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MAGMA BASALTIQUE [1 record]

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Record 1 2003-10-27

English

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

In the earliest stages of extension, both the basaltic and granitic magmas tend to be more alkaline ..., and with advancing extension and continental breakup they become less alkaline.

French

Domaine(s)
  • Volcanologie et sismologie
  • Pétrographie
CONT

La composition chimique influence la fluidité des magmas. Les magmas basaltiques [...], qui sont les plus basiques, ont une point de fusion plus haut, mais leurs laves sont plus liquides [...] Les autres magmas sont d'autant moins fluides qu'ils sont plus acides; leurs laves sont plus visqueuses [...]

CONT

Les dorsales océaniques sont les zones où les plaques se créent par cristallisation du magma basaltique remonté du manteau.

Spanish

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