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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