| 焉耆盆地博湖坳陷形成过程及动力学机制 |
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| 引用本文： | 蔡佳,王华,赵忠新,陈少平,杨道庆,林社卿.焉耆盆地博湖坳陷形成过程及动力学机制[J].地球科学,2008,33(4). |
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| 作者姓名： | 蔡佳 王华 赵忠新 陈少平 杨道庆 林社卿 |
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| 作者单位： | 中国地质大学资源学院，中国石油冀东油田，中海石油研究中心，河南油田研究院 |
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| 基金项目： | 国家自然科学基金
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中国地质大学(武汉)构造与油气资源教育部重点实验室基金 |
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| 摘 要： | 在综合分析区域地质、构造、沉积等资料的基础上,结合中国西北地区中生代构造背景、火成岩分布特征、平衡剖面的研究和热史方面的研究成果,以及参照碎屑矿物系数的时空展布特征,证实了早中侏罗世的西北地区处在2次构造运动(印支运动和燕山运动)强烈挤压与碰撞(即羌塘块体和拉萨块体分别向北拼贴于欧亚板块南缘)之间的相对松弛的弱伸展环境中,焉耆盆地侏罗系原型性质为拉张背景下的坳陷盆地;并在此基础上探讨了焉耆侏罗系盆地的形成机制以及后期构造作用对其进一步的改造,其构造格局最终定型为具有前陆盆地的结构特征,从而建立了其充填演化序列.
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| 关 键 词： | 博湖坳陷 动力学机制 盆地原型 后期改造 |
Formation Process of Bohu Depression of Yanqi Basin and Its Dynamic Mechanism |
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| CAI Jia.Formation Process of Bohu Depression of Yanqi Basin and Its Dynamic Mechanism[J].Earth Science-Journal of China University of Geosciences,2008,33(4). |
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| Authors: | CAI Jia |
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| Abstract: | On the basis of the integrated analysis of the regional geology,tectonic and deposition data,combined with the achievements of the predecessor and the tectonic setting of Northwest China in the Mesozoic,and the research on the distribution feature of igneous rocks,balanced cross section,geothermal history,clastic mineral coefficients,this paper proves that in the Early-Middle Jurassic,the Northwest China formd in a comparatively weak outspread environments between the intensive collision and extrusion of two tectonic movements(Indosinian movement and Yanshan movement).The formation and transformation mechanism of the Yanqi basin in the Jurassic is also discussed.The structure framework was determined as forland basin type and the filled sequence was built. |
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| Keywords: | Bohu depression dynamic mechanism prototype basin transformation in the latter period |
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