“…Strontium isotope values above 0.7105 are rather uncommon for the Rhine region and other lowland areas, including the North Sea area, but are typical for low and high mountain ranges with Mesozoic, Paleozoic, and older rocks (Bentley & Knipper, ; Brettell et al, ; Gillmaier et al, ; Knipper et al, ; McManus et al, ; Müller, Fricke, Halliday, McCulloch, & Wartho, ; Oelze et al, ; Smits, Millard, Nowell, & Pearson, ; Voerkelius et al, ). However, a recent study has shown that highly radiogenic bioavailable strontium signatures also occur in lowland localities which are influenced by glacial till of Scandinavian origin such as the Middle Elbe‐Saale region (Knipper et al, ).…”