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通过对念青唐古拉山主峰地区第四纪冰碛地层划分与同位素测年,发现主峰地区的第四纪冰川分别形成于70 0～6 0 0kaBP、2 0 0～14 0kaBP和70～30kaBP三个时段,指示了自中更新世以来念青唐古拉山中段开始大规模隆升,冰川活动加剧,并堆积了相应的冰碛物。根据念青唐古拉山主峰地区基岩地层与岩性的空间分布、不同火成岩和变质岩组合的形成深度和不同冰期冰碛物砾石成分统计研究,发现冰川对基岩剥蚀与念青唐古拉山中段隆升过程有着明显的对应关系。本文从念青唐古拉山主峰地区的基岩地层的岩石成分和分布的研究,及其对山脉隆升与冰碛物成分的关系等方面,分析了念青唐古拉山脉的切割及其对山脉隆升的反映。念青唐古拉山主峰地区的隆升过程可较好地与青藏高原的隆起相对比,它应是青藏高原隆升的响应。
Through the Quaternary moraine stratigraphy and isotopic dating of the main peak area of the Nyainqentanglha Mountain, it is found that the Quaternary glaciers of the main peak area are formed respectively from 70 0 ~ 600kaBP, 2000 ~ 1400kaBP and 70 ~ 30kaBP The period marked the beginning of a large upturn in the central segment of the Nyainqentanglha Mountains since the mid-Pleistocene, resulting in increased glacier activity and accumulation of corresponding moraines. According to the spatial distribution of bedrock stratigraphy and lithology, the formation depth of different igneous rocks and metamorphic rocks and the statistics of gravel composition in different glacial moraines in the main peak area of the Nyainqentanglha Mountain, it is found that the glacier can denote the bedrock erosion and the uplifting process in the middle of the Nyainqentanglha Mountain Has a clear correspondence. In this paper, the rock composition and distribution of bedrock strata in the main peak of the Nyainqentanglha mountain area and its relationship with the uplift of the mountains and the composition of the moraine are analyzed. The cutting of the Nyainqentanglha Range and its effect on uplift of the mountains The reflection. The uplift process in the area of the main peak of the Nyainqentanglhara Mountain can be compared favorably with the uplift of the Qinghai-Xizang Plateau and should be the response of the uplift of the Qinghai-Tibet Plateau.