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CALCOALCALIN [6 records]

Record 1 2010-11-17

English

Subject field(s)
  • Petrography
  • Mineralogy
  • Geochemistry
DEF

Applied to igneous rocks in which the dominant feldspar is calcium-rich [and] also ... to calcium-bearing minerals ...

CONT

Calc-alkaline rocks tend to contain calcium-bearing ferromagnesian minerals ...

OBS

calc-: Prefix meaning limy, i.e., containing calcium carbonate.

OBS

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

French

Domaine(s)
  • Pétrographie
  • Minéralogie
  • Géochimie
DEF

Se dit d’une roche, d’un terrain, magmatique, dont les proportions d’alcalins (Na + K) sont voisines ou égales aux proportions de Ca.

OBS

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

PHR

Magmatisme calco-alcalin.

Spanish

Save record 1

Record 2 2004-07-12

English

Subject field(s)
  • Geochemistry
  • Vulcanology and Seismology
CONT

In this chain [Andean chain] are developed belts of calc-alkaline volcanism and plutonism accompanied by tectonic deformation and crustal thickening.

French

Domaine(s)
  • Géochimie
  • Volcanologie et sismologie
CONT

Bloc diagramme [...] des Andes [...]. [...] La Cordillère occidentale est le siège d’un volcanisme actif et d’un plutonisme calco-alcalin important [...]

Key term(s)
  • plutonisme calcoalcalin

Spanish

Save record 2

Record 3 2004-05-19

English

Subject field(s)
  • Geochemistry
  • Vulcanology and Seismology
CONT

Sillitoe explains this pattern of zonation as resulting from "the release of metals from basaltic oceanic crust and pelagic sediments during partial melting at progressively deeper levels on subduction zones which dipped eastward beneath the continent; the metals subsequently ascended as components of calc-alkaline magma."

CONT

Ascending calc-alkaline magma.

CONT

Toleiitic and calc-alkaline magma series at Adatara Volcano, Northeast Japan ...

CONT

The [iron] sources that have been invoked are calc-alcaline ... magmas ..., alkaline and peralkaline magmas ...

French

Domaine(s)
  • Géochimie
  • Volcanologie et sismologie
DEF

Magma générateur de roches calcoalcalines.

CONT

En profondeur vers 50 km, le faciès métamorphique est de type amphibolite et de faciès éclogite. Au-delà de 150 km de profondeur la fusion partielle se réaliserait donnant naissance aux magmas calco-alcalins (andésitiques), permettant ainsi de déterminer un front de volcanisme.

CONT

Parmi les sources de fer invoquées figurent les magmas calco-alcalins [...], les magmas alcalins et hyperalcalins.

Spanish

Save record 3

Record 4 2001-04-12

English

Subject field(s)
  • Geochemistry
  • Mineralogy
Key term(s)
  • calc-alkaline feldspar
  • calc-alkalic feldspar

French

Domaine(s)
  • Géochimie
  • Minéralogie
OBS

Voir fiche «calco-alcalin».

Spanish

Save record 4

Record 5 2001-04-12

English

Subject field(s)
  • Geochemistry
  • Vulcanology and Seismology
CONT

In this [Andean] chain are developed belts of calc-alkaline volcanism and plutonism accompanied by tectonic deformation and crustal thickening.

CONT

... these two trends in island arcs take the form of pyritic copper deposits associated in time with both tholeiitic and ultrabasic rocks followed, with the change to calc-alkaline volcanism, by larger and more zinc-rich deposits ...

French

Domaine(s)
  • Géochimie
  • Volcanologie et sismologie
CONT

Les zones d’affrontement de plaques (zones de subduction) sont le siège d’un volcanisme de type calco-alcalin, andésitique, beaucoup plus brutal et associé à une forte séismicité. C’est, en particulier, le volcanisme de la «ceinture de feu» du Pacifique.

CONT

[...] le magma ainsi formé alimente un volcanisme essentiellement calco-alcalin (andésites, dacites) [...]

Key term(s)
  • volcanisme calcoalcalin

Spanish

Save record 5

Record 6 2001-04-12

English

Subject field(s)
  • Geochemistry
  • Vulcanology and Seismology
CONT

The massive sulphide deposits of Kuroko-type ... are associated with the more felsic stages of calc-alkaline magmatism ...

CONT

... there is a close temporal relationship between porphyry copper mineralization and associated calc-alkaline magmatism.

French

Domaine(s)
  • Géochimie
  • Volcanologie et sismologie
OBS

Par dérivation de «magma calcoalcalin»(voir fiche).

Spanish

Save record 6

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