Climate-Driven Bedrock Incision in an Active Mountain Belt

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Science  20 Sep 2002:
Vol. 297, Issue 5589, pp. 2036-2038
DOI: 10.1126/science.1075078

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Measurements of fluvial bedrock incision were made with submillimeter precision in the East Central Range of Taiwan, where long-term exhumation rates and precipitation-driven river discharge are independently known. They indicate that valley lowering is driven by relatively frequent flows of moderate intensity, abrasion by suspended sediment is an important fluvial wear process, and channel bed geometry and the presence of widely spaced planes of weakness in the rock mass influence erosion rate and style.

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