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SUBSIDENCE CHAUDRON [2 records]

Record 1 2011-02-22

English

Subject field(s)
  • Vulcanology and Seismology
  • Geomorphology and Geomorphogeny
DEF

A structure formed by the lowering along a steep ring fracture of a more or less cylindrical block, usually 1 to 10 miles (1.6 to 16 kilometers) in diameter, into a magma chamber.

OBS

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

French

Domaine(s)
  • Volcanologie et sismologie
  • Géomorphologie et géomorphogénie
DEF

Structure résultant de l'effondrement d'un bloc plus ou moins circulaire dans une chambre magmatique.

OBS

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

Spanish

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Record 2 2011-02-22

English

Subject field(s)
  • Vulcanology and Seismology
  • Geomorphology and Geomorphogeny
DEF

The process in which a more or less cylindrical block of rock above a magma chamber collapses into the space left as the magma moves toward the surface.

CONT

Cauldron subsidence is where a large amount of magma leaves the top of the magma chamber unstable, causing it to collapse inwards ...

OBS

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

French

Domaine(s)
  • Volcanologie et sismologie
  • Géomorphologie et géomorphogénie
CONT

Ces granites présentent souvent des caractères communs : (1) des rhyolites extrusives; (2) des ring dykes et cone-sheet de porphyres quartzeux postérieurs aux rhyolites, indiquant une subsidence en chaudron; (3) des granites à riebéckite-biotite finissant par une bordure de granite à albite.

OBS

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

PHR

Mise en place par subsidence en chaudron.

Spanish

Save record 2

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