Canadian diamond samples show the size of an ancient continent

James Marshall
March 25, 2020

Changing through diamond examination samples from Baffin Island, Canadian scientist has acknowledged a new Remnant of the North Atlantic Craton- a primeval part of earth's continental crust. "It was most recently part of the super continent Pangaea, which started to breakup about 175 million years ago with the southern rifting of Gondwana, and then more recently the opening of the North Atlantic about 50 million years ago split it further".

"For researchers, kimberlites are subterranean rockets that pick up passengers on their way to the surface", University of British Columbia rock hound Maya Kopylova stated.

"We interpret this similarity as indicating the former structural coherence of the cratonic lithosphere of the Hall Peninsula Block and the NAC craton prior to subsequent rifting into separate continental fragments".

The way geologists tied all the pieces together was effortless. Adjoining archaic cratons in North Canada, Northern Ontario and Nunavut possess different mineralogy.

'Finding these "lost" pieces is like finding a missing piece of a puzzle'.

The NAC was present as a single continent before it split into many fragments by emerging seas and oceans, Professor Kopylova told MailOnline, and the same process is now splitting the Arabian peninisula from East Africa.

Geologists in Canada have found that an ancient continent was 10 percent larger than previously estimated after analyzing rock samples dug up during diamond exploration work. Scientists stumbled on them as they sifted the area for diamond samples. They were studying rock samples of kimberlite, which were formed millions of years ago, 93 miles to 250 miles below Earth's surface. Those so-called "passengers" represent a solid bunch of wall rocks.

While previous estimates of the size and location of the Earth's plates were based on relatively shallow samples taken up to 10 km underground, this study examined rocks extracted from a depth of 200 km.

These samples from the Chiliak Kimberlite Province were provided by Peregrine Diamonds that was acquired by De Beers in 2018 which is an global diamond exploration company.

Professor Kopylova said that the samples are now loaned out to the University of British Columbia by the company for research purposes.

This article has been adapted from its original source.

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