Gas emissions from volcanoes and active tectonic regions: Implications for the deep carbon cycle

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• Prof. Tobias Fischer, University of New Mexico. Chair of Deep Earth CArbon Degassing (DECADE), Deep Carbon Observatory
• Monday 28 January 2019, 13:00-14:00
• Harker 1, Department of Earth Sciences, Downing Street.

If you have a question about this talk, please contact Andy Buckley.

Active volcanoes are arguably the main pathways for mantle volatiles, including carbon, to enter the hydrosphere and atmosphere. Carbon return to the mantle via subduction results in a deep carbon cycle that appears balanced within current flux uncertainties. However, recent work suggests that carbon degassing through faults in continental rifts, such as the East Africa Rift, contribute a significant and previously unquantified amount of carbon to the atmosphere. If correct, this observation not only implies current net outgassing of carbon from the mantle to the surface it may also require that significant amounts of carbon are stored in the mantle below continents. This talk explores these and other aspects of the deep carbon cycle and some of its implications.

This talk is part of the Occasional Earth Science Seminars series.

This talk is included in these lists:

• Harker 1, Department of Earth Sciences, Downing Street
• Department of Earth Sciences seminars

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