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巴颜喀拉地块位于青藏高原东北部,是古特提斯的主体,对其进行深入的研究不仅对确定古特提斯的演化过程与方式具有重要意义,而且对探讨该地区与古板块演化有关的成矿地质作用和矿产分布规律具有重要的现实意义。巴颜喀拉山群位于巴颜喀拉地块,对其物源研究较为薄弱。碎屑岩中的碎屑组分特征和地球化学特征可以反映物源区和沉积盆地的构造环境。本文通过对三叠系巴颜喀拉山群变碎屑岩岩相学特征、沉积结构特征、地球化学判别参数以及地球化学判别图解的研究,结合前人在这一地区所做的如古水流等相关工作,认为巴颜喀拉沉积盆地是在古老基底裂解的基础上形成的,存在裂陷扩张、海水加深的过程,具有大陆岛弧和活动大陆边缘型物源的特征,接受其北部东昆仑造山带碎屑的沉积,沉积物来自亲上地壳长英质源区。
Located in the northeastern part of the Qinghai-Tibet Plateau, the Bayan Harrat massif is the main body of the ancient Tethys. It is of great significance not only for determining the evolution process and method of the ancient Tethys, but also for exploring the relationship between the area and the ancient plate Evolution related to the metallogenic geological and mineral distribution has important practical significance. The Bayan Har mountain group is located in the Bayan Kara area, its source of research is relatively weak. The detrital component features and geochemical characteristics of clastic rocks can reflect the tectonic setting of the source area and the sedimentary basin. Based on the study of lithofacies petrographic features, sedimentary structural features, geochemical discriminant parameters and geochemical discriminant diagrams of the Bayan Harness Group in the Triassic, combined with the previous ancient water flow in the region It is considered that the Bayanhar sedimentary basin is formed on the basis of the ancient basement pyrolysis and has the processes of rifting expansion and seawater deepening with characteristics of continental island arcs and active continental marginal provenance. Kunlun orogenic belt detritus sediments, sediments from the pro-continental crust Longyuan source area.