Thermal evolutions of the terrestrial planets

Details Thermal evolutions of the terrestrial planets Thermal evolutions of the terrestrial planets

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978m%26p....18..281t&link_type=abstract

Moon and the Planets, vol. 18, May 1978, p. 281-320.

Mathematics

Logic

28

Astronomical Models, Planetary Evolution, Planetary Temperature, Terrestrial Planets, Asteroids, Heating, Lunar Evolution, Mars (Planet), Mercury (Planet), Venus (Planet)

Scientific paper

Theoretical models are formulated for the thermal evolution of the moon, Mercury, Mars, Venus, and hypothetical minor planets, with consideration of conduction, solid-state convection, and differentiation. A variety of geological, geochemical and geophysical data is used to constrain both the present-day temperatures and the thermal histories of the planetary interiors. The data imply that the planets were heated during or shortly after formation and that all the terrestrial planets started differentiating early in their history. The size of the planet is the primary factor in determining its present-day thermal state. A planetary body with radius less than 1000 km is unlikely to reach melting, given heat source concentrations similar to terrestrial values and in the absence of intensive early heating.

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