塔里木盆地巴楚隆起卡拉沙依断层差异构造变形特征及其控制因素
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摘要
根据最新的地震资料,运用断层相关褶皱理论和平衡剖面技术,对巴楚隆起中部卡拉沙依断层的差异变形特征进行了分析。卡拉沙依断层是巴楚隆起内部的多期活动断层,经历了加里东早期、加里东中期Ⅰ幕、海西晚期和喜马拉雅早期等关键变形期。平面上卡拉沙依断层表现为2条规模不同的断层自南西向北东呈剪刀式会聚,剖面内卡拉沙依断层表现为由沿寒武系滑脱的坡坪式盲冲断层和基底卷入式高角度逆冲断层共同组成。含膏盐岩层系控制了卡拉沙依断层的分层变形特征,基底先存构造的差异性控制了卡拉沙依断层的分段变形特征,区域构造应力场转换控制了卡拉沙依断层的分期差异变形特征。
Based on latest seismic interpretation data,the features of differential deformation of the Kalashayi Fault in the central Bachu Uplift were analyzed by means of fault-related fold theory and balanced section technique.The Kalashayi Fault is an active fault of multiple stages in the Bachu Uplift.It has suffered several stages of deformation,such as the early Caledonian,the episode Ⅰ of the middle Caledonian,the late Hercynian and the early Himalayan.On the plane,two faults of different scales converge like scissors from SW to NE.In profile,the Kalashayi Fault is composed of ramp-flat blind thrust fault which slips in Cambrian and high-angle basement-involved thrust fault.Gypsum-salt rocks control the multi-level deformation features of the Kalashayi Fault.The difference of pre-structure in basement leads to the segmental deformation features.Regional stress field transition results in the poly-phase deformation features.
Based on latest seismic interpretation data,the features of differential deformation of the Kalashayi Fault in the central Bachu Uplift were analyzed by means of fault-related fold theory and balanced section technique.The Kalashayi Fault is an active fault of multiple stages in the Bachu Uplift.It has suffered several stages of deformation,such as the early Caledonian,the episode Ⅰ of the middle Caledonian,the late Hercynian and the early Himalayan.On the plane,two faults of different scales converge like scissors from SW to NE.In profile,the Kalashayi Fault is composed of ramp-flat blind thrust fault which slips in Cambrian and high-angle basement-involved thrust fault.Gypsum-salt rocks control the multi-level deformation features of the Kalashayi Fault.The difference of pre-structure in basement leads to the segmental deformation features.Regional stress field transition results in the poly-phase deformation features.
引文
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[21]孟庆强,朱东亚,谢启来,等.塔中和巴楚地区深部流体活动控制因素及有利区预测[J].石油实验地质,2011,33(6):597-606.
[2]贾承造,魏国齐.塔里木盆地构造特征与含油气性[J].科学通报,2002,47(增刊):1-8.
[3]何文渊,李江海,钱祥麟,等.塔里木盆地巴楚断隆中新生代的构造演化[J].北京大学学报:自然科学版,2000,36(4):539-546.
[4]林畅松,杨海军,刘景彦,等.塔里木盆地古生代中央隆起带古构造地貌及其对沉积相发育分布的制约[J].中国科学:D辑:地球科学,2009,39(3):306-316.
[5]顾忆,邵志兵,赵明,等.塔里木盆地巴楚隆起油气保存条件与勘探方向[J].石油实验地质,2011,33(1):50-55.
[6]吴礼明,丁文龙,赵松,等.塔里木盆地巴楚—麦盖提地区古构造研究[J].断块油气田,2012,19(1):6-11.
[7]杨明慧,金之钧,吕修祥,等.塔里木盆地基底卷入扭压构造与巴楚隆起的形成[J].地质学报,2007,81(2):158-165.
[8]朱德丰,刘和甫,吴根耀.塔里木盆地西部吐木休克断裂带的主要特征和构造演化[J].地质科学,2008,43(2):209-227.
[9]王宏语,樊太亮,魏福军,等.塔里木盆地巴楚中部地区寒武系盐下构造发育特征[J].石油与天然气地质,2004,25(5):554-557.
[10]张洪安,吴根耀,李曰俊,等.塔里木盆地西部巴楚断隆南界断裂带的主要特征和构造演化[J].地质通报,2011,30(10):1547-1556.
[11]任建业,张俊霞,杨怀忠,等.塔里木盆地中央隆起带断裂系统分析[J].岩石学报,2011,27(1):219-230.
[12]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:地球科学,2003,33(1):38-46.
[13]Konstantinovskaya E,Malavieille J.Thrust wedges with décollementlevels and syntectonic erosion:A view from analog models[J].Tectonophysics,2011,502(1):336-350.
[14]Fagereng A.Wedge geometry,mechanical strength,and inter-seismic coupling of the Hikurangi subduction thrust,New Zea-land[J].Tectonophysics,2011,507(1/2):26-30.
[15]Mitra S.Fold-accommodation faults[J].AAPG Bulletin,2002,86(4):271-693.
[16]Higgins S,Davies R J,Clarke B.Antithetic fault Linkages in a deep water fold and thrust belt[J].Journal of Structural Geo-logy,2007,29(12):1900-1914.
[17]Kostenko O V,Naruk S J,Hack W,et al.Structural evaluation of column-height controls at a toe-thrust discovery,deep-water Niger Delta[J].AAPG Bulletin,2008,92(12):1615-1638.
[18]Reiter K,Kukowski N,Ratschbacher L.The interaction of twoindenters in analogue experiments and implications for curved fold-and-thrust belt[J].Earth and Planetary Science Letters,2011,302(1/2):132-146.
[19]李乐,侯贵廷,潘文庆,等.塔里木盆地巴楚地区二叠纪以来构造应力场解析[J].地质力学学报,2011,17(3):262-273.
[20]陈咪咪,田伟,张自力,等.塔里木盆地二叠纪基性—中性—酸性岩浆岩的年代学及其地质意义[J].岩石学报,2010,26(2):559-572.
[21]孟庆强,朱东亚,谢启来,等.塔中和巴楚地区深部流体活动控制因素及有利区预测[J].石油实验地质,2011,33(6):597-606.
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