Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL092210 |
Formation of Longitudinal River Valleys and the Fixing of Drainage Divides in Response to Exhumation of Crystalline Basement | |
Thomas Bernard; Hugh D. Sinclair; Boris Gailleton; Matthew Fox | |
2021-04-06 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Variations in rock strength act as a first‐order control on mountain landscapes. However, the transient topographic signal of basement exhumation has not been explored. We use model outputs to demonstrate the mobility of drainage divides in mountain ranges in response to the exhumation of basement rocks and the implications for the morphology of river catchments. The exhumation of harder rocks within a catchment reduces upstream channel steepness and erosion rates in contrast to neighbouring catchments. The results are a shift in the orogen‐scale drainage divide towards the harder rocks, and the formation of range parallel longitudinal valleys as neighbouring river networks capture the headwaters of catchments impacted by the harder lithology. Our model outputs provide a process explanation for the initiation of many longitudinal valleys in mountain ranges, and for the pinning of drainage divides on rocks of higher strength as seen the Central Pyrenees, Western Alps or High Atlas. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/322048 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Thomas Bernard,Hugh D. Sinclair,Boris Gailleton,et al. Formation of Longitudinal River Valleys and the Fixing of Drainage Divides in Response to Exhumation of Crystalline Basement[J]. Geophysical Research Letters,2021. |
APA | Thomas Bernard,Hugh D. Sinclair,Boris Gailleton,&Matthew Fox.(2021).Formation of Longitudinal River Valleys and the Fixing of Drainage Divides in Response to Exhumation of Crystalline Basement.Geophysical Research Letters. |
MLA | Thomas Bernard,et al."Formation of Longitudinal River Valleys and the Fixing of Drainage Divides in Response to Exhumation of Crystalline Basement".Geophysical Research Letters (2021). |
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