Assertion: lithosphere's crust | /r/Synonym | sima
Facets:
value: from magnesium
type: OTHER
value: from silicon
type: OTHER
Source sentences:
text: The plates are around 100 km (62 mi) thick and consist of two principal types of material: oceanic crust (also called sima from silicon and magnesium) and continental crust (sial from silicon and aluminium).
text: This layer is sometimes called sial because its bulk composition is richer in silicates and aluminium minerals and has a lower density compared to the oceanic crust, called sima which is richer in magnesium silicate minerals and is denser.