塔里木盆地西部喀什地区新生代褶皱冲断带构造解析
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摘要
基于纵贯喀什地区4条地震剖面的精细构造解析,建立了喀什地区新生代褶皱冲断带的构造地质模型,认为该区新生代晚期不仅受南天山造山带南冲挤压的控制,也受到来自西昆仑的北冲推覆作用的影响,从而将喀什地区的冲断构造划分为北部的"南天山前陆冲断系统"(西段可称"阿图什前陆褶皱冲断带")和南部的"西昆仑前陆冲断系统"两部分。通过平衡恢复技术,定量计算了这两部分的最小水平构造缩短量分别为43.7 km和4 km,剖面总的缩短率为50%。综合构造演化序列和保存条件分析,认为北部深层成藏条件较好,优质储层是否发育是钻探成功的关键因素。
Based on accurate structural analysis of four seismic profiles across Kashi area in western Tarim Basin,a tectonic model for Cenozoic fold-and-thrust belts in the area was established.The area was controlled by southward thrusting of the Chinese South Tianshan in Late Cenozoic,in addition,the area was influenced by northward thrusting of the West Kunlun mountains.Namely,the Cenozoic fold-and-thrust zone there could be divided into two parts: the northern part attached to the foreland thrusting system of the Chinese South Tianshan,and the southern one to the foreland thrusting system of the West Kunlun mountains.The former was named the Artux foreland fold-and-thrust belt in the paper,which was composed of three rows of main thrusts and related anticlines,and their evolutional process was briefly discussed.By technique of balanced section,the structural shortening was calculated,which was more than 43.7 km in the northern part and 4 km in the southern part respectively,with a total shortening ratio of the profile being fifty percent.To synthesize regional tectonic evolution and reservation conditions,it was thought that the relatively better potentials might be deeper layers in the northern part(the Artux fold-and-thrust belt),and the key factor for oil-gas exploration should be good-quality reservoirs there.
Based on accurate structural analysis of four seismic profiles across Kashi area in western Tarim Basin,a tectonic model for Cenozoic fold-and-thrust belts in the area was established.The area was controlled by southward thrusting of the Chinese South Tianshan in Late Cenozoic,in addition,the area was influenced by northward thrusting of the West Kunlun mountains.Namely,the Cenozoic fold-and-thrust zone there could be divided into two parts: the northern part attached to the foreland thrusting system of the Chinese South Tianshan,and the southern one to the foreland thrusting system of the West Kunlun mountains.The former was named the Artux foreland fold-and-thrust belt in the paper,which was composed of three rows of main thrusts and related anticlines,and their evolutional process was briefly discussed.By technique of balanced section,the structural shortening was calculated,which was more than 43.7 km in the northern part and 4 km in the southern part respectively,with a total shortening ratio of the profile being fifty percent.To synthesize regional tectonic evolution and reservation conditions,it was thought that the relatively better potentials might be deeper layers in the northern part(the Artux fold-and-thrust belt),and the key factor for oil-gas exploration should be good-quality reservoirs there.
引文
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杨海军,李曰俊,冯晓军,郑民,张春莲,赵岩.2007.塔里木盆地玛扎塔格构造带断裂构造分析.地质科学,42(3):506—517.Yang Haijun,Li Yuejun,Feng Xiaojun,Zheng Min,Zhang Chunlian and Zhao Yan.2007.Analysis on thrustings of theMazhatage structural belt in the Tarim Basin.Chinese Jour.Geol.,42(3):506—517.
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赵孟军,王招明,宋岩,张水昌,肖中尧,王清华,秦胜飞.2005.塔里木盆地喀什凹陷油气来源及其成藏过程.石油勘探与开发,32(2):50—54.Zhao Mengjun,Wang Zhaoming,Song Yan,Zhang Shuichang,Xiao Zhongyao,Wang Qinghua and Qin Shengfei.2005.Source and accumulation of oil and gas in Kashi Sag,Tarim Basin,NW China.Petroleum Exploration and Develop-ment,32(2):50—54.
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周新源,王清华,肖中尧.2004.新疆南天山山前地区中生界成藏条件及勘探潜力.地质科学,39(4):463—474.Zhou Xinyuan,Wang Qinghua and Xiao Zhongyao.2004.Accumulation conditions and potentials of the Mesozoic in areasouth of the Nan-Tianshan mountains,Xinjiang.Chinese Jour.Geol.,39(4):463—474.
Burtman VS.2000.Cenozoic crustal shortening between the Pamir and Tien Shan and a reconstruction of the Pamir-Tien Shantransition zone for the Cretaceous and Palaeogene.Tectonophysics,319:69—92.
