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sial

/ˈsaɪ.əl/

Traduction: Terme géologique désignant les roches de type granitique qui forment la couche externe de la croûte terrestre, riches en silice et en aluminium.

1 entrée

noun

/ˈsaɪ.əl/C2formalscientific
  • frTerme géologique désignant les roches de type granitique qui forment la couche externe de la croûte terrestre, riches en silice et en aluminium.

A geological term referring to the granitelike rocks that form the outermost layer of the Earth's crust, rich in silicon and aluminum.

indénombrable

  1. Earth's crust layerC2formalscientific

    The granitelike rocks that form the outermost layer of the Earth's crust, rich in silicon and aluminum.

    frsial (couche externe de la croûte terrestre)

    • The sial layer is primarily composed of granite and other light-colored rocks.
    • Geologists study the sial to understand continental crust formation.
    • The sial is less dense than the sima layer beneath it.