Globally significant volcanic event formed Giants Causeway, scientists find

Geochronologists say Antrim coastlines basalt columns developed over 5.5m years - 8m less than thoughtFor centuries, the tale has been passed from generation to generation: how the Irish giant Finn McCool built the Giants Causeway in Northern Ireland to fight Benandonner, his Scottish rival, by hurling chunks of the Antrim coastline into the sea.Now, scientists have revealed it was intense volcanic activity during a major globally impacting volcanic event - and not a legendary battle between two...