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Using these 'indicator' microbes and their DNA sequences, the team tested the surface soil at an exploration site in the Northwest Territories where kimberlite had previously been confirmed through drilling.

They found that over the last 500 million years, there is a pattern where the plates start to pull apart, then 22 million to 30 million years later, kimberlite eruptions peak.

A new study offers clues to the mysteries of kimberlite eruptions, the source of most of the diamonds mined on Earth today.

That makes it difficult to pin down kimberlite eruptions’ cause, especially because no one has witnessed one of the furious blasts.

De Beers, through its CarbonVault initiative, has been trying to capture carbon from the atmosphere and lock it away in kimberlite, the rock in which diamonds are found.