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Table 3 Carbon and oxygen isotopes of the oncolitic limestone samples from the Cambrian Miaolingian Series, North China Platform

From: Morphology and features of Cambrian oncoids and responses to palaeogeography of the North China Platform

Section name

Sample number

δ13C (‰ VPDB)

Mean δ13C (‰ VPDB)

δ18O (‰ VPDB)

Mean δ18O (‰ VPDB)

Wuhai section

WHXZ-1

−0.38

− 0.302

−6.38

−6.664

WHXZ-2

−0.12

−6.12

WHXZ-3

−0.09

−6.22

WHXZ-4

−0.27

−7.18

WHXZ-5

−0.65

−7.42

Diaoquan section

DQZX-1

−1.01

−0.626

−6.21

−6.650

DQZX-2

−0.77

−7.02

DQZX-3

−0.83

−6.32

DQZX-4

−0.21

−7.45

DQZX-5

−0.31

−6.25

Xiaweidian section

XWDXZ-1

−0.78

−0.788

−9.41

−8.758

XWDXZ-2

−0.83

−9.02

XWDXZ-3

−0.69

−8.32

XWDXZ-4

−0.72

−8.59

XWDXZ-5

−0.92

−8.45

Sandaogou section

SDGZX-1

−0.94

−0.796

−8.50

−7.854

SDGZX-2

−0.57

−7.69

SDGZX-3

−0.95

−7.99

SDGZX-4

−0.73

−8.11

SDGZX-5

−0.79

−6.98

Fuzhou Bay section

FZXZ-1

−0.73

−0.890

−10.01

−9.712

FZXZ-2

−0.56

−10.48

FZXZ-3

−1.03

−9.94

FZXZ-4

−1.16

−8.59

FZXZ-5

−0.97

−9.54

Jinzhou Bay section

JZXZ-1

−0.77

−0.716

−9.65

−10.404

JZXZ-2

−0.95

−9.92

JZXZ-3

−0.46

−11.52

JZXZ-4

−0.88

−10.22

JZXZ-5

−0.52

−10.71