Deep Carbon Cycle Blog

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Latest Articles and News

The deep carbon cycle was one of Earth’s most essential processes, regulating the movement of carbon between the planet’s surface and its deep interior over millions to billions of years. While most people are familiar with the short-term carbon cycle—where carbon moves through plants, animals, and the atmosphere—the deep carbon cycle operates on a much larger scale, shaping Earth’s climate and geology. This blog will explore how the deep carbon cycle works, why it matters, and the critical role it plays in maintaining Earth’s long-term balance.

Ambrym: A Top Three Worldwide Volcanic Emitter of Deep Carbon Dioxide and Other Magma-Derived Volatiles

The volcanic island of Ambrym, located in the archipelago of Vanuatu in the South Pacific, was one of the most active volcanoes on Earth. What makes it particularly significant was its role as a major emitter of deep carbon dioxide (CO₂) and other magma-derived gases. Ambrym ranks among the top

Superdeep Diamonds Provide Evidence for a Melting Barrier to Deep Carbon Subduction

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

Diamond Formation in Ancient, Underground Seawater

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