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一、网络构造体制及其成生机制和地震活动性中国及外围地区莫霍面深度分布图(1/1500万)呈现出以准经向与准纬向为主、深层隆坳相间与浅层基底盆山构造耦合共轭、构成不同走向与不同形态规模的网络构造体制相互拼接的空间构造态势。图1为青藏高原—西蒙古高原及邻区莫霍面深度和构造体制(系)分布。可见:Ⅰ、东亚滨太平洋经向为主的新华夏网络构造体制;Ⅱ、亚洲大陆中部纵贯南北的青藏高原—西蒙古高原网络构造体制;亚洲大陆南部与印度洋之间,以纬向为主的青
First, the network structure system and its mechanism of birth and seismicity Moho depth map of China and its peripheral regions (1/1500 million) showed a quasi-meridional and quasi-latitude-oriented, deep sag phase and shallow Base basin basin mountain structure coupling conjugate, constitute different trends and different forms of network structure of the splicing of the spatial structure of the situation. Figure 1 shows the distribution of depth and tectonic system (system) of the Moho in the Tibetan Plateau-West Mongolia Plateau and its adjacent areas. It can be seen that: Ⅰ. The New China network structure characterized by the warp direction of the East Asia and the Pacific; Ⅱ. The structural system of the Qinghai-Tibet Plateau - the plateau network of the Mongolian Plateau that runs through the north and south of the Asian continent; the southern part of Asia and the Indian Ocean are mainly zonal Green