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CRESCENTIC SCAR [3 records]

Record 1 1999-10-04

English

Subject field(s)
  • Glaciology
  • Erosion and Weathering (Geol.)
DEF

Any curved or lunate mark produced by a glacier moving over a bedrock surface.

French

Domaine(s)
  • Glaciologie
  • Érosion et corrosion (Géologie)
CONT

[...] le glacier peut arracher (mais non faire sauter) des fragments de la roche, en laissant des cicatrices sur la surface mais en préservant la forme en croissant des fractures; on obtient ainsi des cicatrices en forme de croissant [...]

Spanish

Save record 1

Record 2 1998-08-10

English

Subject field(s)
  • Geology
  • Physical Geography (General)
DEF

A crescentic scar produced on a hard, dense pebble(esp. one of chert of quartzite) by a sharp blow, as by the violent impact of one pebble on another...

French

Domaine(s)
  • Géologie
  • Géographie physique (Généralités)
CONT

On observe parfois, à la surface de certains galets, des marques en arc de cercle, comparables à ce que laisserait l'empreinte d'un ongle dans une matière plastique. Le rayon de ces arcs de cercle est, en général, d'autant plus grand que le galet est plus gros. Ces marques, qui s'entrecroisent, sont des marques de choc.

Spanish

Save record 2

Record 3 1991-04-25

English

Subject field(s)
  • Geology
  • Glaciology
  • Geomorphology and Geomorphogeny
CONT

pieces of rock may be plucked (but not gouged) from the surface by overriding ice, leaving a scarred surface but preserving the crescentic-like pattern. The reverse crescentic scars open up-ice.

French

Domaine(s)
  • Géologie
  • Glaciologie
  • Géomorphologie et géomorphogénie

Spanish

Save record 3

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