Re: Clarification on Earth's age

" George" <george@xxxxxxxxxxxxxxxxxxxxx> wrote in message
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"Greg Neill" <gneillREM@xxxxxxxxxxxxxxxxxx> wrote in message
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" George" <george@xxxxxxxxxxxxxxxxxxxxx> wrote in message
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When the earth was formed (some say during a collision with a mars-sized
body), it was mostly molten, so the lead clock would have reset at that
time.

It is the Moon that is thought to have come into being
due to a collision between the young Earth and a Mars
sized body.

Yes, and the fledgling Earth was completely disrupted, which is why the
Earth and the Moon are the same age.

What do you mean by "completely disrupted"? Vaporized?
Returned to a completely unaggregated cloud?

I think it more likely that the impact caused a reheating
and perhaps complete resurfacing of the Earth while the
Moon coagulated from the debris whacked off of the
Earth. So the Earth's isotope "clocks" would have been
reset at that time.


.

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