Arctic "Rosetta Stone": New Discovery Provides Pristine Snapshot ...

Scientists have discovered a new window into the Earth's violent past. Geochemical evidence from volcanic rocks collected on Baffin Island in the Canadian Arctic suggests that beneath it lies a region of the Earth's mantle that has ...

Source: http://www.dailygalaxy.com/my_weblog/2010/08/arctic-rosetta-stone-new-discovery-provides-pristine-snapshot-of-earth-billions-of-years-ago.html