EdgI think what you are seeing is a pr...

Edg

I think what you are seeing is a processing artifact. As I explained in reply #170 I reduced the shadows by 50% in photoshop to see inside the shodows. This left the "shadow line" which is not real but is an artifact.

I think that chemistry is happening at the bottom of the trench but the "shadow" line has nothing to do with it.

Sorry for perhaps misleading you and others but the intent was to show that the sublimation of the ice was real which I think I demonstrated before anyone else on this blog and perhaps before the Official information on the same images came out.

I think that subsequent images are showing that there is a dynamic process going on. Ice is sublimating and frost is being formed on dark surfaces. There also seems to be cases where there is some wetting of the soil. In addition clumps of soil particles are drying out which indicates that the tega oven process my not b e able to find components of the soil which were there at the time of sampling.

Winston