interessante notizia geologica, non ci vogliono millenni prima che il magma causa una eruzione del supervulcano sotto Yellowstone
ma bastano pochi decenni una volta che il magna e entrato nella caldera
The early evidence, presented at a recent volcanology conference, shows that Yellowstone’s most recent supereruption was sparked when new magma moved into the system only decades before the eruption. Previous estimates assumed that the geological process that led to the event took millenniums to occur.
Beneath Yellowstone National Park lies a supervolcano, a behemoth far more powerful than your average volcano. It has the ability to expel more than 1,000 cubic kilometers of rock and ash at once — 250,000 times more material than erupted from Mount St. Helens in 1980, which killed 57 people. That could blanket most of the United States in a thick layer of ash and even plunge the Earth into a volcanic winter.
queste eruzioni potrebbero avere raffreddato il pianeta causando le estinzioni dei dinosauri