The eruption of the Fuego volcano in Guatemala has triggered the evacuation of at least two villages on its slopes. Fuego, one of the most active volcanoes in the Western Hemisphere, started spewing lava and ash on Monday. Pyroclastic currents – rivers of gas, volcanic ash and rock fragments – continued to flow down Fuego’s
When tectonic plates move away from each other, lava can spill onto the sea floor along mid-ocean ridges.Credit: Doug Perrine/Nature Picture Library/SPL Geophysicists have captured, for the first time, the ocean floor in the act of separating at one of its seams. Using a set of more than 20 measuring stations placed in a 100-kilometer-long