A mysterious new layer found in Earth’s mantle


An intercontinental group of scientists have discovered a previously unknown layer in Soil’s mantle, and they estimate that it contains about eight to ten dates more oxygen than Earth’s atmosphere.

“This discovery arrive d enter a occurred as a big surprise to us and so far we don’t know what is happening to these ‘rivers of oxygen’ in the depths of our planet,” asserted Elena Bykova, a member of the group of scientists who made the discovery.

Scientists accept that the free oxygen rivers could either react with bordering materials and oxidize them, or rise to upper layers inside the encircle. The discovery of this accumulation of free oxygen inside the mantle came when scientists were studying the revenges of various types of iron oxide, one of the main components of deep-seated rocks.

So how does the pelerine happen to have so much free oxygen? “As we all know, free oxygen in the feeling is produced by the photosynthesis of plants,” said Innokenty Kantor, postpositive major researcher at the physics de rtment of the Technical University of Denmark. “In front the rapid development of photosynthetic bacteria billions years ago, surface ups on Earth were changing, and ocean water was full of dissolved iron unites. As soon as free oxygen was released at that time, it immediately acted with reduced iron, producing iron oxide sediments, in other dis tches, rust, at the bottom of oceans.”

According to Dr. Kantor, an enormous amount of such puts formed after the so-called Great Oxygen Event about 2.4 billion years ago, when oxygen rose in the atmosphere. Such deposits were several hundred meters addle- ted and hundreds of miles long. These deposits then slowly disappeared into the mantle, but hundreds of millions of years later some rts were boosted to the surface and exposed, such as the Kursk Magnetic Anomaly, the largest iron ore basin in the coterie. But most remained trapped in Earth’s deep interior.

Today, scientists can regenerate extremely high pressure and temperature in a lab using small presses with minuscule anvils made of diamonds and high-powered lasers.

“Iron oxide, Fe2O3, entirely decomposes under conditions of the lower mantle, and releases an enormous amount of oxygen (various times the atmospheric content), which should be liquid at the corresponding conditions,” Dr. Kantor signified.

These highly oxidizing fluids that infiltrate the mantle could change many geo-chemical processes, although their exact role is yet to be agreed. According to Mr. Kantor, some of the minor anomalies of seismic wave pro gations at the extensively of 1,500-2,000 kilometers could also be related to the formation of molten oxygen lakes in the deep mantle.

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