Scientists from the University of Wollongong have found that kimberlite eruptions raise diamonds from the depths of the Earth.
The scientific discovery was reported in the journal Nature Geoscience. According to scientists, kimberlite eruptions occur due to giant heat columns emanating from a depth of 2900 km, near the core of our planet.
They leave behind diamond deposits in the form of a “tube” in the earth’s crust, and such a process has happened hundreds of times in the history of the Earth over the past 200 million years. Similar eruptions have been found around the world, including 788 in Canada, 158 in South Africa, 71 in Angola, and 70 in Brazil.
In the 1980s, scientists learned that kimberlite eruptions could be associated with small mantle plumes that develop between the mantle and the core. Thanks to the supercomputer, the researchers were able to build three-dimensional geodynamic models of global mantle convection over a billion years.
It turned out that the very deep layers of our planet are connected to the surface with the help of wide mantle upwellings – ascending hot flows, which explain most of the kimberlite eruptions over the past hundreds of years.
With the help of the model, scientists visually simulated the eruption of kimberlites in Africa, Brazil, Russia, and partially in the USA and Canada. In addition, they were able to predict previously undiscovered similar eruptions in East Antarctica and on the Yilgan cardboard in Western Australia. Lenta.ru .
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