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MAGMA LAMPROITIQUE [1 record]

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Record 1 2006-12-06

English

Subject field(s)
  • Petrography
CONT

Lamproite magmas are derived by partial melting of ancient, enriched (metasomatized, i.e., amphibole-, phlogopite- and apatite-bearing) upper mantle sources (lithospheric) which have previously been depleted in Na, Al, and Ca (leaving a residuum of harzburgitic composition).

French

Domaine(s)
  • Pétrographie
CONT

Les magmas lamproïtiques dérivent de la fusion partielle de sources anciennes et enrichies (métasomatisées, i.e. à amphiboles, à phlogopite et à apatite) dans le manteau supérieur (lithosphère), ces sources ayant été appauvries préalablement en Na, Al et Ca (ce qui laisse un résidu de composition harzburgitique).

Spanish

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