西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 83-88.

• 地质勘探 • 上一篇    下一篇

塔里木盆地早中寒武世张裂构造及沉积响应

高志前1 樊太亮1 尹微2 张晓龙3 王恩辉4
  

  1. 1.“海相储层演化与油气富集机理”教育部重点实验室_ 中国地质大学,北京海淀100083;
    2. 中国石油勘探开发研究院中亚俄罗斯研究所,北京海淀100083;
    3. 中国石油冀东油田分公司研究院,河北唐山063004;
    4. 中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-06-20 发布日期:2011-06-20

Extensional Tectonic Characteristics and its Sedimentary Response of Early-Middle Cambrian in Tarim Basin

GAO Zhi-qian 1 FAN Tai-liang 1 YIN Wei 2 ZHANG Xiao-long 3 WANG En-hui 4
  

  1. 1. MOE Key Laboratory of Marine Evolution and Hydrocardon Accumulation Mechanism, China University of Geosciences, Haidian, Beijing 100083, China;
    2. Research center of Mid-asia and Russia, Research Institute of Petroleum Exploration and Development, Haidian, Beijing 100083, China;
    3. Engineering and Technology Research Institute, Jidong Oilfield Company, PetroChina, Tangshan, Hebei 063004, China;
    4. Research Institute of Exploration and Development, Liaohe Oilfield Company, CNPC, Panjin, Liaoning 124010, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

摘要: 塔里木盆地塔中、巴楚地区中下寒武统发育半地堑和正断裂,说明早中寒武世塔里木盆地为张裂构造环境;半地堑在平面上呈带状分布,纵向发育具有继承性;正断层的平面组合形态呈侧列式和雁列式,断层断距自西向东逐渐增大。张裂构造是离散大陆边缘形成时强烈拉张作用的产物,半地堑的形成与塔西南被动大陆边缘和塔东克拉通边缘拗陷的形成有关,受盆地东北缘三叉裂谷系发育的影响更为明显。断裂体系控制着盆地的沉积格局和充填演化,盆地整体呈现台地相—斜坡相—半深海盆地相的沉积格局,而半地堑的走向呈NW—SE 向,与隐伏基底断裂走向一致,其沉积模式为灰岩—云岩—膏岩—盐岩—红层沉积。

关键词:

被动大陆边缘, 张裂构造, 半地堑, 沉积格局, 塔里木盆地

Abstract: The half grabens and normal faults develop in the Lower-Middle Cambrian of Tazhong(central Tarim Basin)and Bachu area, Tarim Basin, which indicates that Tarim Basin may be of extensional tectonic setting during the Early-Middle Cambrian. The half grabens are distributed within a linear zone laterally and show vertical

succession, while the normal faults are arranged in echelon patterns and the fault throw increases gradually from west to east. Such extensional tectonics may be the result of intense stretch in connection with the formation of discrete continents. The formation of half grabens, associated with the formation of passive continental margin in the southwest and cratonic marginal depression in the east, especially is notably influenced by the development of trigeminal rift on the northeast margin of Tarim Basin. The fault system controls the sedimentary filling evolution
and framework which exhibits platform-slope-bathyal facies. The half grabens trend NW-SE, consistent with buried basement fault, and the lithology is limestone-dolomite-gypsum rock-saline rock-red layer sediments.

Key words:

passive continental margin, extensional tectonics, half graben, sedimentary framework, Tarim Basin

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