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PROTOLITHIC ROCK [1 record]

Record 1 2008-09-09

English

Subject field(s)
  • Petrography
DEF

The original, unmetamorphosed rock from which a given metamorphic rock is formed.

CONT

Metamorphic rocks are generally considered to have a parent rock, or protolith, which can be any rock type.

CONT

Residually enriched deposits are sedimentary concentrations of commodities achieved by in situ weathering of a suitable precursor rock.

OBS

protolith: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
CONT

La minéralogie silicatée d'un skarn donné est, dans une large mesure, tributaire de la composition de son protolite [...] Les skarns formés à partir d'un protolite calcaire [...] renferment du grenat andradite en abondance [...] Les skarns formés à partir d'un protolite dolomitique [...] contiennent en abondance des minéraux magnésiens d'altération prograde [...]

OBS

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

Spanish

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