Beijing time on November 24th According to the Science Daily, the latest findings of the Johns Hopkins University research team revealed long-unknown details about the depths of the earth's underground carbon, and hinted that this underground carbon affects life on Earth. Possible ways of history. The research team also proposed a novel theory about how diamonds are formed in the Earth's mantle.

Scientists did not know that these high concentrations of readily soluble carbon species exist in the depths of the Earth.

In the past few decades, although scientists have become more comprehensive about the vital role of carbon in the earth's crust, they know little about the nature of carbon in the earth's deep underground. Using the model established by Johns Hopkins University geochemist Dimitri Sverjensky, Vincenzo Stagno and John Hopkin of the Carnegie Institution of Washington Fang Huang, a graduate student at the University of Science, first calculated the carbon content and type of fluid in the fluid 100 miles below the surface of the Earth, where the temperature was as high as 1149 degrees Celsius.

In this article published in the journal Nature Geology, Sverjeski and his team demonstrated that in addition to the already recorded carbon dioxide and methane in the depth of the subduction zone, there is a very rich one. A series of organic carbon species that may or may trigger the formation of diamonds and may even become microbial foods.

“These deep underground fluids may transport the basic building blocks needed for life to the surface of the earth, which is an exciting possibility,” said Sverjeski, a professor at the School of Earth and Planetary Sciences. "This may be the key to the origin of life."

Sverjeski's theoretical model, called the Earth's deep water model, allowed the team to determine the chemical composition of the fluid in the Earth's mantle, which flowed out of the descending Earth's plate. Some fluids that balance minerals in the mantle peridotite contain carbon dioxide and methane that scientists have expected. But those fluids that balance the diamond and eclogite minerals contain dissolved organic carbon species, which contain acetic acid like vinegar.

Scientists have not previously known the presence of these high concentrations of readily soluble carbon species deep in the Earth, suggesting that they help transport a large amount of carbon in the subduction zone to the superimposed mantle wedge, where carbon may alter the mantle and affect carbon. The cycle, carbon will eventually return to the Earth's atmosphere.

The team also believes that these mantle fluids containing organic carbon species may have created diamonds in previously unknown ways. Scientists have long believed that the formation of diamonds stems from chemical reactions that begin with carbon dioxide or methane. These organic species provide a range of different starting materials and eventually create gemstones. The study is part of a 10-year global project called the Deep Carbon Observatory, which aims to further understand carbon on Earth. The study was funded by the Alfred Sloan Foundation.

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