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Table 1 Carbon and oxygen isotopes of carbonate concretions from the Member IV of Xiamaling Formation (Zhaojiashan and Huangtugang sections)

From: Growth mechanisms and environmental implications of carbonate concretions from the ~ 1.4 Ga Xiamaling Formation, North China

Serial No. Sample ID Thickness (m) Section δ13C (VPDB‰) δ18O (VPDB‰)
No. 01 ZJS-24-3-1a 1.2 ZJS 0.8 −9.4
No. 02 ZJS-24-3-1b 1.2 ZJS 0.0 −10.0
No. 03 ZJS-24-3-1c 1.2 ZJS 1.3 −5.9
No. 04 ZJS-24-7-1a 2.3 ZJS 0.9 −8.9
No. 05 ZJS-24-7-1b 2.3 ZJS 0.9 −6.7
No. 06 ZJS-24-9-1a 2.5 ZJS 1.5 −5.1
No. 07 ZJS-24-9-1b 2.5 ZJS 1.2 −6.7
No. 08 ZJS-24-11-1 2.6 ZJS 0.9 −8.5
No. 09 ZJS-24-15-1 3.1 ZJS −0.3 −9.5
No. 10 ZJS-24-15-2 3.1 ZJS 0.7 −5.6
No. 11 ZJS-24-19-1 3.7 ZJS 0.2 −8.1
No. 12 ZJS-24-21-1a 3.8 ZJS −0.4 −10.0
No. 13 ZJS-24-23-1 4.4 ZJS 0.3 −8.9
No. 14 ZJS-24-25-1 4.5 ZJS 1.1 −8.1
No. 15 ZJS-24-J 5.6 ZJS 1.0 −4.8
No. 16 1704HTG-3 1.5 HTG −0.7 −7.5
No. 17 1704HTG-4 2 HTG −0.6 −8.4
No. 18 1704HTG-6 3 HTG 0.6 −5.2
No. 19 1704HTG-8 4 HTG −0.4 −7.0
No. 20 1704HTG-9 4.5 HTG −1.7 −8.7
No. 21 1704HTG-10 5 HTG 0.8 −4.9
  Min    −1.7 −10.0
  Max    1.5 −4.8
  Average    0.4 −7.5
  1. Note: ZJS Zhaojiashan, HTG Huangtugang