Did magnetic blip trigger mass extinction?
Friday, December 12, 2008 - 17:14
in Earth & Climate
New theory suggests the Permian-Triassic mass extinction was set in motion 15 million years earlier, deep in the Earth. On the edge of the molten outer core, a plume of super-hot material began rising through the mantle, upsetting convection in the core and throwing the planet's magnetic field into disarray.