Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 12, issue 1
Articles | Volume 12, issue 1
https://doi.org/10.5194/esurf-12-271-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-12-271-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 12, issue 1
Research article
 | 
31 Jan 2024
Research article |  | 31 Jan 2024

Probing the exchange of CO2 and O2 in the shallow critical zone during weathering of marl and black shale

Tobias Roylands, Robert G. Hilton, Erin L. McClymont, Mark H. Garnett, Guillaume Soulet, Sébastien Klotz, Mathis Degler, Felipe Napoleoni, and Caroline Le Bouteiller

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Latest update: 23 Oct 2025
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Short summary
Chemical weathering of sedimentary rocks can release carbon dioxide and consume oxygen. We present a new field-based method to measure the exchange of these gases in real time, which allows us to directly compare the amount of reactants and products. By studying two sites with different rock types, we show that the chemical composition is an important factor in driving the weathering reactions. Locally, the carbon dioxide release changes alongside temperature and precipitation.
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