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LOW-POTASSIUM ROCK [1 record]

Record 1 2008-07-10

English

Subject field(s)
  • Petrography
  • Geochemistry
CONT

... the dating of Quaternary, low potassium rocks continues to test the limits of the method because of small quantities of radiogenic argon and large atmospheric argon contamination.

OBS

Low-potassium rocks are more common in island arcs, whereas high-potassium, or "shoshonilic,' rocks are found almost exclusively in the interior regions of continents.

OBS

low-potassium rock: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
  • Géochimie
OBS

Les analyses géochimiques (éléments majeurs et en traces) de ces roches principalement basaltiques et andésitiques [...] indiquent leur caractère majoritairement calco-alcalin, faiblement potassique à potassique, ou bien shoshonitique pour quelques échantillons [...]

OBS

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

Spanish

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