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MOTHER ROCK [1 record]

Record 1 2010-12-16

English

Subject field(s)
  • Petrography
DEF

A rock from which fragments have been derived which form a later, usually sedimentary rock.

CONT

Eluvial placers ... are formed upon hill slopes from minerals released from a nearby source rock.

OBS

source rock; bedrock source: terms used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
DEF

Roche qui, par érosion mécanique, a fourni les éléments détritiques d'un sédiment.

CONT

Par soulèvement, exposition à l'air libre et altération de ce protolite, les concentrations [...] de substances utiles augmentent jusqu'à présenter une teneur rentable ou améliorée dans les gîtes résiduels sus-jacents ou adjacents aux roches mères.

OBS

roche mère : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Campo(s) temático(s)
  • Petrografía
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