The Formation of the Moon

Details The Formation of the Moon The Formation of the Moon

Mar 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974moon....9..219o&link_type=abstract

The Moon, Volume 9, Issue 1-2, pp. 219-225

Physics

1

Scientific paper

Supporting evidence for the fission hypothesis for the origin of the Moon is offered. The maximum allowable amount of free iron now present in the Moon would not suffice to extract the siderophiles from the lunar silicates with the observed efficiency. Hence extraction must have been done with a larger amount of iron, as in the mantle of the Earth, of which the Moon was once a part, according to the fission hypothesis. The fission hypothesis gives a good resolution of the tektite paradox. Tektites are chemically much like products of the mantle of the Earth; but no physically possible way has been found to explain their production from the Earth itself. Perhaps they are a product of late, deep-seated lunar volcanism. If so, the Moon must have inside it some material with a strong resemblance to the Earth's mantle. Two dynamical objections to fission are shown to be surmountable under certain apparently plausible conditions.

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