Wilson, D;
Pogge Von Strandmann, P;
White, J;
Tarbuck, G;
Marca, A;
Atkinson, T;
Hopley, P;
(2021)
Seasonal variability in silicate weathering signatures recorded by Li isotopes in cave drip-waters.
Geochimica et Cosmochimica Acta
, 312
pp. 194-216.
10.1016/j.gca.2021.07.006.
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Abstract
Silicate weathering is a critical process in Earth’s carbon cycle, but the fundamental controls on weathering are poorly understood and its response to future climate change is uncertain. In particular, the potential for changes in seasonality or extreme weather events to control silicate weathering rates or mechanisms has been little studied. Here, we use lithium (Li) isotope measurements in bimonthly sampled drip-waters from two caves in the Yorkshire Dales (U.K.) to assess the response of silicate weathering processes to changes in temperature and hydrology over seasonal timescales. While the caves are contained in limestone bedrock, the drip-water Li isotope signal predominantly reflects silicate weathering of the overlying soils that are dominated by glacial till.
| Type: | Article |
|---|---|
| Title: | Seasonal variability in silicate weathering signatures recorded by Li isotopes in cave drip-waters |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.gca.2021.07.006 |
| Publisher version: | https://doi.org/10.1016/j.gca.2021.07.006 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Chemical weathering, Carbon cycle, Climate, Seasonality, Geochemistry, Lithium isotopes, PorewaterCaves |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10130885 |
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