Fig. 3
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87Sr/86Sr ratios measured on all samples (Tubes T, Nodules N, sub-site A1 and sub-site R) were reported on the strontium isotopic curve (black curve of the figure) from McArthur et al. (2012) and the Middle-Upper Jurassic revised version of Wierzbowski et al. (2017). At the bottom the abbreviated geological periods are indicated from the Rhetian (R on the right) to the Danian (D on the left).
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