| 塔里木盆地北缘库车前陆褶皱──冲断构造分析 |
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| 引用本文： | 贾东,卢华复.塔里木盆地北缘库车前陆褶皱──冲断构造分析[J].大地构造与成矿学,1997,21(1):1-8. |
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| 作者姓名： | 贾东 卢华复 |
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| 作者单位： | 南京大学地球科学系 |
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| 摘 要： | 库车前陆褶皱－冲断带是以断坪－断坡式的台阶状逆断层作为滑动机制的盖层薄皮推覆构造，它们在剖面上形成一个向南变薄尖灭的推覆构造楔，底部沿脱面在北侧深南侧浅，推覆变形也是自北向南传递。依据其构造形态和变形特点可分为五个构造亚带：（1）南天山前缘楔状构造带；（2）库姆格列木－依奇克里克断层扩展褶皱构造带：（3）吐格尔明－吉迪克断层弯曲褶皱构造带：（4）秋里塔格断层扩展褶皱与断层弯曲褶皱叠加构造带；（5）库车－亚肯生长断层弯曲褶皱构造带。
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| 关 键 词： | 库车前陆褶皱─冲断带 断层扩展褶皱 断层弯曲褶皱 |
STRUCTURAL ANALYSES OF KUQA FORELAND FOLD-THRUST BELT ALONG THE NORTHERN MARGIN OF TARIM BASIN |
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| Abstract: | The Kuqa foreland fold-thrust belt displays the thin-skin nappe structures in the cover strata, which are characterized by the flat-ramp and step reversal faults. The nappe structures show a thinned southwards tectonic wedge in cross-sections, which detachment surface is shallowed from north to south and the nappe deformation has been propagated towards the south. Based on structural styles and deformation features, the Kuqa fold-thrust belt can be divided into five structure sub-belts; (1) South Tianshan frontal wedge sub-belt, (2) Ku mugelinemu-Yiqikelike fault-propagation fold sub-belt, (3) Tugerming-Jidike fault-bend fold sub-belt, (4) Qiulitage fault-propagation fold and fault-bend fold superimposed structure sub-belt, (5) Kuqa-Yaken growth fault-bend fold sub-belt. |
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| Keywords: | Kuqa foreland fold-thrust belt fault-propagation fold faultubend fold |
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