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Glaciers, weathering and isotopes

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Chemical weathering at the surface of the Earth removes atmospheric carbon dioxide and is widely considered to be the dominant negative climatic feedback mechanism buffering Earth’s climate over most of geological history. One major unknown in climate models is the effect of glaciers and ice sheets on terrestrial weathering rates, but by comparing chemical weathering processes in modern glaciated and un-glaciated terrain we can begin to understand how chemical weathering processes were affected by glacial-interglacial cycles in the past. In this talk I will present work from two catchments located in Svalbard, Norway which showcases the power of multiple metal isotope tracers to constrain weathering processes.

This talk is part of the Darwin College Sciences Group series.

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