Articles | Volume 4, issue 3
Earth Surf. Dynam., 4, 727–742, 2016
https://doi.org/10.5194/esurf-4-727-2016
Earth Surf. Dynam., 4, 727–742, 2016
https://doi.org/10.5194/esurf-4-727-2016

Research article 22 Sep 2016

Research article | 22 Sep 2016

Oxidation of sulfides and rapid weathering in recent landslides

Robert Emberson et al.

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Short summary
Rapid dissolution of bedrock and regolith mobilised by landslides can be an important control on rates of overall chemical weathering in mountain ranges. In this study we analysed a number of landslides and rivers in Taiwan to better understand why this occurs. We find that sulfuric acid resulting from rapid oxidation of highly reactive sulfides in landslide deposits drives the intense weathering and can set catchment-scale solute budgets. This could be a CO2 source in fast-eroding mountains.