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Comment les pierres racontent la Terre (2011 - Pierre THOMAS ...

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Et si toutes ces petites « bouffées » de magma<br />

granitique se rassemblent et migrent vers le<br />

haut, ce<strong>la</strong> donnera un massif granitique comme<br />

on en a déjà vu.<br />

Il y a donc 2 origines pour le granite.

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