Nov 7, 2018 – Translated: The supervolcano located in Yellowstone National Park (United States), which is located in the northeast corner of the state of Wyoming and part of Montana and Idaho, could restart activities sooner than expected, although at the moment it has not given any alarm signal.
This has been revealed by research conducted by a group of specialists from Arizona State University, who presented their conclusions at the conference of the International Association of Volcanology and Earth Chemistry, held in Oregon.
The experts analyzed the fossilized ash deposits taken from the Lava Creek tuff, an extensive area of igneous rock that is the object of study by many scientists, revealing that the last major eruption took place when the new magma was moved to this system only decades before the explosion. Previously it was believed that the geological process that led to this event would have taken several millennia, publishes an article on the Very Interesting website.
The sizes of the crystals reflect the changes in the temperature of their environment, so that the measurement of the different crystals in layers can tell a lot about their history. In this case, the time between a fresh injection of hot magma from the underground depth and the eruption was measurable in decades (and not millennia), suggesting that if the supervolcano burst again, it could have much less time to predict it than it does.
Currently, it is relatively quiet. However, a new map published by the United States Geological Survey (USGS) reports certain deformations experienced in the surrounding terrain due to pressure caused by underground tremors: the ground has risen 7 centimeters in the Norris geyser basin and It has sunk about 3 centimeters in the area of the boiler.
This geological structure has the name of supervolcano because its eruptive power can exceed up to 100 times that of a conventional volcano, so it is also considered high risk.