Beyond the Surface: Exploring Ancient Plant Food Processing through Confocal Microscopy and 3D Texture Analysis on...

Area of Science:

• Archaeological science
• Materials science
• Geology

Background:

• Ground stone tools are crucial for understanding prehistoric lifeways and technology.
• Use-wear studies on these tools increasingly employ quantitative methods for detailed analysis.
• Advanced techniques like 3D modeling and confocal profilometry are emerging.

Purpose of the Study:

• To apply confocal light microscopy and 3D surface texture analysis to identify and differentiate micro-polishes from plant food processing.
• To test the method's efficacy on modern limestone replicas simulating prehistoric tool use.
• To evaluate the integration of quantitative and qualitative use-wear analysis for functional interpretation.

Main Methods:

• Application of confocal light microscopy for high-resolution surface imaging.
• 3D surface texture analysis to quantify micro-polish characteristics.
• Experimental use of limestone replicas for grinding, pounding, and dehusking plant materials.

Main Results:

• Confocal microscopy and 3D analysis successfully discriminated between various micro-polishes.
• The study demonstrated the method's ability to identify polishes resulting from processing cereal grains and legumes.
• Quantitative data correlated with qualitative use-wear observations.

Conclusions:

• Confocal microscopy and 3D surface texture analysis offer a powerful, quantitative approach to ground stone tool use-wear studies.
• This integrated methodology enhances the functional interpretation of archaeological assemblages.
• Future research should focus on systematic application and addressing current limitations.