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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 nameSample numberδ13C (‰ VPDB)Mean δ13C (‰ VPDB)δ18O (‰ VPDB)Mean δ18O (‰ VPDB)
Wuhai sectionWHXZ-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 sectionDQZX-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 sectionXWDXZ-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 sectionSDGZX-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 sectionFZXZ-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 sectionJZXZ-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