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根据地质和地球物理特征,中国北方大陆可区分为造山带型和裂谷型两类岩石圈,其中造山带型又可区分出分别代表古生代、中生代和新生代物质结构的造山带型岩石圈:在从空间上,自西向东分别由以天山为代表的新生代造山带型、以额济纳旗为代表的古生代造山带型、以大兴安岭为代表的燕山期造山带型和张广才岭为代表的新生代裂谷型岩石圈组成,反映了古生代形成的中亚造山带在中新生代大陆动力学过程中的分异演化,导致不同类型岩石圈形成和陆壳、岩石圈地幔物质组成、结构的不均一性,以及构成大规模成矿作用大体上以E110°为界,西部主要为晚古生代,东部主要为中生代的格局。简要讨论了不同岩石圈类型的壳幔物质、结构的地质含义,以及区域找矿方向和深部找矿空间问题。
According to the geological and geophysical characteristics, the northern mainland China can be divided into two types of orogenic belt and rift-type lithosphere. The orogenic belt type can also distinguish the orogenic belt lithosphere that represent the Paleozoic, Mesozoic and Cenozoic material structures respectively: From the perspective of space, from west to east are the Cenozoic orogenic belt represented by Tianshan, the Paleozoic orogenic belt represented by Ejin Banner, the Yanshanian orogenic belt represented by Daxinganling, and the Cenozoic represented by Zhang Guangcailing Rift lithosphere, reflecting the Paleozoic formation of the Central Asian orogenic belt in the Mesozoic and Cenozoic continental dynamics of the evolutionary process, resulting in the formation of different types of lithosphere and continental crust, lithospheric mantle material composition, structural heterogeneity The formation of large-scale metallogenetic processes is generally dominated by E110 °, with the late Paleozoic in the west and the Mesozoic in the east. This paper briefly discusses the geological implications of crust-mantle materials and structures with different lithospheric types, as well as the regional prospecting direction and the deep exploration space.