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SEQUENCE ROCHES METASEDIMENTAIRES [1 record]

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Record 1 2005-04-08

English

Subject field(s)
  • Petrography
  • Metals Mining
CONT

The metasedimentary sequence includes graphitic, pyritic, non-graphitic and aluminous pelites and semipelites, calc-silicate rocks, banded iron formation, volcanic rocks and greywackes. ... The metasedimentary sequence is folded into a syncline and intruded by dykes or granite pegmatite. The mineralization is confined mainly to the graphitic quartzite horizon, which is fractured and altered by sericitization, chloritization and argillization.

French

Domaine(s)
  • Pétrographie
  • Mines métalliques
CONT

[...] la fusion partielle de séquences métasédimentaires épaisses avec shales noirs et grauwackes, comme dans l'Erzgebirge, les Andes boliviennes orientales, le Portugal et le Sud-Est asiatique.

OBS

Dans le Groupe de Wakeham, on trouve surtout des roches métasédimentaires (roches sédimentaires métamorphisées).

Spanish

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