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Magma beneath the Yellowstone Caldera — one of the largest volcanic systems on the planet — might be advancing northeast, as indicated by a study published by the United States Geological Survey (USGS) on Wednesday.
A caldera refers to a significant depression formed from the eruption and subsequent collapse of a volcano.
The study, titled “The evolution of basaltic–rhyolitic melt storage at Yellowstone Caldera,” appeared in the weekly journal Nature, which showcases peer-reviewed studies in the fields of science and technology.
The researchers reported that the basalt regions within the caldera are gradually ascending to the upper crust, where heat is being dispersed northeast. This intensifies the area housing the “rhyolitic melt,” the liquid element of the magma.
They identified seven zones with a significant concentration of magma, varying from depths of 4 to 47 kilometers, with some contributing to other regions.
The scientists employed a magnetotelluric method, which gauges electromagnetic fields that travel through the earth, to investigate the distribution of magma beneath the Yellowstone Caldera.
Further investigation necessary
The Yellowstone Caldera is a substantial crater situated in the western-central part of Yellowstone National Park in northwestern Wyoming. The park also covers small sections of the US states of Montana and Idaho.
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