There can be no magma ocean. If there's no magma ocean, where does the 'melt' come from that emerges from the volcanoes as lava? On Earth, melt is produced by tectonic forces. Because melt is less ...

A multidisciplinary synthesis of the Campi Flegrei, Italy volcanic setting highlights the importance of sub-caldera layering ...

Scientists have found previously undocumented ash deposits buried beneath the Lava Creek Tuff in Wyoming — and at least one of them could be from an unknown volcanic eruption, they say.