This series of images have been provided by the Malin Space Center on their public web site, as part of a collection of more than 50.000 pictures originating from the Mars Global Surveyor satellite's camera.
This picture shows layered outcrops of Far West Candor Chasma.
Recent signs of liquid water in this layer of liquid percolating out of the ground could have created these channels, which are each more than half a mile (1 kilometer).
This fan-shaped delta seems to flow out, covering up sand dunes. This indicates to scientists that the possible water-influenced features are very young, perhaps less than 1,000 years old. In my opinion it might then just as well be 0 years old.
In this image, the rocks are so sharp, and the surface so free of sand or sediment, that scientists believe it may have formed as recently as within the past several years.