Articles | Volume 10, issue 3
Earth Surf. Dynam., 10, 513–530, 2022
https://doi.org/10.5194/esurf-10-513-2022
Earth Surf. Dynam., 10, 513–530, 2022
https://doi.org/10.5194/esurf-10-513-2022
Research article
07 Jun 2022
Research article | 07 Jun 2022

The effect of lithology on the relationship between denudation rate and chemical weathering pathways – evidence from the eastern Tibetan Plateau

Aaron Bufe et al.

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Short summary
Erosion modulates Earth's carbon cycle by exposing a variety of lithologies to chemical weathering. We measured water chemistry in streams on the eastern Tibetan Plateau that drain either metasedimentary or granitoid rocks. With increasing erosion, weathering shifts from being a CO2 sink to being a CO2 source for both lithologies. However, metasedimentary rocks typically weather 2–10 times faster than granitoids, with implications for the role of lithology in modulating the carbon cycle.