塔里木盆地库车坳陷北部边缘构造特征
|
摘要
塔里木盆地库车坳陷北部边缘与南天山过渡带结构复杂,是了解塔里木盆地-南天山盆山关系的关键。利用2D、3D地震资料和钻井资料,分析塔里木盆地库车坳陷北部边缘的结构特征、构造样式,对比研究不同区段变形的差异和影响构造样式的主要因素。研究结果表明:①根据基底断裂的发育情况,库车坳陷北部边缘自北向南可划分为三区五带,自浅至深可划分为4个变形层。其中,山前克拉苏构造带以克拉苏断裂为界可细化为高角度基底卷入变形区、低角度基底卷入变形区和盖层滑脱变形区。②库车坳陷盆山过渡带主要发育收缩构造、盐构造和走滑构造,根据其表现形式可划分为15种样式。③库车坳陷北部克拉苏构造带可划分为6个主要的构造段,受先存基底断裂、膏盐岩分布和南天山差异推覆作用的影响,各构造段表现出差异变形的特征。④现今构造主要形成于新生代中晚期,经历了晚二叠世—三叠纪古前陆盆地、侏罗纪—白垩纪坳陷盆地、古近纪—中新世弱收缩挠曲盆地和上新世—第四纪陆内前陆盆地4个演化阶段。
The transition zone between Kuqa depression and South Tianshan uplift located in northern Tarim basin has complex structural system.This area is the key to understand the relationship between mountains and basins.Based on the newly-obtained 2D,3D seismic and drilling data,the authors studied the basin structure,structural styles and deformations in various segments.Some conclusions have been reached:①The transition belt between Kuqa depression and southern Tianshan uplift can be divided into five belts and three districts from north to south and four layers in vertical direction.The Kelasu belt can be divided into three deformation zones,i.e.,high angle basement involvement zone,low angle basement involvement zone and cover rock decollement zone.②The transition belt mainly formed three styles of structures,namely contraction structural style,salt structural style and strike-slip style.③Kelasu belt can be divided into six segments form east to west with each segment having its own deformation style.④The present structure feature was mainly formed in Late Cenozoic.The structural evolution stage can be divided into four stages,i.e.,Late Permian-Triassic paleo foreland basin,Jurassic-Cretaceous depressive basin,Paleogene-Miocene weak contraction flexure basin and Pliocene-Quaternary intra-continent foreland basin.Pre-existent structure,salt flow and various thrusting nappes constituted main factors responsible for differential deformation.
The transition zone between Kuqa depression and South Tianshan uplift located in northern Tarim basin has complex structural system.This area is the key to understand the relationship between mountains and basins.Based on the newly-obtained 2D,3D seismic and drilling data,the authors studied the basin structure,structural styles and deformations in various segments.Some conclusions have been reached:①The transition belt between Kuqa depression and southern Tianshan uplift can be divided into five belts and three districts from north to south and four layers in vertical direction.The Kelasu belt can be divided into three deformation zones,i.e.,high angle basement involvement zone,low angle basement involvement zone and cover rock decollement zone.②The transition belt mainly formed three styles of structures,namely contraction structural style,salt structural style and strike-slip style.③Kelasu belt can be divided into six segments form east to west with each segment having its own deformation style.④The present structure feature was mainly formed in Late Cenozoic.The structural evolution stage can be divided into four stages,i.e.,Late Permian-Triassic paleo foreland basin,Jurassic-Cretaceous depressive basin,Paleogene-Miocene weak contraction flexure basin and Pliocene-Quaternary intra-continent foreland basin.Pre-existent structure,salt flow and various thrusting nappes constituted main factors responsible for differential deformation.
引文
[1]漆家福,雷刚林,李明刚,等.库车坳陷-南天山盆山过渡带的收缩构造变形模式[J].地学前缘,2009,16(3):120-128.
[2]雷刚林,谢会文,张敬洲,等.库车坳陷克拉苏构造带构造特征及天然气勘探[J].石油与天然气地质,2007,28(6):816-820.
[3]何登发,周新源,杨海军,等.库车坳陷的地质结构及其对大油气田的控制作用[J].大地构造与成矿学,2009,33(1):19-32.
[4]周新源,王清华,肖中尧.新疆南天山山前地区中生界成藏条件及勘探潜力[J].地质科学,2004,39(4):463-474.
[5]李曰俊,杨海军,赵岩,等.南天山区域大地构造与演化[J].大地构造与成矿学,2009,33(1):94-104.
[6]陈书平,汤良杰,贾承造,等.库车坳陷西段盐构造及其与油气的关系[J].石油学报,2004,25(1):30-34.
