Nature of megacycles in evolution of Earth, Mars, and Moon

Details Nature of megacycles in evolution of Earth, Mars, and Moon Nature of megacycles in evolution of Earth, Mars, and Moon

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985rpspr...5...69m&link_type=abstract

In its USSR Rept.: Space (JPRS-USP-85-005) p 69-70 (SEE N86-14111 04-88) Transl. into ENGLISH from Dokl. Akadem. Nauk SSSR (M

Physics

Cycles, Earth (Planet), Lunar Evolution, Mars (Planet), Planetary Evolution, Cooling, Cratons, Lithosphere, Magma, Planetary Atmospheres, Planetology, Tectonics

Scientific paper

It is hypothesized that the evolution megacycles of the Earth, Mars, and the Moon began with bursts of tectonic-magmatic activity at both hemispheres, which was then focused in one of them. The specific character of newly formed structures in middle stages of the megacycle in the more active hemisphere depends on the intensity of endogenous processes, the horizontal displacement of asthenosphere matter, and the viscosity and thickness of the lithosphere. The final stage of a megacycle is total cooling of the planet (e.g., the Moon or Mars after the second megacycle), or a pause in its activity (e.g., Mars between the first and second megacycles), or an epoch of crustal cratonization (e.g., the Earth).

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