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The Great Migration: 3.8 billion years of carbon circulation through Earth

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

Over geological time, the carbon cycle has connected surface ecosystems to the interior of the Earth. The complexity of the carbon cycle arises from at least two key properties: it is an evolved system — an emergent macroscopic structure shaped by biological evolution — and it evolves on a dynamic planet. For this reason, its complexity owes both to tectonic and biochemical factors. I will discuss, in particular, recent advances in understanding the mechanisms, longevity, and planetary singularity of the weak but sustained leaks of organic carbon between the surface, the lithosphere and the mantle of our planet through time.

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

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