Giant crater may have been extinction trigger | COSMOS magazine

Giant crater may have been extinction trigger | COSMOS magazine: "SYDNEY: One of the largest meteorite impacts in the world has been discovered in the Australian outback - an impact so powerful it may have been the trigger for a major extinction event.

The meteorite struck Australia around 300 million years ago and produced a 'shock zone' - the area of land deformed by the strike - at least 80 km wide.

Discovered by geothermal researchers, it is now buried deep under sedimentary rock. While the crater itself has probably eroded away, the land still bares the scars of the impact."