地球演化中最大的两级节律

地球演化中表现出的最大两级节律为１０×１０８ａ和２×１０８ａ。每２个相邻节律可合并为一个周期，因而地球演化的最大两级周期为２０×１０８ａ和４×１０８ａ。岩石学、地层学和构造地质学方面诸多证据都说明这种划分的合理性。对于地球演化中的这类大型节律及周期性的成因机制，用笔者已提出的“地球多级驻波脉动理论模型”可以得到较合理的解释。

THE TWO LONGEST GRADES OF RHYTHMS IN EARTH EVOLUTION

One billion years and 0.2 billion years are the two longest grades of rhythms in the Earth evolution. Two neighbouring rhythms may be merged into one period. So the two longest grades of periods are 2 billion years and 0.4 billion years respectively. This division is supported by many evidences in petrology, stratigraphy and tectonics. The mechanism for the forming of these large scale rhythms and periods in the Earth evolution can be explained more rationally by “hypothetical model of the Earth′s multiple ordered standing wave pulsation” proposed by the author (Wang Zhan, 1996).