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华北中、新元古界海相碳酸盐岩分布广泛,且沉积岩层巨厚,地表各类油苗显示众多。结合前人资料,讨论了海相碳酸盐岩烃源岩评价的标准。目前对有机质丰度下限的认识不一,其值确定应考虑源岩有机母质类型、热成熟度、岩石矿物组成、古地温及生储配置关系等诸多因素,由此认为华北地区尤其是华北南部地区的有机质丰度下限值有
In North China, the Neoproterozoic maritime carbonate rocks are widely distributed, and the thick sedimentary rocks, surface oil and seedlings of various types show many. Combined with the previous data, the evaluation criteria of marine carbonate source rocks are discussed. At present, the understanding of the lower limit of organic matter abundance is different, and its value should be determined by taking into consideration many factors such as the type of organic parent material, thermal maturity, rock mineral composition, palaeogeothermal and the relationship between provenance and storage. Therefore, it is believed that the northern China, The lower limit of organic matter abundance in the region is