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However, although carbon is a common element on the ground, it is very rare in the interior of the Earth. Through the analysis of the solar spectrum and the meteorites that fell to the earth, it is speculated that the most chemical elements that make up the earth are oxygen, followed by silicon, aluminum and iron. These four elements account for 87% of the total mass of the Earth; if combined with the three elements of calcium, sodium and potassium, they account for 96%. The remaining 4% is all other elements including carbon.
In addition, the elements that make up the Earth, the more massive the elements tend to gather in the center of the Earth. Carbon is a relatively light element that is concentrated near the surface of the earth, so there is essentially no carbon in the depths of the earth. Professor Yagi Katsuhiko, who specializes in the deep structure of the Earth, said at the Institute of Physical Properties of the University of Tokyo, Japan: "Since the earth was born 4.6 billion years ago, the carbon present inside is extremely rare. Therefore, there are not many diamond-forming raw materials inside the earth. â€
On the other hand, scientists also know from isotope analysis that at least part of the materials constituting diamond are carbon left by organic matter. This means that the remains of plankton (animals and plants) deposited on the seabed hundreds of millions to billions of years ago are brought from the sedimentary layer to the interior of the earth as the tectonic plates move, where it is possible to form Diamond.
The raw material of diamond is plankton in ancient times?
Ultra-thin cutting chip manufacturers believe that carbon is a common element. Animals and plants, even in the air, contain a lot of carbon. Our body is no exception, and there are also a lot of carbon atoms. The human body contains approximately 18% carbon.