Origin of earth's moonThe major geochemical properties of the moon are briefly considered along with the significant facts of the moon's geologic history, and then the three current hypotheses regarding the moon's origin, namely, fission, capture, and binary accretion, are reviewed. The individual merits and improbabilities associated with each mechanism are taken into consideration. Special attention is given to the binary accretion model as the most promising one. In the variants of this model, of crucial importance is the nature of the more general hypothesis assumed for planetary formation from the solar nebula. The two main models differ considerably in the amount of chemical fractionation they allow to accompany planetary formation.
Document ID
19770058146
Acquisition Source
Legacy CDMS
Document Type
Other - Collected Works
Authors
Wood, J. A. (Smithsonian Astrophysical Observatory Cambridge, Mass., United States)