Crustal structure and tectonic study of North China Craton from a long deep seismic sounding profile
Crustal structure and tectonic study of North China Craton from a long deep seismic sounding profile
复制标题
华北克拉通长深地震测深剖面地壳结构与构造研究
DOI：
10.1016/j.tecto.2014.04.013
复制
发表时间：
2014-07
期刊：
影响因子：
2.9
通讯作者：
Lin, Jiyan
中科院分区：
文献类型：
--
作者：
Jia, Shixu;Wang, Fuyun;Tian, Xiaofeng;Duan, Yonghong;Zhang, Jianshi;Liu, Baofeng;Lin, Jiyan
在本文中，我们提出了一个1600公里长的折射/反射剖面，延伸东西横跨整个华北地区（NCC）的折射波和反射波的模拟结果，采用二维射线追踪。由此产生的P波速度模型揭示了NCC的不同地质单元之间的实质性结构变化。太行山是华北的地理和地质分界线。在华北克拉通东部的渤海湾盆地，克拉通的破坏表现为地壳减薄（~ 30 km）的普遍存在、大型沉积盆地的发育和壳幔边界耦合的减弱。这些特征表明华北克拉通东部新生代构造活动是继中生代破坏之后的又一次构造活动。在华北克拉通西部，克拉通保持高地壳P波速度，稳定、寒冷，壳幔边界耦合强烈。郯庐断裂和太行山断裂是华北克拉通的构造边界，在华北克拉通的破坏过程中起着重要作用。渤海湾盆地东部次级构造差异沉降在盆地伸展过程中的构造特征是，盆地内绝大多数断裂是断陷盆地与隆起区的分界。综合研究发现，东部NCC破坏南北差异明显，新生代大规模伸展主要发生在渤海湾盆地，局部地区和河淮盆地存在较弱的伸展。探讨了华北克拉通自中生代以来不同地质时期在区域构造应力场汇聚作用下的地壳上地幔构造演化。华北克拉通周边板块运动影响着华北东部岩石圈和地壳改造，控制着地震活动和成矿的深部构造背景。
In this paper, we present the results of modeling refracted and reflected waves employing 2D ray tracing for a 1600-km long refraction/reflection profile that extends E–W across the entire North China Craton (NCC). The resulting P-wave velocity models reveal substantial structural variations among different geological units of the NCC. The Taihangshan Mountains are the geographical and geological demarcation lines of the NCC. In the eastern part of the NCC, Bohai Bay basin, the craton appears to be destructed as evidenced from the widespread of crust thinning (~ 30 km), development of large sedimentary basins and weaken of crust–mantle boundary coupling. These features indicated that Cenozoic tectonic reactivation succeeded Mesozoic destruction in the eastern part of NCC. In the western part of NCC, the craton remains high crustal P wave velocity, stable, cold, and strongly crust–mantle boundary coupling crust. The Tanlu Faults and the Taihangshan Faults are the tectonic boundaries in the NCC and play important roles in the process of cratonic destruction. The structural feature of the east secondary tectonic differential settlement in the process of basin extension is that the most faults in Bohai Bay basin are the boundaries between the depression basin and uplift area. Comprehensive study found an apparent difference between the north and south part in eastern NCC destruction in that the large-scale Cenozoic stretching mainly occurred in the Bohai Bay basin and the weakly existed only in the local area and in Hehuai basin. We discussed the crust and upper mantle tectonic evolution of NCC under the action of the convergence of regional tectonic stress field in different geological periods since the Mesozoic era. The plate movement around NCC affects the lithospheric and crustal modification of the eastern North China, and controls the deep structural background of seismicity and metallogenesis.
登录
查看更多内容
影响因子：
--
作者：
Liu He
通讯作者：
Liu He
DOI：
10.1002/cjg2.1326
发表时间：
2009
期刊：
Chinese Journal of Geophysics
影响因子：
--
作者：
Shixu Jia;Cheng-ke Zhang;Jin-ren Zhao;S. Fang;Z. Liu;Junmeng Zhao
通讯作者：
Shixu Jia;Cheng-ke Zhang;Jin-ren Zhao;S. Fang;Z. Liu;Junmeng Zhao
影响因子：
3.8
作者：
Guochun Zhao;S. Wilde;Peter A. Cawood;M. Sun
通讯作者：
Guochun Zhao;S. Wilde;Peter A. Cawood;M. Sun
DOI：
10.1016/s1464-1895(01)00124-7
发表时间：
2001
期刊：
Physics and Chemistry of The Earth Part A-solid Earth and Geodesy
影响因子：
--
作者：
Yigang Xu
通讯作者：
Yigang Xu
影响因子：
5.7
作者：
Rixiang Zhu;Chen Ling;FuYuan Wu;Junlai Liu
通讯作者：
Rixiang Zhu;Chen Ling;FuYuan Wu;Junlai Liu