Glacial sediments greased the gears of plate tectonics

Earth's outer layer is composed of giant plates that grind together, sliding past or dipping beneath one another, giving rise to earthquakes and volcanoes. These plates also separate at undersea mountain ridges, where molten ...

What lies beneath: Volcanic secrets revealed

Lava samples have revealed a new truth about the geological makeup of the Earth's crust and could have implications for volcanic eruption early warning systems, a University of Queensland-led study has found.