Cenozoic multi-phase deformation in the Qilian Shan and out-of-sequence development of the northern Tibetan Plateau
Cenozoic multi-phase deformation in the Qilian Shan and out-of-sequence development of the northern Tibetan Plateau
复制标题
祁连山新生代多期变形与藏北高原乱序发育
DOI：
10.1016/j.tecto.2020.228423
复制
发表时间：
2020-05
期刊：
影响因子：
2.9
通讯作者：
Xiaosong Xiong
中科院分区：
文献类型：
--
作者：
Bing Li;Andrew V. Zuza;Xuanhua Chen;Daogong Hu;Zhaogang Shao;Bangshen Qi;Zeng-zhen Wang;Drew A. Levy;Xiaosong Xiong
青藏高原的隆起和变形分布是印度-亚洲碰撞的结果，这为在陆-陆碰撞背景下认识陆内构造提供了契机。青藏高原的北方边缘被祁连山冲断带和走滑的海原断裂所限制。这些新生代断裂系统对大陆汇聚起着重要的调节作用，但其形成时代、变形序列和变形机制仍存在争议。本研究通过地质填图、野外观测和磷灰石裂变径迹热年代学等综合手段，对藏北北方祁连山中、北方局部逆冲断层的形成时代和折返历史进行了研究。分析表明，祁连山中、北方在白垩纪经历了一次远场构造事件的快速冷却。始新世-渐新世，疏勒南山、妥来南山和妥来山断裂沿着一段逆冲冷却期。近端逆冲断层的复活和海原断裂西段的启动发生在约1000年。16 Ma，并推动了最终的中新世冷却和剥蚀到地表。我们认为，祁连山冲断带自新生代以来一直是喜马拉雅-青藏造山带北方的稳定和内部变形边界，涉及到与印度-亚洲碰撞的启动有关的始新世开始的叠置无序发展，并且跨越青藏高原北方的盆地和山脉经历了多期生长。
Uplift of the Tibetan Plateau and the distribution of deformation across it are the result of India-Asia collision, which bring an opportunity of understanding intracontinental tectonics in the context of continent-continent collision. The Tibetan Plateau is bound on the northern margin by the Qilian Shan thrust belt and the strike-slip Haiyuan fault. These Cenozoic fault systems play a critical role in accommodating continental convergence, yet the initiation age, deformation sequence and mechanisms of deformation are debated. In this study, integrated geologic mapping, field observations, and apatite fission track thermochronology were conducted to constrain the initiation ages of the localized thrust faults and the exhumation history of the central and northern Qilian Shan, northern Tibet. Our analyses reveal the central and northern Qilian Shan underwent rapid cooling during the Cretaceous as a result of a far-field tectonic event. In the Eocene-Oligocene, a period of thrust-related cooling occurred along the Shule Nan Shan, Tuolai Nan Shan and Tuolai Shan faults. Reactivation of the proximal thrust faults and initiation of the western segment of the Haiyuan fault occurred at ca. 16 Ma and drove final accelerated Miocene cooling and denudation to the surface. We argue that the Qilian Shan thrust belt has persisted as the stationary and internally deformed northern boundary of the Himalayan-Tibetan orogen since the early Cenozoic, involved overprinting out-of-sequence development starting by Eocene related to initiation of India-Asia collision, and the basins and ranges across the northern Tibetan Plateau have since experienced multi-phase of growth.
登录
查看更多内容
DOI：
10.1007/bf02911987
发表时间：
2001-10
期刊：
Science in China Series D: Earth Sciences
影响因子：
--
作者：
Chunhui Song;X. Fang;Jijun Li;Junping Gao;Zhijun Zhao;Majie Fan
通讯作者：
Chunhui Song;X. Fang;Jijun Li;Junping Gao;Zhijun Zhao;Majie Fan
DOI：
--
发表时间：
2006
期刊：
Geology in China
影响因子：
--
作者：
Wu Cai-lai
通讯作者：
Wu Cai-lai
影响因子：
4.6
作者：
Wang W;Zhang P;Yu J;Wang Y;Zheng D;Zheng W;Zhang H;Pang J
通讯作者：
Pang J
影响因子：
5.3
作者：
E. Sobel;Jie Chen;R. Heermance
通讯作者：
E. Sobel;Jie Chen;R. Heermance
西藏中部东昆仑山的中新生代演化及其对印亚碰撞期间盆地演化的意义
影响因子：
2.4
作者：
Wu Chen;Zuza Andrew V;Zhou Zhiguang;Yin An;McRivette Michael W;Chen Xuanhua;Ding Lin;Geng Jianzhen
通讯作者：
Geng Jianzhen