石油与天然气地质 ›› 1993, Vol. 14 ›› Issue (3): 181-190.doi: 10.11743/ogg19930302

• 论文 • 上一篇    下一篇

酒西盆地南缘推覆构造及其含油领域

黄华芳, 郑国东, 方国庆, 夏艳青   

  1. 中国科学院兰州地质研究所 730000
  • 收稿日期:1993-01-12 出版日期:1993-09-25 发布日期:2012-01-16
  • 基金资助:

    甘肃省中青年自然科学基金

NAPPE STRUCTURES IN SOUTH MARGIN OF JIUXI BASIN AND ITS OIL-BEARING AREAS

Huang Huafang, Zheng Guodong, Fang Guoqing, Xia Yanqing   

  1. Lanzhou Institute of Geology, Chinese Academy of Science
  • Received:1993-01-12 Online:1993-09-25 Published:2012-01-16

PDF (PC)

409

被引次数

48

摘要：

酒西盆地南缘的冲断-褶皱型推覆构造带规模巨大,包括以古生界为主体的冲断推覆体和以中新生界为主体的褶皱推覆体。古地磁及地质构造研究结果表明,自二叠纪以来推覆距离达200km,其中侏罗纪后推覆100km 左右。推覆构造对酒西盆地范围、基底形态、沉积物类型、有机质演化及油气赋存条件等均有明显控制作用。

关键词: 酒西盆地, 推覆构造, 古地磁, 盆地演化, 含油领域

Abstract:

The typical thrust-fold nappe structural belt occurred in the south margin of Jiuxi Basin is broad in scale,very complicated in structure and the evolution process is tortu-ous.The structures include thrust nappe which is mainly composed of Paleozoic Erathem and the fold nappe that is mainly made up of Meso-Cenozoic.The rule of its tectonic transports and emplacements is frontal imbrication. Based on the paleomagnetic and geological structure data of the structural belt,the belt has become a part of North China Plate since the beginning of Devonian,and it con-nected with Tarim Plate along Altun Fracture after Permian.The napping distance of the nappe structural belt has reached more than 200 km since Permian,of which about 100 kmwas done after Jurassic.In the course of its formation and development,the belt underwent NE-SW direc-tional tension from Z to O2,NE-SW directional compression from O3 to P,counterclock-wise rotation from T to J,and near SN directional compression after J.The nappe belt has controlled the range,basement shape,type of deposits and condi-tions for organic matter evolution and hydrocarbon preservation of the basin.Hydrocar-bon exploration areas thus can not be restricted in the front part of the nappe belt,but should also further extend into its inner part so as to discover oil pools in the nappe andthe overriding belt;hydrocarbon resources could not noly be found in Jurassic-Cretaceous Systems,but also in Permo-Carboniferous sediments.