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Frequencies of raw material types in shaping flakes and in bifacial pieces.
| Layer | Dolerite % | Hornfels % | Quartzite % | Sandstone % | Quartz % | Other % | Indet % |
|---|---|---|---|---|---|---|---|
| RGS, RGS2 shaping flakes (N = 2169) | 63.7 | 27.2 | 4.1 | 2.2 | 1.7 | 0.2 | 0.9 |
| PGS, RGS, RGS2 bifacial pieces (N = 77) | 49.4 | 27.3 | 22.1 | 0 | 1.3 | 0 | 0 |
