re: It's more likely sulfuric acid flowed recently on Mars than H20.
And where were you when scientists confirmed the the Meridiani
salt deposits were formed in an acidic body of water a long time ago, huh?
Most of the salts in the Meridiani region are sulfur or chlorine compounds...
And that applies to the Columbia hills deposits, too.
Ooops!...That means both HCL and HSO4 were present at one time on Mars.