A conceptual framework for the origin of the Moon must explain both the chemical and the mechanical characteristics of the Earth鈥揗oon system to be viable. The classic concept of an oblique giant impact explains the large angular momentum and the lack of a large iron-rich core to the Moon,...
Heat delivered from accretionary impacts is thought to have led to extensive melting of early Earth’s silicate mantle, resulting in a deep magma ocean covering the surface. The mantle’s oxygen fugacity is thought to have increased over accretion and co
In the giant impact hypothesis for lunar origin (Cameron & Ward, 1976; Hartmann & Davis, 1975), the proto-Earth suffered a collision with another protoplanet near the end of accretion that ejected material into a circumterrestrial disk, out of which the Moon formed (see reviews by Asphaug,...
surface, and interior (Sect.2), before presenting the current knowledge of its geological (Sect.3) and climatic evolution (Sect.4). While all Mars missions have improved our understanding of Mars’ evolution, they have also triggered new questions, so we conclude...
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In particular, the shape of the liquidus and solidus relative to the adiabat determines whether a magma ocean will crystallise from the bottom-up or middle-out. These end-member scenarios give different predictions for the longevity of melt at the base of the mantle and thus the origin of ...
The origin and implications of primordial helium depletion in the Afar mantle plume Article Open access 25 September 2024 Ruthenium isotope vestige of Earth’s pre-late-veneer mantle preserved in Archaean rocks Article 11 March 2020 Nitrogen isotope evidence for Earth’s heterogeneous accretion ...
— Crystallization of a magma ocean on a large terrestrial planet that is significantly melted by the energy of accretion may lead to an unstable cumulate density stratification, which may overturn to a stable configuration. Overturn of the initially unstable stratification may produce an early basalti...
The terrestrial magma ocean hypothesisadiabatconvection crystal growthcrystallizationdifferentiationequilibrium crystallizationfractional crystallizationhard-turbulent convectionheat fluxliquidusmeltingThe Publisher regrets that this article is an accidental duplication of an article that has already been published, http...
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