. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. EXCAVATIONS AT DIE KELDERS, SOUTH AFRICA 179 Only eighteen of these artefacts were found at the site. They were distri- buted fairly evenly through the lower levels up to and including layer 7. After that only two were found, in layer 4 (Table 17). Little is known about the use of such implements which have also been found in the excavated deposits from Nelson Bay Cave (Deacon, J. 1978: 91-92) and the small DK 1 sample is not considered to contribute any new information. Single and multi-flaked cobbl
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. EXCAVATIONS AT DIE KELDERS, SOUTH AFRICA 179 Only eighteen of these artefacts were found at the site. They were distri- buted fairly evenly through the lower levels up to and including layer 7. After that only two were found, in layer 4 (Table 17). Little is known about the use of such implements which have also been found in the excavated deposits from Nelson Bay Cave (Deacon, J. 1978: 91-92) and the small DK 1 sample is not considered to contribute any new information. Single and multi-flaked cobbles show signs of utilization resulting in the removal of one or more flakes (Fig. 39). These stones, which are almost exclu- sively of quartzite (96,7%, Table 14), though not showing systematic removal of flakes seem to augment recognizable cores as a major source of untrimmed flakes. By adding multi-flaked cobbles to cores, the previous low ratio of cores to flakes, ranging from 1 : 19 in layer 2 to 1 : 103 in layer 4, is raised to 1 : 7 for layer 2 and 1 : 8 for layer 4. This does not, however, preclude the use of single- flaked cobbles and occasional lower grindstones for flake production, which would further raise the ratio. The use of flaked cobbles is, therefore, regarded as being in keeping with the informal nature of the stone industry at DK 1 which is characterized by the use of any suitable stone to supply required flakes. Lower grindstones are flat-surfaced, partly rounded stones varying in size from 11 X 22 cm to 28 X 50 cm. They bear smoothed concave surfaces or grooves as a result of deliberate and repeated use of the stone for Fig. 39. Multi-flaked cobble, quartzite, layer Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
