May 30, 200603:13 PMThe Life
Deserts of the world: Patagonian
May 30, 2006 - 03:13 PMThe Patagonian Desert is situated between the Andes and the Atlantic Ocean in southern Argentina. It is made up of gravel plains and plateaus, covering approximately 260,000 square miles. This is a cold desert (average temperature of 44°F) and there is often frost. Before the Andes mountains were formed from the earth's crust, this area was covered in rainforest... which is why you can see petrified trees in the middle of the desert.
[Image by Jeff Schmaltz, MODIS Rapid Response Team, NASA/GSFC - click thumbnail photo for larger version.]