Silicification on mars 2019.

Silica, which is found in toothpaste, also plays a role in the formation of fossils, as we know from fossil finds on earth. This happens during a process called silicification. In this process, rock slowly breaks down as a result of natural processes and released silica minerals end up in present water.









Silicification on mars 2019.









This water, containing the minerals, then penetrates the cells of dead organisms, after which it forms a gel. Over time, this gel dries out. This creates a crystalline structure that mimics the internal shape of the organism. When the water has finally completely evaporated, the formed structure can become petrified and a fossil of the organism is created.





Just like on earth, the silica in the Jezero Crater on Mars should also be able to form fossils. At least, if there has been life on Mars, and in that spot.



