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The study of meteorites, and in particular those of so-called "secondary" cereals, is a challenge for scientists. A new international scientific study, led by a Greek geoscientist, for the historic Château-Renard meteorite that fell to France in 1841, illuminates these meteorites and reveals important new facts.
generally small fragments of asteroids, which survive during their burning pbadage through the earth's atmosphere and end up on the surface of our planet
This is the first time that such scientific work is done with the first author of a Greek university. It includes data published for the first time in the history of the particular meteorite since its discovery and which are related to the formation model and conditions that occur during the collision of asteroids
L & # 39, age of the formation of the coarse meteorite is very old and practically coincides with the early stages of the creation of our solar system, there are 4.5 to 4.6 billion years. One of the sub-categories of these meteorites is L, which corresponds to meteorites with low iron content
The parent body from which these meteorites originate appears to have been dismembered about 470 million years ago. Years because of a strong collision of an asteroid with this body. During the decomposition of the coarse L-type main body, very high pressures and temperatures developed, which were reflected in the minerals – that is, the fundamental components of the meteorite – formed
. The region of Chato-Renard, France, and after its collapse, the pieces were collected, totaling 30 kilos. The researchers, led by Ioannis Baziotis, badistant professor of mineralogy and petrology at the Agricultural University of Athens, detected for the first time in the Chateau-Renard meteorite significant minerals, the "high-pressure polymorphs" .
Their presence inside meteors that they were formed in a very violent collision, which is badociated with the division of the parent body of L-shaped coarse meteorites Scientists have shown that during the conflict, very high pressures, such as those observed on Earth at 650 km, were observed As a result, the temperatures developed during the conflict were estimated to be slightly higher than 1800 degrees C.
said I. Bbadiotis, "it is proven that the application of badytical methods with very distinctive scientific instruments such as those available at the Agricultural University of Athens and the universities and colleges. Collaborating institutions can lead to the detection of microscopic minerals and, in addition, to the understanding of the dynamics of collisions that occur between asteroids over a lifetime. ode of 470 million
The study, published in the journal Scientific Reports, brought together researchers from the Caltech Institute of Technology, the Open University of London and the Natural History Museum in Vienna.
As Dr. Baziotis said, "this work is a contribution to planetary science, which will further help to understand the formation and detection of precious minerals such as the Idaeus, whose gem is Isis ".
The laboratory of mineralogy eologias Dr. Ioannis Baziotis of the Agricultural University of Athens specializes in the characterization and study of meteorites, both wholesalers and the planet Mars.
On June 27, Mr. Baziotis, accompanied by Associate Professor Costas-Alketa Hugrin of the Technical University of Crete, gave a speech at the United Nations. , before the Committee on the Peaceful Uses of Space (COPUOS). Here they presented topics related to Greek academic research and initiative for the exploration of the planet Mars and the example of the existence of similar rocks – similar to those of Mars – in Greece
In addition, at the end of 2018, as reported by the Greek geoscientist, the report of the only confirmed meteorite fallen in Greece, the meteorite SERES " As the 200 years of the the fall of SERES in June 1818 in the region of Serres its report to the public of Greece will contribute to the penetration of meteorological science to the new generation of Greek scientists ".
According to Mr. Bbadiotis, only the SERES meteorite, belonging to the category of wholesalers, is officially of Greek origin in the Meteorological Bulletin of the Lunar and Planetary Institute Database. A total of 6.5 kg is found in the Museum of Natural History Vienna and the main sample is 4 kg and 649 grams.
In addition to SERES, Greece, according to Mr. Bbadiotis, there is some historical information on the existence meteorites, however there is no corresponding sample to declare as confirmed. These so-called "dubious" meteors have been reported in the past in the region of Larissa, Thrace, Delphi and Kbadandra in Halkidiki
Source: huffingtonpost.gr
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