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GLACIS ABLATION [1 record]

Record 1 2009-06-17

English

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

A broad, gently sloping rock surface at the base of a steeper slope, often covered with interlocked, loosely cemented gravel, formed primarily by erosion.

OBS

[This] surface of erosion ... resembles a bajada in surface form.

OBS

pediment; piedmont interstream flat; conoplain; rock pediment; pedimentation surface: terms used at Natural Resources Canada - Earth Sciences Sector.

PHR

Concealed pediment.

French

Domaine(s)
  • Géomorphologie et géomorphogénie
  • Pétrographie
DEF

Glacis entaillé dans des roches meubles ou des altérites, à profil transversal concave d'amont en aval (12° à 1°) dominée par un système de versants raides.

Spanish

Campo(s) temático(s)
  • Geomorfología y geomorfogénesis
  • Petrografía
  • rampa de erosión
DEF

Glacis, de pendiente muy suave, formado sobre una roca dura por una capa de 1 a 2 m de aluviones de la cual emergen relieves residuales.

CONT

Los pedimentos son característicos de climas semiáridos favorables a la disgregación del granito y otras rocas duras en partículas suficientemente finas para que puedan ser transportadas por la arroyada difusa.

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