Surface uplift, tectonics, and erosion of eastern Tibet from large-scale drainage patterns
Surface uplift, tectonics, and erosion of eastern Tibet from large-scale drainage patterns
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DOI：
10.1029/2002tc001402
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发表时间：
2004-01-17
期刊：
影响因子：
4.2
通讯作者：
Chen, L
中科院分区：
文献类型：
--
作者：
Clark, MK;Schoenbohm, LM;Chen, L
在中新世开始之前或与之同时发生的河流捕获和反转破坏了古水系。尽管由于捕获和反转导致横向变化，向东和向南排水的河流叠加穿过东南高原边缘，表明隆升发生在长波长（bbb1000公里），模拟了目前的低梯度地形坡度。因此，通过捕获和反转事件对水系的重组解释了东部高原河流的大多数特殊模式，而不必诉诸大规模的构造剪切。
[1] A new regional compilation of the drainage history in southeastern Tibet suggests that the modern rivers draining the plateau margin were once tributaries to a single, southward flowing system which drained into the South China Sea. Disruption of the paleo-drainage occurred by river capture and reversal prior to or coeval with the initiation of Miocene (?) uplift in eastern Tibet, including similar to 2000 m of surface uplift of the lower plateau margin since reversal of the flow direction of the Yangtze River. Despite lateral changes in course due to capture and reversal, the superposition of eastward and southward draining rivers that cross the southeastern plateau margin suggests that uplift has occurred over long wavelengths (> 1000 km), mimicking the present low-gradient topographic slope. Thus reorganization of drainage lines by capture and reversal events explains most of the peculiar patterns of the eastern plateau rivers, without having to appeal to large-magnitude tectonic shear.