Yes, Horton, please, I'd love to see a right image of the photo in post 91.
It seems to me the red is eroded material derived from the blocks. The large block at top left in the photo from reply 52 seems to show an exfoliation pattern. Note how the individual layers are being exposed/stripped one after the other. Debris from this removal has collected below the block. This debris material would correspond to the red material in post 91.
The grey material is probably fine grained dust deposited by the the wind, as it not only lies on top of the red material but also on the blocks. But is this the same fine grained material that could mix with frost to create our pasty flows? Any colour pictures of pasty flows?
