Stay up-to-date with the latest research and articles on the deep carbon cycle — how carbon travels between Earth’s surface and its deep interior over millions to billions of years. Discover surprising pathways of carbon release (like continental rifting zones), how mantle redox conditions regulate carbon fate, what role diamonds play in Earth’s interior carbon story, and how deep Earth carbon degassing impacts climate and geology.
In a recent letter published in Nature, researchers propose that most carbon goes no deeper than about 300 to 500 kilometers, at which point a carbon barrier limits carbon recycling into the deeper mantle. Carbon was cycled from Earth’s surface to its depths, emerging through the crust from volcanoes, and
In a study published in Nature, a team of scientists describes an unexpected mechanism for diamond formation relying on ancient, subducted seawater. Diamonds are crystals of carbon, formed deep in Earth. As diamond crystals grow, they sometimes trap fluids or other mineral crystals, micro-samples of their surrounding environment. In a
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