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The diamonds have been discovered by analysing seismic information – primarily sound waves travelling via the Earth triggered by ground-shaking forces.
Dr Ulrich Faul, a analysis scientist at MIT, defined that considered one of diamond’s many particular properties is the velocity at which sound waves journey via the fabric.
“Diamond in some ways is particular,” Dr Faul stated. “Considered one of its particular properties is that the sound velocity in diamond is greater than twice as quick as within the dominant mineral in higher mantle rocks, olivine.”
Sadly for diamond hunters, the minerals are buried greater than 160km (100 miles) beneath the Earth’s floor – far deeper than any human drills have ever reached.
Dr Faul and his workforce found that sound was transferring a lot sooner than it may have been anticipated to inside sections of rock often called cratonic roots.
Cratons are the oldest sections of rock beneath that normally lie beneath continental tectonic plates, and their roots – formed like inverted mountains – stretch as much as 200 miles beneath the Earth’s floor.
The brand new examine means that as much as 2% of those roots could also be composed of diamond, which they are saying would imply there may very well be a couple of quadrillion tons (that is 15 zeroes) of diamond scattered as much as 150 miles beneath the floor.
This makes it impossible that the diamond may very well be retrieved with present know-how.
The deepest drill ever made by humanity is the Kola Superdeep Borehole in Russia, which took 20 years to succeed in a depth of 12km (7.5 miles) earlier than being deserted with the collapse of the Soviet Union.
The analysis from MIT and different universities revealed within the journal Geochemistry, Geophysics, Geosystems explains how the scientists reached their conclusion.
Dr Faul defined: “[Cratons] are like items of wooden, floating on water. Cratons are a tiny bit much less dense than their environment, so they do not get subducted again into the Earth however keep floating on the floor.
“That is how they protect the oldest rocks. So we discovered that you just simply want 1% to 2% diamond for cratons to be secure and never sink.
“It is circumstantial proof, however we have pieced all of it collectively.
“We went via all of the completely different prospects, from each angle, and that is the one one which’s left as an affordable clarification.”
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