Geologists say fragments suggest North Atlantic Craton was 10 per cent bigger than previously thought.
Diamond-encrusted rock samples discovered on a Canadian island come from an ancient continent that was probably 10 per cent larger than has always been thought, geologists say.
The fragments of the North Atlantic Craton – a vast land mass which stretched from Europe to North America – were found on Baffin Island.
Scientists stumbled on them as they sifted the area for diamond samples.
The fragments, bearing a mineral signature matching other portions of the North Atlantic Craton, are thought to be some 150 million years old.
“Finding these lost pieces is like finding a missing piece of a puzzle,” Maya Kopylova, a geologist with the University of British Columbia said in an article published on the institute’s website.
She added that such evidence of the ancient crust, which has also previously been found in Scotland and Greenland, was much sought-after.
The samples were taken from deep below the Chidliak Kimberlite Province on the south of Baffin Island.