Figure 6.

Plot of the difference in strontium isotope ratio (Δ ⁸⁷Sr/⁸⁶Sr x 1000) and elemental concentration (Δ Sr ppm) between adjacent permanent molar teeth of individuals excavated from Penywyrlod (Talgarth) individuals of Neolithic date from Ty Isaf long cairn, Powys, Wales. Red symbols: Penywyrlod; Blue symbols: Ty Isaf. Black symbols: Hazleton North long cairn, Gloucestershire, England. Triangles denote the difference in strontium isotope ratio and Sr ppm between first and second molars. Squares denote the difference in strontium isotope ratio and elemental concentration between second and third molars. 2σ errors for ⁸⁷Sr/⁸⁶Sr are within the symbol