In this cropped view from sol 626 notice that the liquid seepage around the drilling area is still showing with no signs of freezing over or drying out.
Also, if the soil contained frozen water then it might have melted when exposed to the heat of sunlight. I do not believe we are looking at true "rocks" but more like concretions or frozen mud.
Before
After
-- Edited by Macten on Monday 12th of May 2014 05:53:42 PM
My initial thoughts for the disturbance where that it was due to the vibration of the drilling, we already know the surface dust is very fine as can be seen by the dusting on the rovers and by the wind driven dunes, we also have to realise that the gravity on Mars is much lower than it is here on Earth (about 62% lower) so that too would effect soil movement.
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Great find Timewarp, I suspect the liquid is coming from the soil itself and not the pipe like objects you mention, in many images we see signs of recent running water, and the fact that in this instance the liquid has run away from the bore holes disputes the claims that any liquid would instantly evaporate or refreeze as soon as it reached the surface, we have also been lead to believe that any water under the surface layer would be frozen, but in this case it now seems unlikely that analogy is true as can seen from the bottom bore hole as there would not be enough friction from the drill to melt any ice.
__________________
"Creating a fiction when stating a fact destroys the credibility of the truth one are trying to convey"