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IMPACTITE [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 1998-03-02

English

Subject field(s)
  • Astronomy
  • Planets
DEF

A vesicular, glassy to finely crystalline material produced by fusion or partial fusion of target rock by the heat generated from the impact of a large meteorite, and occurring in and around the resulting crater, typically as individual bodies composed of mixtures of melt and rock fragments...

French

Domaine(s)
  • Astronomie
  • Planètes
CONT

Le choc violent d'une météorite, sur la Terre ou sur d'autres astres, brise les roches préexistantes. Les débris forment une «impactite»; ils sont souvent anguleux. Mais quelquefois la chaleur dégagée par le choc est suffisante pour faire fondre leur bords et même pour provoquer la fonte totale, aboutissant à un verre, ou encore la formation de nouveaux minéraux.

Spanish

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