It took a decade to develop the map.
A new map created over the last decade using data from ESA’s Mars Express Observatoire pour la Mineralogie, l’Eau, les Glaces et l’Activité instrument and NASA’s Mars Reconnaissance Orbiter Compact Reconnaissance Imaging Spectrometer for Mars instrument shows water-related mineral deposits across the planet, according to aIn particular, it shows the locations and abundances of aqueous minerals. What took the scientists by surprise was the impressive abundance of these minerals.
“I think we have collectively oversimplified Mars,” said Carter. So far, planetary scientists have tended to think that only a few types of clay minerals on Mars were created during its wet period, which is far from the truth the map reveals. While it’s possible that many of the Martian salts did form later than the clays, the map shows many exceptions where there is intimate mixing of salts and clays and some salts that are presumed to be older than some clays.“The evolution from lots of water to no water is not as clear cut as we thought; the water didn’t just stop overnight. We see a huge diversity of geological contexts so that no one process or simple timeline can explain the evolution of the mineralogy of Mars.
France Dernières Nouvelles, France Actualités
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