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IMPACT SCAR [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2002-09-04

English

Subject field(s)
  • Astronomy
  • Geomorphology and Geomorphogeny
DEF

An ancient erosional scar on the Earth's surface, produced by the impact of a cosmic body, and usually characterized by a circular outline and highly disturbed rocks showing evidence of intense shock; an eroded remnant of a meteoritic or cometary impact crater.

French

Domaine(s)
  • Astronomie
  • Géomorphologie et géomorphogénie
DEF

Cratère de grande surface dû à l'impact d'un gigantesque météorite à la surface de la Lune ou de la Terre.

CONT

S'il s'agit d'une structure [...] ancienne, préquaternaire, et, par conséquent déjà fortement érodée, parfois réduite à l'état de vestige plus ou moins oblitéré, de cicatrice ayant perdu tout ou partie de sa muraille bordière, on parlera [...] d'«astroblème» [...] ou de «cratère fossile».

OBS

À distinguer du «cratère météoritique» dont les dimensions sont plus modestes et la formation plus récente.

Spanish

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