On the thermal history of a moon of fission origin

Details On the thermal history of a moon of fission origin On the thermal history of a moon of fission origin

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977moon...17...29b&link_type=abstract

The Moon, vol. 17, Sept. 1977, p. 29-45.

Astronomy and Astrophysics

Astronomy

3

Astronomical Models, Earth-Moon System, Lunar Evolution, Lunar Temperature, Abundance, Heat Of Formation, Heat Transmission, Liquidus, Melting, Solidus, Specific Heat, Temperature Profiles, Thermal Conductivity

Scientific paper

Model calculations show that the thermal history of a moon which originated by fission from the proto-earth is the same as that for the moon as it is currently understood. In particular, a fissioned moon currently has a small percent of partial melt or at least near solidus temperatures below depths of 8000 km in accord with the seismic data which show that the deep interior of the moon has a very low Q. The models have moderate (20-50%) degrees of partial melting in the upper mantle (depths less than 300 or 200 km) in the period between 3 to 4 times 10 to the ninth years ago and, therefore, can account for the mare filling epoch. Finally the heat flow of the models is 18 ergs/(sq cm times sec) which is close to the average of 19 ergs/(sq cm times sec) derived from the Apollo heat flow experiments. These findings add further support for the fission origin of the moon.

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