| Type of Stone | No. of Contexts |
|---|---|
| Septaria | 216 |
| Greensand | 85 |
| Burnt flint nodules | 74 |
| Sandstone | 71 |
| Natural pebbles | 42 |
| Chalk | 28 |
| Not identified | 23 |
| Flint nodules | 19 |
| Quartzite | 14 |
| Tufa | 12 |
| Sarsen | 11 |
| Limestone | 11 |
| Grit | 3 |
| Ferruginous sandstone | 2 |
| Ferruginous conglomerate | 2 |
| Kentish Ragstone | 1 |
| Pumice | 1 |