Ancient Mars Hosted Habitable Environments: Study

    • Dheeraj.Jangra@timesgroup.com
    • Publish Date: May 27 2016 2:32PM
    • |
    • Updated Date: May 27 2016 2:32PM
Ancient Mars Hosted Habitable Environments: Study

Scientists have found evidence for widespread buried deposits of iron- and calcium-rich carbonates on Mars, which suggests that the red planet once hosted habitable environments with liquid water.


"Identification of these ancient carbonates and clays on Mars represents a window into history when the climate on Mars was very different from the cold and dry desert of today," said Janice Bishop of the SETI Institute in the US.

Carbonates beneath the surface of Mars points to a warmer and wetter environment in that planet's past. The presence of liquid water could have fostered the emergence of life.
The fate of water on Mars has been energetically debated by scientists because the planet is currently dry and cold, in contrast to the widespread fluvial features that etch much of its surface.

Scientists believe that if water did once flow on the surface of Mars, the planet's bedrock should be full of carbonates and clays, which would be evidence that Mars once hosted habitable environments with liquid water.

Researchers have struggled to find physical evidence for carbonate-rich bedrock, which may have formed when carbon dioxide in the planet's early atmosphere was trapped in ancient surface waters. They have focused their search onM Mars' Huygens basin. 

This feature is an ideal site to study carbonates because multiple impact craters and troughs have exposed ancient, subsurface materials where carbonates can be detected across a broad region, researchers said.

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