Alfred Wegener published his proposal that continents had moved. He presented various lines of evidence, of which the best remembered is the fact that the opposite shores of the ...

To me, it’s an eruption because it’s throwing rocks and it’s on a volcano. It could be phreatic or magmatic. It’s phreatic if it’s driven by heated groundwater, or magmatic gasses from an intrusion, ...

Iceland can do surprises. Its main activity is in a limited number of volcanoes which can erupt anytime, with frequencies ranging between once per century to twice per decade. These are the usual ...