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GEOCHEMICAL DIFFERENTIATION [3 records]

Record 1 2001-09-27

English

Subject field(s)
  • Geochemistry
DEF

A theory explaining the formation of the Earth’s core, mantle, and crust, in which the formation of the nickel-iron core may have been accompanied by partitioning of the elements.

OBS

[This theory] postulates that some of the elements were reduced, alloyed with iron and concentrated in the core, while the remainder formed the mantle and primitive crust.

French

Domaine(s)
  • Géochimie
CONT

[...] sidérophiles, chalcophiles, lithophiles, atmophiles. - La distinction classique de ces familles d'éléments [...] est liée à une certaine idée de la différenciation géochimique primaire de la Terre en un noyau métallique, une enveloppe sulfurée, un manteau silicaté et l'atmosphère primordiale.

Spanish

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Record 2 2001-07-25

English

Subject field(s)
  • Geochemistry
OBS

See records "primary geochemical differentiation" and secondary geochemical differentiation. "

French

Domaine(s)
  • Géochimie
CONT

[...] sidérophiles, chalcophiles, lithophiles, atmophiles. - La distinction classique de ces familles d'éléments [...] est liée à une certaine idée de la différenciation géochimique primaire de la Terre en un noyau métallique, une enveloppe sulfurée, un manteau silicaté et l'atmosphère primordiale.

Spanish

Save record 2

Record 3 1999-05-04

English

Subject field(s)
  • Geochemistry
DEF

A theory concerning the process which may have taken place in and on the Earth’s crust and in the atmosphere, including the organic reaction leading to the development of the biosphere.

French

Domaine(s)
  • Géochimie
OBS

Par analogie avec «différenciation géochimique primaire» (voir fiche).

Spanish

Save record 3

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