منابع مشابه
Effects of physical erosion on chemical denudation rates: A numerical modeling study of soil-mantled hillslopes
Article history: Many biogeochemical and E Received 29 November 2007 Received in revised form 19 May 2008 Accepted 21 May 2008 Available online 4 June 2008 Editor: R.W. Carlson
متن کاملEstimating long-term chemical denudation rates on soil-mantled hillslopes using cosmogenic nuclides: Effects of time-varying erosion
Many biogeochemical and Earth surface processes depend critically on chemical weathering. The immediate products of chemical weathering are present as solutes and secondary minerals in groundwater, soils, and streams, and form the nutritional foundation for terrestrial biogeochemistry. Chemical weathering also contributes to physical erosion by weakening bedrock and producing easily erodible re...
متن کاملGeomorphic Controls on Andean Denudation Rates
To predict erosion rates throughout the Andes, we conducted a multiple regression analysis of the sediment discharge from 47 drainage basins in the Bolivian Andes and various topographic, climatologic, and geologic parameters. These mountainous basins are typically large (17–81,000 km; km), often have decades of measurement mean p 11,000 data on daily water and sediment discharge, and display a...
متن کاملRapid, long-term rates of denudation
High rates of erosion (1-15 mm/yr) of fluvial strata have persisted over intervals of 0.2-1.5 m.y. and across areas of 60-2000 km 2 in the Cenozoic foreland basin of northern Pakistan. These rates occur in areas associated with thrust shortening, and they indicate that erosion nearly kept pace with the rates of latest Miocene to Pleistocene uplift. Such high rates of erosion are predicted to pr...
متن کاملThe contribution of mountains to global denudation
The hypothesis that mountains infl uence global climate through links among rock uplift, physical and chemical denudation, and the carbon cycle remains vigorously debated. We address the contribution of mountains to global denudation with an empirical model that predicts that >50% of the total denudation and 40% of the chemical denudation occur on the steepest ~10% of Earth’s terrestrial surfac...
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ژورنال
عنوان ژورنال: Geologische Rundschau
سال: 1919
ISSN: 0016-7835,1437-3262
DOI: 10.1007/bf01801584