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To understand the mantle – the largest layer of rocky body of the earth – scientists drill deep core from the ground.
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Scientists drilled the deepest core and regained serpentinized peridotitis, which is formed when salty water interacts with the mantle rock.
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Although it is the deepest to the mantle scientists ever drilled, the mission did not reveal the boundaries of the pristine mantle outside Mohorovichić irregularity or moho.
If you want to understand the geology of our home planet, studying mantle is a great place to start. By separating the planet’s rocky crust and the molten outer core, the mantle is 70 percent of the Earth’s mass and 84 percent of its volume. Despite its great influence on the planet’s geological processes, scientists have never directly selected rocks from this extremely important geological layer.
And this is understandable, especially when you think the crust is on average between 9 and 12 miles. Fortunately, there are deviations in this average – the world where the crust is actually incredibly thin, and the failure reveals the mantle through cracks. One such area is the Central Atlantic withers, especially near the submarine, called the Atlantis array.
There is an area known as a lost city on the south side of this array – a hydrothermal field, whose ventilation fluids are very alkaline and rich in hydrogen, methane and other carbon compounds. This makes this area a particularly convincing candidate to explain how early life has evolved on Earth. It also contains mantle rocks, which interact with sea water in the process called “serpentinization”, which changes the structure of the rock and gives it a green, marble appearance.
2023 May It is here, 800 meters south of this area Joides Resolution, A 470-foot-long research vessel of the US National Science Foundation was pulled by a 1,268-meter core, which contains the abyss peridotitis, which are the main rock forming the upper mantle. The results of the study were published In the magazine Science;
Although this makes this particular drill core in the deepest example of the mantle, going to a deep rock was not the purpose of this record expedition.
“We were planning to drill only 200 meters, because they were the deepest people who ever managed to drill Mantle Rock,” said Johan Lissenberg, Petrologist and Co-Scientist at the University of Cardif, a co-author of the study, said. Nature; He said the drilling was so easy that they progressed three times faster than usual. Finally, the team drove a stunning 1,268 meter and stopped only because of the limited mission operation window.
Andrew McCaig-Studyn co-author and researcher of Leeds University-Ferion from an article from an article from an article The conversation Based on the preliminary analysis of the rock, the core composition contains a variety of peridites called Harzburgy, which is formed by the partial dissolution of the mantle rock. It also contained rocks known as gabblas, which are coarse algae rocks. Then both of these rock reacted chemically with sea water, changing their composition.
Although this nucleus is an incredible opportunity to learn more about the mantle of the Earth, as well as a detailed look at the geological substrate on which the lost city is resting, the mission has not filled the “great challenge” to move Mohorovichić continuity. Otherwise known as Moho, Mohorovichić’s inequality is recognized as the true boundary between crust and untrue mantle.
Future missions could continue to explore this site near the Atlantis array, but unfortunately those missions do not cover Joides Resolution– NSF refused to finance more main drilling in 2024. As scientists finally knock on the door of the geological layer of the Earth, the future of such drilling missions is now unclear.
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