Supervulcanul care se găseşte sub Parcul Naţional Yellowstone este gigantic, cu mult mai mare decât se ştia.
Camera cu roca topită a vulcanului se întinde pe o distanţă de peste 90 de kilometri, o suprafaţă de 2,5 ori mai întinsă decât era calculată iniţial şi ajunge până la adâncimi de 15 kilometri.
Conform presei din SUA, dacă aceasta ar ieşi din adâncurile Pământului, în urma unei erupţii, SUA ar fi acoperite complet de cenuşă. Astfel, în cazul în care supervulcanul de la Yellowstone ar erupe, consecinţele ar fi catastrofale.
Ultima erupţie majoră a acestuia, care a avut loc acum 640.000 de ani, a trimis cenuşă în toată America de Nord, afectând clima pe întreaga planetă.
Mai mult, s-a calculat că o erupţie majoră este posibilă, dat fiind faptul că vulcanul Yellowstone erupe la fiecare 700.000 de ani.
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