TERMIUM Plus®

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SILEX CRAIE [1 record]

Record 1 2005-03-07

English

Subject field(s)
  • Mineralogy
  • Geochemistry
  • Geology
DEF

Variety of chert, which occurs commonly as nodules and bands in chalk.

OBS

[Flint] is deposited in the porous, permeable structures of sponge, diatom, and echinoid skeletons and also in burrows.

OBS

This term is widely used for a dark subvariety of chert. It has been proposed to drop the term or reserve it for artifacts.

French

Domaine(s)
  • Minéralogie
  • Géochimie
  • Géologie
DEF

[...] concentrations de silice non clastique qui apparaissent, soit en nodules plus ou moins gros et de forme très irrégulière, soit en lits ou en bancs plus ou moins continus et d'épaisseur variable.

OBS

Ces matériaux siliceux s'alignent toujours parallèlement à la stratification et constituent comme des corps étrangers inclus dans la masse de la craie.

Spanish

Campo(s) temático(s)
  • Mineralogía
  • Geoquímica
  • Geología
DEF

Cuarzo criptocristalino que se encuentra en el seno de la creta y otras rocas calizas.

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