Experimental abrasion of water submerged bone: The influence of bombardment by different sediment classes on microabrasion rate

摘要: Data presented here demonstrates the utility of quantitative analysis sediment-induced microabrasion on bone's surface. Fresh sheep (Ovis aries) bone, acting as a human analogue, was bombarded by mobile sediments from silt, sand and gravel classes (ranging 20 μm–3.35 mm) in series flume-based experiments. Controlled bombardment produced unique abrasion patterns bone which were recordable using scanning electron microscopy. Imaging at both × 100 1000 magnifications allowed qualitative distinction to be made concerning sediment class that abraded by; caused advance through cyclical cracking, whereas smoothing surface occurred more frequently silt classes. A stepwise multi-linear regression model identified changes grain size (p < 0.001), duration exposure sphericity abrasive = 0.002), T value (abrasive force) 0.013) respectively, strongest rate limiting factors controlling propagation. The methodology herein analytical allowing diagnostic modifications correlated with specific taphonomic processes. developed experimentation applied four separate case studies; data recorded bones recovered different aquatic contexts, linked hydrological marine seabed demonstrate how documented can reflect sedimentary contexts has passed through. In light these results we suggest approach analysing retrieved water potential allow remains' submersion times transport pathways established higher degree resolution than is currently possible. development improved methodologies for interpretation submerged vital due increasing risks posed flooding coastal erosion archaeological sites.