Particle size matters: The effect of particle size on carbon and oxygen isotope composition of bone hydroxyapatite.

Objectives: Stable isotope studies often focus on hydroxyapatite (bioapatite) to answer questions of paleodiet, paleomobility, and paeloenvironment. This study seeks to determine the effect that sample particle size (in particular SA:V, or surface area to volume ratios) has on measured carbon and oxygen stable isotope values (δ C and δ O) in bone hydroxyapatite.

Materials And Methods: Previously ground Homo sapiens sapiens cortical bone samples were subdivided using geological screens to obtain three separate sub-samples, differing only in their particle size.

An isotopic study of dietary diversity in formative period Ancachi/Quillagua, Atacama Desert, northern Chile.

Objectives: To characterize the paleodiet of individuals from Formative Period (1500 B.C.-A.