TY - JOUR
T1 - Sandstone grinding/pounding tools: Use-trace reference libraries and Australian archaeological applications
AU - Hayes, Elspeth
AU - Pardoe, Colin
AU - Fullagar, Richard
PY - 2018
Y1 - 2018
N2 - Residues, surface features and wear patterns documented on experimental and ethnographic artefacts form the foundation of residue and usewear reference libraries, from which we can interpret and evaluate the function of archaeological specimens. Here we report controlled experiments to supplement previous studies and document variables that influence usewear formation on sandstone grinding implements (including abrading stones) of different toughness and hardness. Distinct patterns of usewear result from the class of worked material, modes and duration of use, and the stone material. Hard sandstones can sustain more developed polish during use than soft sandstones, which wear more rapidly. Our experimental reference library is applied here to a pilot study of grinding implements, made of hard and soft sandstones, in archaeological contexts from southeastern Australia, where distributions of hard seed mortars and soft seed grinding stones are correlated with distinct woodland and floodplain vegetation communities, suggesting different behavioural strategies. Seed grinding is documented on both hard and soft sandstones but we suggest that grinding hard seeds is only efficient on hard sandstones. The spatial and chronological distributions of hard and soft sandstone grinding dishes are potentially linked not only with sandstone availability but also with vegetation communities and climate change.
AB - Residues, surface features and wear patterns documented on experimental and ethnographic artefacts form the foundation of residue and usewear reference libraries, from which we can interpret and evaluate the function of archaeological specimens. Here we report controlled experiments to supplement previous studies and document variables that influence usewear formation on sandstone grinding implements (including abrading stones) of different toughness and hardness. Distinct patterns of usewear result from the class of worked material, modes and duration of use, and the stone material. Hard sandstones can sustain more developed polish during use than soft sandstones, which wear more rapidly. Our experimental reference library is applied here to a pilot study of grinding implements, made of hard and soft sandstones, in archaeological contexts from southeastern Australia, where distributions of hard seed mortars and soft seed grinding stones are correlated with distinct woodland and floodplain vegetation communities, suggesting different behavioural strategies. Seed grinding is documented on both hard and soft sandstones but we suggest that grinding hard seeds is only efficient on hard sandstones. The spatial and chronological distributions of hard and soft sandstone grinding dishes are potentially linked not only with sandstone availability but also with vegetation communities and climate change.
U2 - 10.1016/j.jasrep.2018.04.021
DO - 10.1016/j.jasrep.2018.04.021
M3 - Article
SN - 2352-409X
VL - 20
SP - 97
EP - 114
JO - Journal of Archaeological Science: Reports
JF - Journal of Archaeological Science: Reports
ER -