In what could be some of the worst news for climate change since the election of Donald Trump, a group of scientists have discovered a massive reservoir of melting carbon hidden deep under the Western United States. Researchers used the world’s largest array of seismic sensors to map the reservoir, which covers an area of about 695,000 square miles and challenges everything scientists have previously thought about the amounts of carbon trapped inside the Earth. To make a long story short, there’s way more than anyone has ever predicted before.

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Located about 217 miles beneath the planet’s surface, the reservoir is made up of carbonates that are melting under temperatures as hot at 7,230 degrees Fahrenheit. According to Science Daily, carbonates are a large group of minerals – including magnesite and calcite – which contain a specific carbon ion that when molten is believed to be responsible for the electrical conductivity of the Earth’s mantle.

While it’s too deep underground to physically study, a research team from the Royal Holloway University of London employed a wide-ranging network made up of 583 seismic sensors to conduct their study. Those sensors honed in on some strange vibrations in the upper mantle, which in turn identified this immense pool of molten carbon. Based on what these sensors have told them, the researchers believe the Earth’s upper mantle might hold as much as 110 trillion tons of melted carbon.

“Under the western US is a huge underground partially-molten reservoir of liquid carbonate,” explains team member, Sash Hier-Majumder. “It is a result of one of the tectonic plates of the Pacific Ocean forced underneath the western US, undergoing partial melting, thanks to gasses like carbon dioxide and water contained in the minerals dissolved in it.”

It turns out this carbon is a bit of sleeping giant, as the scientists say this it will make its way out of the deep recesses of the Earth slowly via volcanic eruptions. But that seepage will add to the significant amounts of greenhouse gasses humans are adding to the planet’s atmosphere and contribute to climate change.

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“We might not think of the deep structure of Earth as linked to climate change above us, but this discovery not only has implications for subterranean mapping, but also for our future atmosphere,” Hier-Majumder explains. “For example, releasing only 1% of this CO2 into the atmosphere will be the equivalent of burning 2.3 trillion barrels of oil. The existence of such deep reservoirs show how important is the role of deep Earth in the global carbon cycle.”

Via Science Daily

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