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Table 1 Correlations of carbon and oxygen isotopes between hydrothermal fluid and surrounding rocks

From: A near-shore clastic-carbonate mixing mode in a continental rift basin (early Oligocene, eastern Shijiutuo Uplift, Bohai Bay Basin, China): sedimentology, reservoir characteristics and exploration practice

No. Character δ18O‰ V-PDB δ13C‰ V-PDB
1 Vein −7.01 2.56
2 Surrounding rocks − 1.25 1.93
3 Vein −5.59 2.17
4 Surrounding rocks 0.13 2.59