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BG | Articles | Volume 17, issue 13
Biogeosciences, 17, 3613–3630, 2020
https://doi.org/10.5194/bg-17-3613-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 17, 3613–3630, 2020
https://doi.org/10.5194/bg-17-3613-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 10 Jul 2020

Research article | 10 Jul 2020

Quantity and distribution of methane entrapped in sediments of calcareous, Alpine glacier forefields

Biqing Zhu et al.

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We provide evidence that the greenhouse gas methane (CH4) is enclosed in calcareous glacier-forefield sediments across Switzerland. Geochemical analyses confirmed that this ancient CH4 has its origin in the calcareous parent bedrock. Our estimate of the total quantity of CH4 enclosed in sediments across Switzerland indicates a large CH4 mass (~105 t CH4). We produced evidence that CH4 is stable in its enclosed state, but additional experiments are needed to elucidate its long-term fate.
We provide evidence that the greenhouse gas methane (CH4) is enclosed in calcareous...
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