[7]黄少英,王月然,魏红兴.塔里木盆地库车坳陷盐构造特征及形成演化[J].大地构造与成矿学,2009,33(1):117-123.
[8]邬光辉,刘玉魁,罗俊成,等.库车坳陷盐构造特征及其对油气成藏的作用[J].地球学报,2003,24(3):249-253.
[9]卢华复,贾承造,贾东,等.库车再生前陆盆地冲断构造楔特征[J].高校地质学报,2001,7(3):257-271.
[10]邬光辉,罗春树,胡太平,等.褶皱相关断层——以库车坳陷新生界盐上构造层为例[J].地质科学,2007,42(3):496-505.
[11]漆家福,雷刚林,李明刚,等.库车坳陷克拉苏构造带的结构模型及其形成机制[J].大地构造与成矿学,2009,33(1):49-56.
[12]刘志宏,卢华复,贾承造,等.库车再生前陆盆地的构造与油气[J].石油与天然气地质,2001,22(4):297-303.
[13]汤良杰,贾承造,皮学军,等.库车前陆褶皱带盐相关构造样式[J].中国科学(D辑),2003,33(1):38-46.
[14]汤良杰,李京昌,余一欣,等.库车前陆褶皱-冲断带盐构造差异变形和分段性特征探讨[J].地质学报,2006,80(3):313-320.
[15]戈红星,Vendeville Bruno C,Jackson Martin P A.厚皮拉伸盐构造运动中上覆层构造影响因素分析[J].石油学报,2003,27(5):26-31.
[16]余一欣,汤良杰,杨文静,等.库车前陆褶皱-冲断带前缘盐构造分段差异变形特征[J].地质学报,2007,81(2):166-173.
[17]田作基,胡见义.塔里木库车前陆盆地构造格架和含油气系统[J].新疆石油地质,2000,21(5):379-383.
[18]赵孟军,卢双舫.库车坳陷两期成藏及其对油气分布的影响[J].石油学报,2003,24(5):16-20.
[2]雷刚林,谢会文,张敬洲,等.库车坳陷克拉苏构造带构造特征及天然气勘探[J].石油与天然气地质,2007,28(6):816-820.
[3]何登发,周新源,杨海军,等.库车坳陷的地质结构及其对大油气田的控制作用[J].大地构造与成矿学,2009,33(1):19-32.
[4]周新源,王清华,肖中尧.新疆南天山山前地区中生界成藏条件及勘探潜力[J].地质科学,2004,39(4):463-474.
[5]李曰俊,杨海军,赵岩,等.南天山区域大地构造与演化[J].大地构造与成矿学,2009,33(1):94-104.
[6]陈书平,汤良杰,贾承造,等.库车坳陷西段盐构造及其与油气的关系[J].石油学报,2004,25(1):30-34.
[7]黄少英,王月然,魏红兴.塔里木盆地库车坳陷盐构造特征及形成演化[J].大地构造与成矿学,2009,33(1):117-123.
[8]邬光辉,刘玉魁,罗俊成,等.库车坳陷盐构造特征及其对油气成藏的作用[J].地球学报,2003,24(3):249-253.
[9]卢华复,贾承造,贾东,等.库车再生前陆盆地冲断构造楔特征[J].高校地质学报,2001,7(3):257-271.
[10]邬光辉,罗春树,胡太平,等.褶皱相关断层——以库车坳陷新生界盐上构造层为例[J].地质科学,2007,42(3):496-505.
[11]漆家福,雷刚林,李明刚,等.库车坳陷克拉苏构造带的结构模型及其形成机制[J].大地构造与成矿学,2009,33(1):49-56.
[12]刘志宏,卢华复,贾承造,等.库车再生前陆盆地的构造与油气[J].石油与天然气地质,2001,22(4):297-303.
[13]汤良杰,贾承造,皮学军,等.库车前陆褶皱带盐相关构造样式[J].中国科学(D辑),2003,33(1):38-46.
[14]汤良杰,李京昌,余一欣,等.库车前陆褶皱-冲断带盐构造差异变形和分段性特征探讨[J].地质学报,2006,80(3):313-320.
[15]戈红星,Vendeville Bruno C,Jackson Martin P A.厚皮拉伸盐构造运动中上覆层构造影响因素分析[J].石油学报,2003,27(5):26-31.
[16]余一欣,汤良杰,杨文静,等.库车前陆褶皱-冲断带前缘盐构造分段差异变形特征[J].地质学报,2007,81(2):166-173.
[17]田作基,胡见义.塔里木库车前陆盆地构造格架和含油气系统[J].新疆石油地质,2000,21(5):379-383.
[18]赵孟军,卢双舫.库车坳陷两期成藏及其对油气分布的影响[J].石油学报,2003,24(5):16-20.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心