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sima

/ˈsaɪ.mə/

Traduction: Nom désignant la couche inférieure continue de la croûte terrestre, riche en silicium et en magnésium.

1 entrée

noun

/ˈsaɪ.mə/C2formalscientific
  • frNom désignant la couche inférieure continue de la croûte terrestre, riche en silicium et en magnésium.

A noun referring to the continuous lower layer of the Earth's crust, which is rich in silicon and magnesium.

indénombrable

  1. Lower layer of Earth's crustC2formalscientific

    The continuous lower layer of the Earth's crust, composed primarily of silica and magnesium, underlying the sial layer.

    frCouche inférieure de la croûte terrestre (sima)

    • The sima layer is denser than the sial layer above it.
    • Geologists study the sima to understand tectonic plate movements.
    • The composition of sima is rich in silicon and magnesium.