Table 9.
Size of raw material (l. = length; w. = width; t. = thickness) according to technological categories
| Raw material | Flysch chert | Nodular chert | Radiolarite | ||||||
|---|---|---|---|---|---|---|---|---|---|
| l | w | t | l | w | t | l | w | t | |
| Flakes | n = 241 | n = 28 | n = 4 | ||||||
| Min | 7.7 | 8 | 2.3 | 5.3 | 7.4 | 1.9 | 14.7 | 12.8 | 6.1 |
| Max | 68.1 | 56.5 | 25.5 | 46.4 | 32.9 | 15.4 | 25.2 | 22.9 | 10.7 |
| Mean | 25.0 | 21.5 | 9.8 | 18.8 | 18.0 | 7.5 | 18.4 | 19.0 | 7.9 |
| Ret. flakes | n = 73 | n = 7 | n = 3 | ||||||
| Min | 9.3 | 10.9 | 4.2 | 15.8 | 12.8 | 5.4 | 14.7 | 12.8 | 6.1 |
| Max | 68.1 | 48 | 25.5 | 46.4 | 32.9 | 15.4 | 25.2 | 22.9 | 11 |
| Mean | 28.9 | 23.4 | 11.5 | 26.8 | 21.1 | 11.2 | 18.7 | 19.3 | 8.3 |
| Ret. nodules | n = 100 | n = 15 | n = 9 | ||||||
| Min | 12.1 | 12 | 3.9 | 9.8 | 11.1 | 4 | 11.5 | 14.3 | 5.4 |
| Max | 73.2 | 54 | 30 | 39.1 | 36.3 | 21.2 | 41.8 | 23.6 | 13 |
| Mean | 26.7 | 21.3 | 12.6 | 22.3 | 18.8 | 10.7 | 20.6 | 18.4 | 9.7 |