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通过对祁连山中西段河流沉积物粒径的测量统计,探寻其与青藏高原北缘主峰和高原高度的相关关系,建立相应的关系模型,并将模型应用到老君庙剖面,最后得出青藏高原北缘自8.35 Ma以来高原隆升过程曲线.据此认为青藏高原北部自8.35MaBP隆升以来,从平均海拔约900 m隆升到现在的约3700 m,其中8.35～3.1 MaBP隆升较慢,幅度较小.总抬升了420 m,3.1 MaBP至今,隆升加剧,表现为明显的后期加速过程,共抬升了约2400 m.0.9 Ma左右,青藏高原北部抬升到平均海拔约3000 m,进入冰冻圈;主峰达到4000 m以上,指示主峰发育冰川.
By measuring and measuring the sediment grain size of the central and western Qilian Mountains, the relationship between the main peak and the height of the plateau in the northern margin of the Qinghai-Tibet Plateau is explored. Corresponding relational models are established and the model is applied to the Laojunmiao profile. Finally, Since the rise of the northern Qinghai-Tibetan Plateau from 8.35 Ma BP, the uplift from the average elevation of about 900 m to the present about 3700 m, of which 8.35 ~ 3.1 MaBP uplift slowly, Uplift of 420 m and 3.1 Ma BP so far, the uplift intensified and manifested as obvious post-acceleration process, with a total increase of about 2400 m.0.9 Ma. The northern part of the Qinghai-Tibet Plateau rose to an average elevation of about 3000 m into the frozen Circle; the main peak reached 4000 m above, indicating the main peak of glaciers.