Canadian scientists have found a fraction of an historical continent, suggesting that it was 10% bigger than beforehand thought.
They had been finding out diamond samples from Baffin Island, a glacier-covered land mass close to Greenland, after they seen a remnant of North Atlantic Craton.
Cratons are historical, secure components of the Earth’s continental crust.
The North American Craton stretched from present-day Scotland to North America and broke aside 150m years in the past.
Scientists came upon the most recent proof as they examined exploration samples of kimberlite, a rock that usually comprises diamonds, from Baffin Island.
“For researchers, kimberlites are subterranean rockets that pick up passengers on their way to the surface,” University of British Columbia geologist Maya Kopylova mentioned. “The passengers are solid chunks of wall rocks that carry a wealth of details on conditions far beneath the surface of our planet over time.”
Ms Kopylova and her colleagues says the pattern bore a mineral signature that matched different parts of the North Atlantic Craton.
“Finding these ‘lost’ pieces is like finding a missing piece of a puzzle,” Ms Kopylova is quoted as saying in an article published by the University of British Columbia’s website.
The samples had been taken from deep under the Chidliak Kimberlite Province in southern Baffin Island. Previous reconstructions of the Earth’s plates had been primarily based on shallow rock samples fashioned at depths of 1 to 10km (six miles).
Ms Kopylova mentioned the invention provides about 10% to the identified measurement of the craton. “Our knowledge is literally and symbolically deeper,” she mentioned.