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Earth Recycling Turning Ocean Floor into Diamonds

According to new research, decomposition of sea beds for millions of years makes diamonds. The new research, under the leadership of Macquarie University’s geoscientists in Sydney, Australia. Most diamonds are form in a similar way. Whereas, rest is the product of pressurized crystallization of carbon in the depth of mantle. The scientists were able to come to the conclusion, as a result of, analysis done on the salt trapped in the diamonds.

The study finds answer to a long-due question – “How diamonds are formed?” According to Michael, the lead author that till now it was just a theory that salt in the diamonds came from the marine waters. However, there was no concrete proof or any data to support the theory.

How Scientists were Able to Distinguish Marine Diamonds from Regular Diamonds?

High pressure and extreme temperature of the mantle results in formation of gem diamonds. Volcanic eruptions of kimberlite, a special kind of magma, brings them to the surface. It takes millions of years to form these diamonds, and peer pressure results in their formation.

On the other hand, the fibrous diamonds formed under sea beds are cloudy and jewelers prefer them less. In order for these diamonds to form the optimum temperature and pressure is at least 200 km below the earth’s surface. Figuratively, the pressure required for these diamonds to form is at least four gigapascals at the temperature of 800 degrees to 1100 degrees Celsius.

Team members at the Goethe Universität Frankfurt in Germany and Johannes Gutenberg Universität Mainz performed the research. It included sediment samples in vessels of rocks called peridotite. The scientists replicated the pressure and temperature conditions in a controlled environment and observed.

The results resembled salts traces in diamonds found in the mantle beneath the sea beds.

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