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TUFFEAU [1 record]

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Record 1 1977-05-06

English

Subject field(s)
  • Chemical Engineering
  • Geology
OBS

A term used in France for tufa, micaceous chalk, and soft, very porous, extremely coarse limestone made up of bryozoan fragments.

French

Domaine(s)
  • Génie chimique
  • Géologie
OBS

Variété de craie en Touraine, à gros éléments, tendre, friable, poreuse, avec beaucoup de débris de coquilles; elle appartient au Crétacé supérieur; faiblement agglomérée, elle est riche en quartz et mica enrobés de [carbonate de calcium] amorphe. Dans le Nord de la France, c'est un calcaire qui tirerait son nom de son étouffé et sourd produit par le marteau quand on le brise.

Spanish

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