I wouldn't be surprised as we move uphill that we find a section of the rock, in fact, that was modified in a shallow open-water environment. We haven't found the smoking-gun evidence for that yet.

Ray Arvidson

Related Quotes

The rocks in the Columbia Hills are nothing like the basalt on the plains. Water was involved in practically every one that we've seen so far.

— Ray Arvidson

The rocks in the Columbia Hills are nothing like the basalt on the plains, ... Water was involved in practically every one that we've seen so far.

— Ray Arvidson

Water was involved in practically every one we have seen so far.

— Ray Arvidson

It all pretty much says Mars was a place, particularly early in time, where liquid water was abundant at or close to the surface.

— Ray Arvidson

We're finding abundant evidence for alteration of rocks in a water environment.

— Ray Arvidson