Volcanic cones on Mars tell a tale of ice and fire

[Admin]

A study of volcanic cones near the equator on Mars is challenging what scientists previously knew about when and where water flowed on Mars.

Volcanic cones on Mars tell a tale of ice and fire : Read more

 

[Torbjorn Larsson]

As context, Curiosity has found the first evidence that open water existed on Mars (roughly 3.7 billion years ago):

The rover found small undulations like those seen in sandy lakebeds on Earth.

They would have been created by wind-driven water moving back and forth across the surface. The inescapable conclusion is that the water would have been open to the elements instead of being covered by ice.

The ripple height of 6 mm and 4 to 5 cm separation tell us that the lake was shallow, possibly even less than 2 meters deep.

One of the sets of ripples known as the Prow outcrop was found in an area that was once wind-blown dunes. The other set was found nearby in the sulfate-rich Amapari Marker Band of rocks.

The two regions come from slightly different times, telling us that the warm, dense atmosphere occurred multiple times or at least for a long period of time.

https://www.sciencealert.com/curiosity-finds-evidence-of-open-water-on-ancient-mars