Scientists in Australia believe that continental collision and stretching is necessary for creating these colorful minerals.
created gaps in the Earth’s that enable the magma carrying diamonds used to rise to the surface about 1.8 billion years ago.
“While the continent that would become Australia didn’t break up, the area where Argyle is situated was stretched, including along the scar, which created gaps in the Earth’s crust for magma to shoot up through to the surface, bringing with it pink diamonds,” study co-author and Curtin University geoscientist Hugo OlierookArgyle is located right where the rest of northern Australia and the country’s Kimberly region crashed together and that collision created a scar in the Earth that will never...
The team used laser beams on rocks from the Argyle deposit and found that the rocks are 1.3 billion years old, or about 100 million years older than they previously believed. “Knowing the Argyle volcano’s age, at 1.
“Most diamond deposits have been found in the middle of ancient continents because their host volcanoes tend to be exposed at the surface for explorers to find,” said Olierook. “Argyle is at the suture of two of these ancient continents, and these edges are often covered by sand and soil, leaving the possibility that similar pink diamond-bearing volcanoes still sit undiscovered, including in Australia.
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