Mesozoic thrusts and extensional structures in the Daqingshan orogen, Inner Mongolia, and their temporal and spatial relationship  

作　　者：QI Guowei ZHANG Jinjiang WANG Xinshe GUO Lei 

机构地区：[1]Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, China School of Earth and Space Sciences, Peking University, Beijing 100871, China [2]Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China

出　　处：《Progress in Natural Science:Materials International》2007年第2期177-186,共10页自然科学进展·国际材料（英文版）

基　　金：Supported by the Special Project of the National Best Ph. D. Dissertations in College and University (200022); National Natural Science Foundation of China (Grant No. 40572115)

摘　　要：Three large-scale thrusts developed in the Daqingshan orogen, Inner Mongolia, with a northeast-east trending from Louhuashan to Suletu are described in this paper. These northwest-directed thrusts, together with the four tectonic belts （or tectonic sheets） separated by these faults, formed a typical thrusting system. The originally defined Hohhot metamorphic core complex may be a tectonic sheet, making the uppermost tectonic unit of the thrusting system and truncated by the Daqingshan detachment fault on top. The existing tectono-chronological studies showed that the thrusting of this region possibly happened at the same time as the extension along the top detachment fault. This presents that the contraction and extension in Daqingshan orogen were probably simultaneous. The structural pattern of the Daqingshan orogen can be correlated to the Himalayan orogen, and models for simultaneous thrusting and detachment in Himalaya may give a hint for explaining the development of the Daqingshan orogen.三大规模戳在 Daqingshan orogen 发展了，内部蒙古，与东北东方，到 Suletu 的从 Louhuashan 的 trending 在这篇论文被描述。这些指导西北的戳，和四条构造的带(或构造的表) 由这些差错分开了，形成了一个典型推进系统。原来定义的 Hohhot 变形核心建筑群可以是一张构造的表，做推进的系统的最高的构造联合起来并且在顶上由 Daqingshan 分开差错截断了。存在 tectono 按年代先后的研究证明可能推进这个区域沿着最高的分开差错发生在象延期的一样的时间。这在 Daqingshan orogen 的收缩和延期可能是同时的礼品。Daqingshan orogen 的结构的模式能为同时的推进被相关到喜玛拉雅的 orogen，和模型，在 Himalaya 的分开可以为解释 Daqingshan orogen 的发展给一个提示。

关 键 词：Daqingshan thrast metamorphic core complex detachment fault contraction-extension transform Himalaya. 

分 类 号：P54[天文地球—构造地质学]