Ancient diamonds – which are older than the Moon – have been discovered 410 kilometers below the Earth’s surface hidden in the planet’s mantle. The planets mantel is the mostly-solid bulk of Earth’s interior. The mantel lies between Earth’s dense, super-heated core and its thin outer layer, the crust. The mantel is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth’s total volume!
The rocks are thought to have been sitting close to the Earth’s core for more than 4.5 billion years until a volcanic eruption in Brazil caused them to move closer to the surface.
The discovery has proven to be a very exciting one and researchers believe the diamonds can help them learn more about the Earth’s internal structure.
They were also able to extract helium gas from 23 super-deep diamonds in Juina, Brazil.
Super-deep diamonds can provide scientists with more information about how the Earth was formed as they carry impurities from many years ago.
The scientists were able to work out that the diamonds had come from an area 410 to 660 kilometers below the Earth’s surface! They are believed to have started out in a reservoir sitting either around or underneath this area.
The researchers are still unsure about the size and make up of the reservoir, but the recent discovery has allowed scientists to make some welcomed progress.