Volcanoi

When plates collide, one often slides beneath another. The sinking landmass experiences intense heat and pressure, causing rock to melt and form magma .

Volcanologists categorize volcanoes based on their history and potential for future eruptions: volcanoi

Repeated eruptions cause layers of cooled lava and ash to build up, eventually forming the characteristic mountain shape known as a volcanic edifice . Stages of Activity When plates collide, one often slides beneath another