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Difference between laser ablation and TIMS in ppm (87Sr/86SrLA−87Sr/86SrTIMS)/87Sr/86SrTIMS×106) for 87Sr/86Sr (a) and 84Sr/86Sr (c) and the precision (2sd/average)×106 for laser ablation analysis (in ppm) for 87Sr/86Sr (b) and 84Sr/86Sr (d). Publications 1–11=[11–21], respectively. Typical TIMS precision (in ppm) is represented by the grey shaded area (e.g. see [38])
