Scientists have found in the bowels of the Earth traces of other planets

2017-12-05 20:02

Scientists have found in the bowels of the Earth traces of other planets
The study of deposits will help to understand how the Earth looked in the first moments of his life.

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According to scientists, a newborn Land “ate” some of the nuclei of the planets after its collision with Tai, the ancestress of the Month, reports Rus.Media. Traces of these cosmic bodies, the geologists found in the oldest rocks of the planet in Greenland.

“We built a computer model of how the newborn Earth has collided with other celestial bodies, and how their metals and silicates was mixed with the mother planet at the time, which we call the “era of the late accretion”. These calculations indicate that the depths of the Earth contain far more of this matter than is believed by our colleagues. This greatly changes the history of its evolution,” said Simone MArchI (Simone Marchi) from the southwest research Institute in Bodera (USA).

Scientists believe that the Earth has encountered many nuclei of the planets, a significant part of the matter which now lurks in the bowels of our planet. They came to this conclusion by creating a computer model of the newborn Solar system, which was populated not only the Earth and Moon, but many planetesimals, “dead” embryos of planets that periodically collided with our planet and other celestial bodies.

Today, scientists believed that the Earth had to go through dozens or even hundreds of such collisions. Most of the matter of such nuclei of the planets was supposed to evaporate into space or be discarded during the collision with the Ground, resulting in only 0.5% of its weight falls on the matter of other worlds.

The calculations of the team of MArchI have shown that it is not. If even a small part of these planetesimals was big enough, more than 1500 kilometers in diameter, then the Earth’s interior consist of approximately 2.5-3% from rocks formed in the depths of other planets.

According to geologists, the strength of these collisions was high enough that the crust and the mantle is completely melted and mixed with the “high” species, but it was enough to ensure that the fragments of the former nucleus of the planet penetrated to a greater depth.

This means that in the depths of the planet to meet region with abnormal proportions of isotopes of various metals such as tungsten and hafnium, as well as the unusual silicate rocks, the analogues of which do not exist anywhere else on the planet. How do you think MArchI and his colleagues, their deposits are found in Greenland, in the so-called Zelenika Janome zone.

Scientists believe that the study of these deposits will help us to understand how many other planets have “eaten” the Earth and how it looked in the first moments of his life.