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当前学术界在青藏高原地面何时达到现代高度问题上存在着许多不同观点 ,概括起来主要有 3种 :14Ma前已达到高于现代的最大高度 ,8Ma前已达到或超过现代高度 ,距今 3.4 Ma来分阶段强烈上升并逐步达到现代高度 .之所以出现如此大的意见分歧 ,除高原面积广阔、研究程度不深和覆盖面不够的原因外 ,不同研究者所使用研究方法和证据的差异也是重要因素 .在分析了各种证据对高原地面上升的记录机理后 ,我们认为夷平面、河流阶地、山麓相砾岩和高原周围盆地物质堆积速率等证据较准确地记录了高原的地面抬升 ,今后必须加强这类证据的研究 ;断层活动、地层褶皱、火山喷发、岩体热演化、生物演化、气候变化等记录不是高原地面抬升的直接证据 ,但可以作为推断高原隆升的辅助资料 .
At present, there are many different opinions on the question of when the ground surface of the Tibetan Plateau reaches the modern heights. There are mainly three kinds of opinions that can be summed up: the maximum height above the modern reached to 14 Ma and reached or exceeded the modern height before 8 Ma, Ma to stage a strong rise in stages and gradually reach the modern height of the reason why such a large differences of opinion, in addition to a large plateau area, the degree of research is not deep and inadequate coverage reasons, different researchers used research methods and evidence of differences is also important After analyzing the recording mechanism of various evidences on the uplift of the plateau, we believe that the ground uplift of the plateau, the river terraces, the foothill conglomerate and the deposition rate of the basins around the plateau accurately record the ground uplift of the plateau. In the future, It is not the direct evidence of uplift on the plateau, but can be used as a supplementary data to infer the plateau uplift.