The surface of Mars has always captivated the scientists, and they are researching about the red planet since a very long time. As we know, the red planet is completely filled with surprises, so researchers are completely dedicated to unveiling its hidden secrets. They have claimed that ancient Mars was habitable or might be habitable in future and it might contain water.
Earlier in this month, Scientists had successfully detected boron which hinted about the possibility of life in ancient times of Mars. Now they have discovered something that strengthens their claim of the habitability of Mars in ancient times. A recent study has revealed that the surface environment of Mars supported liquid water around 3.5 billion years ago.
It is discovered that there is a place in Mars called the Aeolis Dorsa which has got some mind-blowing, densely packed river deposits ever present on the planet. The deposits could be seen through satellite images as they have already gone through a process called ‘topographic inversion’ in which the deposits had once filled the topographically lower river channels, and now these have been converted into ridges on the surface of Mars.
B T Cardenas along with his colleagues from the Jackson School of Geosciences in the U.S, detected fluvial deposit stacking patterns as well as changes in sedimentation styles controlled through a migratory coastline. And all this was done with the help of high-resolution images and topographic data collected from the cameras present on the orbiting satellites. Also, they figured out the river-paleo transport direction for a subset of those ridges.
Both these measurements indicated that the river deposits were once filled with incised valleys. In our planet, the incised valleys are generally cut and filled during rising and falling of sea level and according to the researchers similar type of rising and falling water levels inside a large water body might have resulted in the formation of paleo-valleys in the fluvial deposits area.
Researchers said that cross-cutting relationships were observed at the valley-scale, which hinted about the multiple episodes of water level rise and fall, each of them well over 50 meters, which is considered similar to that of the eustatic sea level changes on the Earth.