Rapid Himalayan Erosion Triggers Hidden Source of CO2: Study
Recent research by IISER Pune and Wadia Institute of Himalayan Geology reveals that rapid erosion in the Himalayan mountains releases significant amounts of carbon dioxide into the atmosphere. While silicate weathering typically acts as a carbon sink over millions of years, the oxidation of sulphides in exposed rocks accelerates CO2 emissions. This counteracts the cooling effect of mineral weathering, highlighting the complex role of mountainous regions in the global carbon cycle.
Key Points
- Rapid erosion in the Himalayas exposes sulphides that oxidize and release CO2 into the atmosphere.
- Silicate weathering traditionally acts as a carbon sink over long geological timescales.
- Sulphide oxidation in glacier-fed catchments accelerates carbon emissions, counteracting cooling effects.
- The findings demonstrate that mountain catchments are significant geological sources of carbon dioxide.
Exam Facts
- Researchers from IISER Pune and the Wadia Institute of Himalayan Geology conducted the study.
- The study was published in Chemical Geology.
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