Chen J,Burbank D W,Scharer K M,Sobel E,Yin Jinhui,Rubin C and Zhao Ruibin.2002.Magnetochronology of the Up-per Cenozoic strata in the southwestern Chinese Tian Shan:Rates of Pleistocene folding and thrusting.Earth Planet.Sci.Lett.,195:113—130.
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何光玉,赵庆,李树新,雷刚林,齐英敏,谢会文.2006.塔里木库车盆地中生代原型分析.地质科学,41(1):44—53.He Guangyu,Zhao Qing,Li Shuxin,Lei Ganglin,Qi Yingmin and Xie Huiwen.2006.Analysis on Mesozoic prototypes of theKuqa Basin in Tarim,northwestern Xinjiang.Chinese Jour.Geol.,41(1):44—53.
金小赤,王军,陈炳蔚,任留东.2001.新生代西昆仑隆升的地层学和沉积学记录.地质学报,75(4):459—467.Jin Xiaochi,Wang Jun,Chen Bingwei and Ren Liudong.2001.Stratigraphic and sedimentologic records of the uplifting of theWest Kunlun in the Cenozoic.Acta Geologica Sinica,75(4):459—467.
刘胜,邱斌,陈新安,李勇,赵卫东,张现军,郑亚芳.2006.塔里木盆地西端中生界沉积环境与油气地质特征.新疆石油地质,27(1):10—14.Liu Sheng,Qiu Bin,Chen Xin an,Li Yong,Zhao Weidong,Zhang Xianjun and Zhen Yafang.2006.Sedimentary setting ofMesozoic and its petroleum geologic features in western Tarim Basin.Xinjiang Petroleum Geology,27(1):10—14.
罗金海,周新源,邱斌,杨芝林,尹宏,尚新璐.2004.塔里木盆地西部喀什凹陷褶皱冲断带的构造特征.石油与天然气地质,25(2):199—203.Luo Jinhai,Zhou Xinyuan,Qiu Bin,Yang Zhilin,Yin Hong and Shang Xinlu.2004.Structural features of fold-thrust zone inKashi depression,western Tarim basin.Oil&Gas Geology,25(2):199—203.
苗继军,贾承造,王招明,齐英敏,张君峰,赵恩宏.2005.塔里木盆地北部库车地区秋里塔格构造带地层结构及其对构造变形的制约.地质科学,40(4):558—569.Miao Jijun,Jia Chengzao,Wang Zhaoming,Qi Yingmin,Zhang Junfeng and Zhao Enhong.2005.Stratigraphic configurationcontrol on tectonic deformation along the Qiultag anticline belt of Kuqa area,northern tarim Basin.Chinese Jour.Ge-ol.,40(4):558—569.
钱玲,卢玉红,黄龙藏,胡文革,张秋茶,汪海,何芬贤.2007.塔里木盆地喀什凹陷克拉托天然气来源分析及聚气特征.地质科学,42(2):243—266.Qian Ling,Lu Yuhong,Huang Longcang,Hu Wenge,Zhang Qiucha,Wang Hai and He Fenxian.2007.Source and gather-ing features of Kelatuo natural gas in the Kashi Sag,Tarim Basin.Chinese Jour.Geol.,42(2):243—266.
尚新璐,陈新卫,吴超,罗金海.2004.塔里木盆地西部喀什地区的新生代冲断构造.地质科学,39(4):543—550.Shang Xinlu,Chen Xinwei,Wu Chao and Luo Jinhai.2004.Cenozoic thrust structures in the Kashi area,western Tarim Ba-sin.Chinese Jour.Geol.,39(4):543—550.
孙龙德,周新源,王国林.2005.塔里木盆地石油地质研究新进展和油气勘探主攻方向.地质科学,40(2):167—178.Sun Longde,Zhou Xinyuan and Wang Guolin.2005.Contributions of petroleum geology and main directions of oil-gas explo-ration in the Tarim Basin.Chinese Jour.Geol.,40(2):167—178.
王招明,赵孟军,张水昌,宋岩,肖中尧,王清华,秦胜飞.2005.塔里木盆地西部阿克莫木气田形成初探.地质科学,40(2):237—247.Wang Zhaoming,Zhao Mengjun,Zhang Shuichang,Song Yan,Xiao Zhaongyao,Wang Qinghua and Qin Shengfei.2005.Apreliminary study on formation of Akemo gas field in the Kashi Sag,TarimBasin.Chinese Jour.Geol.,40(2):237—247.
魏伟,杨海军,杨芝林,李剑,张志国.2006.塔里木盆地喀什凹陷北部油砂分布特征.中国石油勘探,(3):76—78.Wei Wei1,Yang Haijun,Yang Zhilin,Li Jian and Zhang Zhiguo.2006.Distribution characteristics of oilsand in northernKashi Sag,Tarim Basin.China Petrleum Exploration,(3):76—78.
