This paper preliminary reports the carbon isotopic characteristicsof kerogen, individual hydrocarbons and associated carbonatepreserved in Paleo- to Neoproterozoic (1.9-0.85 Ga) sedimentsfrom Jixian strata section, North China. A comparison wascarried out between these isotopic data and independent This paper preliminary reports the carbon isotopic characteristics of kerogen, individual hydrocarbons and associated carbonate preserved in Paleo- to Neoproterozoic (1.9-0.85 Ga) sediments from Jixian strata section, North China. A comparison was carried out between these isotopic data and independent