【摘 要】
：
河北省北部兴隍－平泉复向斜的西端发育了一种特殊类型的推覆构造，该推覆构造具有三重结构的特点，即由上叠瓦扇、下叠瓦扇和下伏系统组成。上叠瓦扇可以分为被分支断裂分割的太古
【机 构】
：
中国矿业大学资源与环境科学学院,河北省煤田物测队
论文部分内容阅读
河北省北部兴隍－平泉复向斜的西端发育了一种特殊类型的推覆构造，该推覆构造具有三重结构的特点，即由上叠瓦扇、下叠瓦扇和下伏系统组成。上叠瓦扇可以分为被分支断裂分割的太古字、长城系、蓟县系、青白口系和寒武－奥陶系５个逆冲岩席；各分支断裂上陡下缓，向下逐渐归并于Ｆ１主逆冲断裂上。Ｆ１断层下的石炭－二叠系也发育了一组叠瓦状逆冲断层，形成了与上叠瓦扇具有不同变形特征的下叠瓦扇。由于这一构造特殊的两套叠瓦扇结构，故笔者称其为复式叠瓦扇构造，这是一种新的推覆构造类型。
A special type of nappe structure is developed at the western end of the Huan-Huan-Pingquan syncoid in the northern part of Hebei Province. The nappe structure is characterized by a triple structure consisting of an upper fan, a lower fan and an under-lying system. The upper fan can be divided into five branches of the Pacific: Great Wall, Great Wall, Jixian, Qingbaikou and Cambrian-Ordovician faults. The branches are steeply dipping and gradually declining F1 main thrust fracture. A set of imbricate thrust faults have also developed in the Carboniferous-Permian system under the fault F1, forming the lower fan with different deformation characteristics. Because of this special structure of the two sets of overlapping tile fan structure, so I call it double tile fan fan structure, which is a new type of nappe structure.
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