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LACCOLITH [1 record]

Record 1 2009-10-05

English

Subject field(s)
  • Geomorphology and Geomorphogeny
DEF

An intrusion of igneous rock which spreads along bedding planes and forces the overlying strata into a dome.

OBS

Grove Karl Gilbert ... coined the term "laccolite" (now laccolith) to describe the characteristic shapes of some of the igneous intrusions that core the mountains.

OBS

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

French

Domaine(s)
  • Géomorphologie et géomorphogénie
DEF

Massif de roche magmatique.

CONT

[...] les laccolites [...] sont en quelque sorte des volcans avortés. [...] Leur base, sensiblement horizontale, est en relation avec le magma sous-jacent par une cheminée verticale. Leur section est elliptique, leur toit en forme de coupole pouvant émettre des apophyses dans les roches sédimentaires encaissantes.

OBS

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

Key term(s)
  • laccolithe

Spanish

Campo(s) temático(s)
  • Geomorfología y geomorfogénesis
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