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根据西北地区的地质和地球物理特征,区分出中国西北大陆以准噶尔和塔里木为代表的克拉通型岩石圈和造山带型岩石圈,而造山带型岩石圈又可以区分为以额济纳旗为代表的古生代造山带型岩石圈(老物质新结构)和包括天山、阿尔泰山、昆仑山在内的新生代造山型岩石圈(老物质新结构);依据岩石学方法、壳幔演化模型和造山带形成过程以及地震波速与岩石化学成分之间的关系,建立相应类型岩石圈的壳幔岩石学结构,讨论了不同岩石圈类型的壳幔物质结构、地壳和岩石圈地幔厚度的地质含义及其找矿意义。
According to the geology and geophysical characteristics of Northwest China, the craton-type lithosphere and orogenic belt lithosphere typified by Junggar and Tarim are distinguished from each other in Northwest China, while the orogenic belt lithosphere can be distinguished as Ejinaqi Paleozoic orogeny lithosphere (old material and new structure) and Cenozoic orogeny lithosphere (old material and new structure) including Tianshan Mountains, Altai Mountains and Kunlun Mountains. According to the petrology method, the crust-mantle evolution model and orogenic belt formation Process and the relationship between seismic velocity and chemical composition of rock, the crust-mantle petrological structure of lithosphere was established, the crust-mantle lithosphere structure of different types of lithosphere, the geological meaning of crust and lithosphere mantle thickness and its prospecting significance.