伍秀芳,刘胜,汪新,杨树锋,顾雪梅.2004.帕米尔—西昆仑北麓新生代前陆褶皱冲断带构造剖面分析.地质科学,39(2):260—271.Wu Xiufang,Liu Sheng,Wang Xin,Yang Shufeng and Gu Xuemei.2004.Analysis on structural sections in the CenozoicPamir-western Kunlun foreland fold-and-thrust belt.Chinese Jour.Geol.,39(2):260—271.
吴超,尚新璐,陈军,王晓云.2004.新疆西部苏盖特构造带构造特征及勘探前景.地质科学,39(4):571—578.Wu Chao,Shang Xinlu,Chen Jun and Wang Xiaoyun.2004.Tectonic features and potentials of the Sugaite structural belt inWest Xinjiang.Chinese Jour.Geol.,39(4):571—578.
肖安成,贾承造,杨树锋,魏国齐,陈汉林,张春生.2000.中国南天山西部冲断褶皱系前缘区的运动学特征.沉积学报,18(3):439—444.Xiao Ancheng,Jia Chengzao,Yang Shufeng,Wei Guoqi,Chen Hanlin and Zhang Chunsheng.2000.The Kinematics charac-ters of the thrust-fold belts western front regions in southern Tianshan,China.Acta Sedimentologica Sinica,18(3):439—444.
杨海军,李曰俊,冯晓军,郑民,张春莲,赵岩.2007.塔里木盆地玛扎塔格构造带断裂构造分析.地质科学,42(3):506—517.Yang Haijun,Li Yuejun,Feng Xiaojun,Zheng Min,Zhang Chunlian and Zhao Yan.2007.Analysis on thrustings of theMazhatage structural belt in the Tarim Basin.Chinese Jour.Geol.,42(3):506—517.
张君峰,王东良,王招明,李欣,苏雪峰.2005.喀什凹陷阿克莫木气田天然气成藏地球化学.天然气地球科学,16(4):507—512.Zhang Junfeng,Wang Dongliang,Wang Zhaoming,Li Xin and Su Xuefeng.2005.Natural gas deposit formation geochemistryof Akmomu gas field,Kashi sag in Tarim basin.Natural Gas Earth Science,16(4):507—512.
赵孟军,王招明,宋岩,张水昌,肖中尧,王清华,秦胜飞.2005.塔里木盆地喀什凹陷油气来源及其成藏过程.石油勘探与开发,32(2):50—54.Zhao Mengjun,Wang Zhaoming,Song Yan,Zhang Shuichang,Xiao Zhongyao,Wang Qinghua and Qin Shengfei.2005.Source and accumulation of oil and gas in Kashi Sag,Tarim Basin,NW China.Petroleum Exploration and Develop-ment,32(2):50—54.
赵孟军,宋岩,秦胜飞,柳少波,洪峰,傅国有,达江.2007.中国中-西部4种新生代挤压盆地成藏地质条件及成藏期次,地质科学,42(2):234—252.Zhao Mengjun,Song Yan,Qin Shengfei,Liu Shaobo,Hong Feng,Fu Guoyou and Da Jiang.2007.Geological conditions andoil-gas filling periods of4 type Cenozoic compressional basins in central-western China.Chinese Jour.Geol.,42(2):234—252.
周新源,王清华,肖中尧.2004.新疆南天山山前地区中生界成藏条件及勘探潜力.地质科学,39(4):463—474.Zhou Xinyuan,Wang Qinghua and Xiao Zhongyao.2004.Accumulation conditions and potentials of the Mesozoic in areasouth of the Nan-Tianshan mountains,Xinjiang.Chinese Jour.Geol.,39(4):463—474.
Burtman VS.2000.Cenozoic crustal shortening between the Pamir and Tien Shan and a reconstruction of the Pamir-Tien Shantransition zone for the Cretaceous and Palaeogene.Tectonophysics,319:69—92.
Chen J,Burbank D W,Scharer K M,Sobel E,Yin Jinhui,Rubin C and Zhao Ruibin.2002.Magnetochronology of the Up-per Cenozoic strata in the southwestern Chinese Tian Shan:Rates of Pleistocene folding and thrusting.Earth Planet.Sci.Lett.,195:113—130.
Medwedeff D A and Suppe J.1997.Multibend fault-bend folding.Jour.Struct.Geol.,19(3—4):279—292.
Midland Valley Exploration Ltd.2003.2DMoveV4 2003 Tutorial.Glasgow:Midland Valley Exploration Ltd.1—190.
Poblet J,McClay K,Storti F and Munoz J A.1997.Geometries of syntectonic sediments associated with single-layer detach-ment folds.Jour.Struct.Geol.,19(3—4):369—381.
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