Lunar nodal tide and distance to the Moon during the Precambrian

  title={Lunar nodal tide and distance to the Moon during the Precambrian},
  author={JAMES C. G. Walker and Kevin J. Zahnle},
The pace of tidal evolution for the past ∼450 Myr implies an Earth/Moon collision some 1,500–2,000 Myr BP (see ref. 1), an event for which there is no corroborating evidence. Here we present the first direct determination of the lunar distance in the Precambrian. We interpret a 23.3±0.3-yr periodicity preserved in a 2,500 Myr BP Australian banded iron formation (BIF)2 as reflecting the climatic influence of the lunar nodal tide, which has been detected with its modern 18.6-yr periodicity in… Expand

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