and are composed of NNE trending en-echelon extension fractures and negative flower structures and graben-horst structures in the Mesozoic and Cenozoic strata. (2) The NW trending thrust fault system (Ⅰ2) in the central Tarim area is composed of nearly NW trending basement-involved and cover-slipping thrust faults and "Y"-style structures. (3) The NE trending strike-slip fault system (Ⅰ3) in the Shuntuo area is composed of nearly NE trending left-lateral strike-slip faults and "1"-style vertical structures and positive flower structures in the Ordovician and lower strata, and is composed of ENE trending en-echelon extensional fractures and negative flower structures and graben-horst structures in the Silurian-Devonian strata. (4) The "T"-type fault system (Ⅰ4) in the Tahe subsalt area is composed of nearly EW trending thrust faults and nearly NS, NNE trending strike-slip faults in the Lower Paleozoic strata, and is composed of NNE,nearly SN trending en-echelon extensional fractures in the Mesozoic and Cenozoic strata. The study of fault system illustrated the superimposition and transformation between extensional strike-slip and transtensional strike-slip, and considered that it was mainly controlled by five stages of subduction and collision orogeny in the paleo oceanic basin on the basin margin. Combined with the dynamic evolution mechanism of the study area, the evolution stage of the central and n

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期刊信息
  • 《石油实验地质》
  • 中国科技核心期刊
  • 主管单位:中国石油化工集团公司
  • 主办单位:中国石油化工股份有限公司石油勘探开发研究院 中国地质学会石油地质专业委员会
  • 主编:叶德燎
  • 地址:江苏无锡滨湖区蠡湖大道2060号
  • 邮编:214151
  • 邮箱:sysydz@mail.wuxisuo.com
  • 电话:0510-68787204
  • 国际标准刊号:ISSN:1001-6112
  • 国内统一刊号:ISSN:32-1151/TE
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),美国石油文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版)
  • 被引量:15906