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THAW [1 record]

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Alphabetical list of terms

Record 1 1992-12-02

English

Subject field(s)
  • Petrography
CONT

The effect of freeze and thaw on the rock fragmentation and disintegration is very important. It is the main weathering factor in cold regions and high mountains. It manifests itself in our regions by frost-shattered stones.

French

Domaine(s)
  • Pétrographie
CONT

L'eau pénètre dans les fissures des roches; en gelant, elle augmente de volume, dans la proportion d'un dixième, et peut faire éclater la roche, qui dans ce cas est dite gélive.

CONT

Une pierre est gélive lorsque sa porosité est telle qu'elle retient le maximum d'eau; une roche sans vides capillaires n'est pas gélive, même si elle est très perméable à l'eau.

CONT

La porosité des trachytes en fait des pierres gélives, légères [...], de faible dureté.

Spanish

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