The uplifting processes of the Tibetan Plateau since 0.5 Ma B.P. Evidence from hydrothermal activity in the Gangdise Belt
The uplifting processes of the Tibetan Plateau since 0.5 Ma B.P. Evidence from hydrothermal activity in the Gangdise Belt
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DOI：
10.1360/yd2001-44-s1-35
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发表时间：
2001-10
期刊：
影响因子：
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通讯作者：
Zq Hou;ZQ Li;Xm Qu;Yf Gao;Lc Hua;Mp Zheng;Li;W. Yuan;袁万明
中科院分区：
文献类型：
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作者：
Zq Hou;ZQ Li;Xm Qu;Yf Gao;Lc Hua;Mp Zheng;Li;W. Yuan;袁万明
青藏高原的隆升机制和时代尚无定论，一直是地质研究的热点。本文根据温泉沉积物的ESR年龄讨论了热液活动的时代和规模。ESR测年结果表明，热液活动主要发生在5 0×10 4a、5 0×10 4~4 7×10 4、40×10 4~35×10 4、2 7×10 4~2 0×10 4和10×10 4-0 aB.P.这一结论得到了地球物理资料和内高原及周边沉积物的支持。通过对高原深部约束机制和隆升拉张作用的制约分析，阐明了青藏高原自50×104aB.P.以来的隆升过程。
There is no final conclusion yet on the uplifting mechanism and epoch of the Tibetan Plateau, which is a hot point of the geological research. This paper discusses the epoch and scales of the hydrothermal activities based on the ESR ages of hot-spring sediments. The ESR ages show that hydrothermal activities mainly happened in four periods: 50×10 4 a, 50×10 4 —47×10 4 , 40×10 4 —35×10 4 , 27×10 4 —20×10 4 and 10×10 4 —0 aB.P.. This conclusion is supported by the geophysical data and the inner plateau and surrounding sediments. Through analyzing the constraints of the deep restraint mechanism and uplift tensile function of the plateau, the uplifting processes of the Tibetan Plateau since 50×10 4 a B. P. is elucidated.