The measurements were carried out using the Institute's high-resolution ion probe-research instrument
Carbonates are some of the most popular rocks on Earth. They can be found in the mountain ranges of the Dolomites, on the chalk cliffs of the island of Rügen and in the coral reefs of the oceans.
They remove a large amount ofgreenhouse gas CO2, which makes them beneficial to the climate. Unlike modern Earth, during the formation of the pristine Earth, when our planet was hot, there were no carbonate rocks.
The meteorite that fell to Earth in September 2019 was named Flensburg for where it was found. It is classified as a carbonaceous chondrite: a very unusual and rare form of meteorite.
Parent asteroid of the Flensburg meteorite andthe carbonates in it formed only three million years after the formation of the first solid bodies in the solar system. In addition to dating based on the radionuclide 53Mn, the tiny carbonate grains were also examined for their carbon and oxygen isotope composition using the Heidelberg Ion Probe.
Carbonates apparently precipitated fromrelatively hot liquid shortly after the formation and heating of the parent asteroid. Thus, they indicate the earliest period when liquid water appeared in the Solar System.
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