(accretion)

Snow line (Ice line, Frost line)45

946

A.G.W. CameronGiant impact was an energetic processDeep magma ocean or total melting of the Earth is compatible with the giant impact model2011/12/21

How deep was the terrestrial magma ocean ?What is the condition of the metal-silicate equilibrium, low pressure or high pressure ?

Sm Eu Gd

5

, DF (core)=0.325F(mantle)=0.675wt.fractionC: abundancewt.%)

, , GPa>40 GPaNiCoCo/Ni Co/NiCo/Ni in the mantle implies very deep magma ocean

Grain 1Asuka 881757 (lunar meteorite)Grain 2Grain 3 the mean age of the glass and the maskelynite, 3798+/-12Ma of the 39Ar-40Ar ages

[

[1] Misawa et al. (1993) GCA 57, 4687-4702:

A-881757Sm-Nd 3870 Ma 3939Ar - 4040Ar 3800 Ma.

The main mass (in private hands) of 155,57 gAlmahata SittaMeteorongs in large number (basalt)http://www.haberer-meteorite.de/english/Asteroid%202008%20tc3/Asteroid%202008%20TC.htmlCoarse-grained Ureilite MS-170 Slices & fragments

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