Fig. 7
Plot of 87Sr/86Sr values of replacement dolomite, dolomite vein, and calcite cement of breccias. The red area comprises the four samples analyzed in this work and ranges chronologically from the age of the dolomitized sediment (Norian) to the youngest possible age of dolomite veins (Middle Jurassic). The 87Sr/86Sr curve of late-middle Permian to early Cretaceous seawater is reported to highlight the high, radiogenic values of the studied samples (modified after McArthur et al. 2012)