sima

unzählbar

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

• 🇩🇪Substantiv, das die kontinuierliche untere Schicht der Erdkruste bezeichnet, die reich an Silicium und Magnesium ist.

1. Lower layer of Earth's crust C2 formal scientific

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

   • 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.

   🇩🇪Sima