Australia born with a bang
Haven't you been waiting to find out what ever happened to Gondwanaland? The good news is that it was not caused by global warming. It is interesting that we are getting big news from both poles in recent days. Earlier reports discussed the tropical climate at the North Pole some time ago.SCIENTISTS believe they have finally solved one of Earth's greatest mysteries: what caused the great extinction of life hundreds of millions of years ago.
The answer was revealed yesterday when an American team announced it had discovered the world's biggest meteor crater almost two kilometres under the ice in Antarctica.
They say a meteor almost 50 kilometres wide caused a 500-kilometre-wide crater deep under the Wilkes Land region of Antarctica, directly south of Australia.
The massive explosion from the impact probably created the continent of Australia, forcing it to break away from the existing land mass.
The incredible discovery caused huge excitement among Australian scientists last night. It could be the missing link in the geological formation of the continents. It would also answer why life on Earth was almost completely wiped out hundreds of millions of years ago.
The meteor the size of Sydney struck 250 million years ago and must have been the biggest explosion ever seen on the planet, far bigger than the 10-kilometre-wide meteor which hit east of Mexico 65 million years ago, wiping out the dinosaurs.
Ohio State University scientists who found the crater said the massive Antarctic crater could explain the global extinction in the Permian-Triassic period when all animal life on Earth died out, clearing the way for the dinosaurs.
The massive impact probably broke up the ancient continent of Gondwanaland, pushing Australia out on its long drift north to its current position. The landmass that became India shot off first, while Africa and South America broke off later.
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