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American Focus > Blog > Tech and Science > Scientists Found The ‘Lid’ Keeping The Yellowstone Supervolcano From Erupting : ScienceAlert
Tech and Science

Scientists Found The ‘Lid’ Keeping The Yellowstone Supervolcano From Erupting : ScienceAlert

Last updated: April 30, 2025 12:00 am
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Scientists Found The ‘Lid’ Keeping The Yellowstone Supervolcano From Erupting : ScienceAlert
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Scientists Reveal Yellowstone Supervolcano’s Mysterious Magma Reservoir

Researchers in the United States have made a groundbreaking discovery regarding the Yellowstone supervolcano’s underground reservoir of magma. A team of geologists and Earth scientists has identified the deep magma ‘cap’ that maintains the volcanic system’s high pressures and temperatures underground.

The magma cap, located between 3.5 and 4 km below the northeastern part of the Yellowstone caldera, acts as a lid that releases small amounts of gas periodically, preventing a catastrophic eruption. This phenomenon has been likened to the volcano’s steady breathing, indicating a state of peaceful dormancy.

Earth scientist Brandon Schmandt from Rice University explains, “For decades, we’ve known there’s magma beneath Yellowstone, but the exact depth and structure of its upper boundary has been a big question. What we’ve found is that this reservoir hasn’t shut down – it’s been sitting there for a couple million years, but it’s still dynamic.”

Using innovative seismic imaging techniques, the researchers have identified the top of the magma reservoir beneath Yellowstone caldera. The boundary, located approximately 3.8 kilometers below the surface, marks the transition to a mixture of supercritical fluid and magma, indicating the presence of volatile materials.

Seismic Explorer
How a vibrator truck generates seismic waves that probe and reflect off deep crust layers. (The University of Texas at Austin)

The magma cap, comprising supercritical water and rhyolite magma, is effectively sealed, allowing for the gradual cooling and crystallization of material in the upper crust. This process maintains relatively stable pressures within the supervolcano, preventing a catastrophic eruption.

Recent evidence suggests that the risk of a Yellowstone super-eruption is decreasing, with studies indicating that the volcano is currently in a state of repose. While geysers and small earthquakes may continue to occur in the region, the likelihood of a catastrophic event remains low.

See also  First Signs of a 'Ghost' Plume Reshaping Earth Detected Beneath Oman : ScienceAlert

The study, published in Nature, sheds light on the complex dynamics of the Yellowstone supervolcano and provides valuable insights into its potential for future eruptions.

TAGGED:EruptingKeepingLidScienceAlertScientistsSupervolcanoYellowstone
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