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在古老的前寒武岩石中有机体活动残迹保存下来的很少,但是分散的有机质往往大量地存在。 等对沃罗涅日结晶地块的沃隆佐夫系炭质页岩进行了研究,这些岩石的年龄超过19.5亿年。根据同位素组成计算的总碳含量(证明碳是有机成因的)
There are very few remnants of organic activity in ancient Precambrian rocks, but scattered organic matter often exists in large numbers. Studied the Voronezh-type carbonaceous shale in the Voronezh Crystallographic Plot. These rocks are over 1.95 billion years old. Total carbon content calculated from isotopic composition (proving that carbon is organic)