The evolution of bone points as hunting weapons in South Africa
Date
2011-06-10
Authors
Bradfield, Justin Sean
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Abstract
The use of formally fashioned bone points as possible components in hunting
weaponry has been seen as a marker of behavioural modernity. Unfortunately, their
interpretation as hunting weapons, up to now, has been based on morphological
analogy with recent hunter-gatherer artefacts. Many studies conducted over the last
30 years have focused on identifying criteria that can be used to establish the function
of stone points. There have been no similar macro-fracture studies conducted on bone
points thought to have been part of complex weapon systems. This study aims to
combine the morphological approach to studying bone points, with macro-fracture
analysis. Macro-fracture analysis has been successfully used to discern pointed stone
tools that were subjected to longitudinal impact, the most likely cause of which is
hunting. This approach was adopted to test whether the same technique is applicable
to bone points and whether the bone points that are found in the archaeological
record, as far back as c. 77 ka ago at Blombos Cave, were used as hunting weapons.
The study involved the replication of a range of bone points that were used in an
experiment designed to cause impact consistent with that of hunting scenarios. The
experiment tested hand-thrust and mechanically projected bone points. The results of
this experiment showed that macro-fractures develop similarly on bone points as on
stone points. The morphological study of bone points from one ethnographic
collection and eight archaeological assemblages, spanning Middle Stone Age (MSA)
and Later Stone Age (LSA) periods, confirmed an earlier observation made in the
Cape – that there may be some degree of patterning in the overall dimensions of bone
points across the landscape. Furthermore, the study showed that all the bone points
from MSA assemblages, with the exception of Blombos Cave, fall within the size
range of ethnographic arrow tips. The results of the macro-fracture analysis on
archaeological and ethnographic samples suggest that bone points from the MSA
levels at Blombos, Peers and Sibudu Caves may have been subject to longitudinal
impact and as such could have used for hunting purposes, but whether they functioned as part of spears or arrows remains uncertain.