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Researchers say a Supervolcano, like Lake Taupo, can erupt without being set-off by an earthquake or any other external trigger.
In a study published in Nature Geoscience a Swiss Team has found the sheer quantity of liquid magma inside the huge volcanoes is enough to start an eruption on its own.
Super-eruptions that dwarf all historical volcanic episodes in erupted volume1 and environmental impact2 are abundant in the geological record. Such eruptions of silica-rich magmas form large calderas. The mechanisms that trigger these super-eruptions are elusive because the processes occurring in conventional volcanic systems cannot simply be scaled up to the much larger magma chambers beneath supervolcanoes. Over-pressurization of the magma reservoir, caused by magma recharge, is a common trigger for smaller eruptions3, but is insufficient to generate eruptions from large supervolcano magma chambers4. Magma buoyancy can potentially create sufficient overpressure4, but the efficiency of this trigger mechanism has not been tested. Here we use synchrotron measurements of X-ray absorption5 to determine the density of silica-rich magmas at pressures and temperatures of up to 3.6 GPa and 1,950 K, respectively. We combine our results with existing measurements of silica-rich magma density at ambient pressures6, 7 to show that magma buoyancy can generate an overpressure on the roof of a large supervolcano magma chamber that exceeds the critical overpressure of 10–40 MPa required to induce dyke propagation4, even when the magma is undersaturated in volatiles. We conclude that magma buoyancy alone is a viable mechanism to trigger a super-eruption, although magma recharge and mush rejuvenation8, volatile saturation9 or tectonic stress10 may have been important during specific eruptions.
There are so many predictions/prophecies that involve fire at the end of the world, makes you wonder.