造山纪(Orosirian,符号PP3)是地质时代中的一个,开始于同位素年龄20亿5000万年前,结束于18亿年前。

造山纪期间蓝藻细菌繁盛。

造山纪属于前寒武纪元古宙古元古代;造山纪的上一纪为层侵纪,下一纪为固结纪

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