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研究的微小型叠层石 Pseudogymnosolen f.产于华北蓟县中元古代蓟县系雾迷山组 ,年龄近 13 0 0 Ma。该种叠层石具有非常清楚的生长节律 ,而且由小到大至少可划分出三个的级别 ,即“基本层”、“基本层组”和“叠层石带”,它们分别被解释为昼夜节律、月节律和年节律。根据月节律中的昼夜节律数和年节律中的月节律数 ,得出的初步结论是在近 13 0 0 Ma以前 ,古月球绕古地球旋转 1周至少需要 42天 ,古地球绕古太阳公转一周 ,古地球至少要自转5 46周 ,古月球绕古地球至少要旋转 13周 ,古地球自转 1周最多仅需 16.0 5小时
Pseudogymnosolen f. Was studied in the Miqishan Formation, Mi Zhongxian, Jixian, North China, with an age of nearly 1300 Ma. The stratum has a very clear growth rhythm, and from small to large can be divided into at least three levels, namely, “basic layer”, “basic group” and “laminated belt”, which are interpreted as Circadian rhythm, lunar rhythm and annual rhythm. Based on the circadian rhythms in the rhythm of the moon and the rhythms of the rhythm in the rhythm of the year, it is concluded that at least about 42 days have passed since the ancient moon revolves around the ancient earth for one week before the ancient Moon revolved around the ancient Sun A week, the ancient earth rotation at least 5 46 weeks, the ancient moon orbiting the ancient earth at least 13 weeks rotation, ancient earth rotation a week only needs 16.0 5 hours