Saturday, March 13, 2010

World's Oldest Rivers Mapped Under Huge Desert Dunes

The Simpson desert's fabled dunes block its underground water channels from remote sensing (Image: visionandimagination.com/Getty)

From New Scientist:

A network of ancient rivers and streams that once flowed beneath Australia's Simpson desert – famed for its dune fields – has been mapped in a new study. The map could lead the way to valuable minerals and water resources in this drying continent.

Michael Hutchinson and John Stein of the Australian National University in Canberra extracted data from previous ground surveys to map an ancient river system 35 metres below the surface of the desert. They think the channels are among the world's oldest at 50 million years old, when the now barren land would have been lush and well watered.

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