The seven ages of a planet

Details The seven ages of a planet The seven ages of a planet

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...26....1k&link_type=abstract

Icarus, vol. 26, Sept. 1975, p. 1-15.

Other

13

Earth Planetary Structure, Planetary Evolution, Planetology, Solar System, Geomorphology, Tectonics, Terradynamics, Volcanology

Scientific paper

On the basis of almost universally held assumptions concerning the formation of the planets and the isolation of the solar system from outside influences it follows rather plausibly that all terrestrial planets pass in principle through seven stages. The processes involved include the solidification of grains from gas in the condensation stage, planetesimal interactions, and formation processes. Vigorous convection processes lead to the gravitational separation of iron and the outgassing of oceans. Other stages are related to plate tectonics and terminal volcanism. The ultimate stage of quiescence is characterized by a thick lithosphere and no volcanism.

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