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In this paper, we study quantitatively the effect of the Earth's core formation on the secular rate of change of the length of day (LOD). We find that for the present epoch, a growth rate of the core comprised between 1 and 10 mm/cy seems to be a plausible guess, leading to a relative de crease of LOD comprised roughly between 10 and 100 μs/cy. Such values do not affect significantly the observed...
We show that the fast tidal cycling postulated by Lathe [Lathe, R., 2004. Icarus 168, 18–22] is not a plausible mechanism to explain the origin of life on Earth about 3.9 Ga ago. The value of LOD at this remote epoch was probably comprised between 15 to 17 h, and the Earth–Moon distance was only about 20% smaller than nowadays, implying that the tidal frequencies and amplitudes were not so dramatically...
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