Four samples were collected from a vertical sequence with No 1 at the base straddling contexts 0089 and 0066, No 2 straddling contexts 0066 and 0021, No 3 in the centre of context 0021, and uppemiost No 4 between contexts 0021 and 0065.

The four slides were described following the international system for thin section description (Bullock et al., 1985). Slides No 1 and 2 were virtually identical whilst slides 3 and 4 were variations on these. It thus seemed best to provide a full description of slide No 1 which is also applicable to No 2 and then only to describe the differences between these two pairs of slides which are of a particular interpretational value.