Strontium isotope ratios at the sampled locations, grouped at intervals of 0.002 into 9 classes, by Malou Blank.

Background map created using data from Esri. Data and maps licensed to the University of Gothenburg. 1: Halle and Hunne mountains, 2: Kinnekulle, 3: Falbygden. A: Lake Vänern, B: Lake Vättern. SNW: Sveconorwegian west, SNE: Sveconorwegian east and TIB: Transscandinavian granite-porphyry belt.