Australian Continent

Australian Continent

Continents collided to form Australia, research shows Northern Australia was once a separate landmass prior to colliding into Central Australia and forming a wedge underneath it according to Australian researchers.

Kate Selway, a researcher at the University of Adelaide and her colleagues are studying the collision that is estimated to be 1.64 billion years old.

"If you looked south from Alice Springs before that time, you would have seen an ocean",says Kelway.

Researchers believe that the Australian continent formed from pieces of land from other continents. Research from study of different rock types, ages and chemistry indicate that long before eastern Australia, the northern, western and central parts of the continent were separate landmasses.

But Selway says that there is no way of determining exact boundaries of these plates or how they came to collide in the first place. This difficulty is aggravated by the fact that the boundary lines are largely covered by dirt and sediment.