塔里木盆地西北缘柯坪冲断带的构造变形特征
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摘要
柯坪冲断带位于塔里木盆地的西北缘,是南天山南缘冲断系统的一部分。根据野外实际考察和地震剖面解释,总结了该冲断带的构造变形特征:发育于古生界、以寒武系膏盐层为主滑脱层、叠瓦状冲断、暴露式冲断前锋、断层传播褶皱、前展式冲断、形成于上新世—第四纪。根据平衡剖面的恢复,柯坪冲断带的构造缩短量最小为29.1%~40.7%。
The Kalpin thrust belt,located at the NW margin of the Tarim basin,is a part of the southern South Tianshan marginal thrust system.On the basis of field investigation and seismic section interpretation,the Kalpin thrust belt has the following structural deformation characteristics: the thrust belt occurs in Paleozoic strata;the major detachment fault occurs in a Middle Cambrian gypsum-salt layer;the thrust sheets are imbricate;various thrust fronts are subaerially exposed;fault propagation folding and piggyback thrusting are found;and the thrust belt formed during the Pliocene-Holocene.According to the reconstructed balanced section,the minimal shortening rate of the thrust belt is 29.1%—40.7%.
引文
[1]蔡东升,卢华复,贾东,等.塔里木盆地西北缘柯坪造山带变形分析[C]//童晓光,梁狄刚,贾承造.塔里木石油地质研究新进展.北京:科学出版社,1996:131~138.
    [2]肖安成,杨树锋,李曰俊,等.塔里木盆地巴楚隆起断裂系统主要形成时代的新认识[J].地质科学,2002,40(2):291~302.
    [3]周新源,李曰俊,王招明,等.塔里木盆地西北缘乌什南上奥陶统—下志留统沉积构造背景初探[J].地质科学,2002,(增刊):57~63.
    [4]李曰俊,刘胜,买光荣,等.塔里木盆地西部柯坪与巴楚断隆构造关系的研究[C]//王福同.第三届天山地质矿产资源学术讨论会论文集.乌鲁木齐:新疆人民出版社,2000:23~26.
    [5]张师本,高琴琴.塔里木盆地震旦纪-二叠纪地层古生物(Ⅱ),柯坪、巴楚分册[M].北京:石油工业出版社,1991.
    [6]李国雄,王正元,潘国恩.新疆柯坪地区晚震旦世至早二叠世沉积相[M].北京:地质出版社,1992.
    [7]Li Yuejun,Wang Zhaoming,Wu Haoruo,Huang Zhibin,Tan Zejin,Luo Juncheng.New discovery of radiolarian fossils from AktikGroup in Southern Tianshan[J].Acta Geologica Sinica,2002,76(2):146~154.
    [8]Nishidai T.,et al.Structures and hydrocarbon potential of Tarim Basin(NW China)from satellite imagery[J].Journal ofPetroleum Geology,1990,13:35~58.

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