Earth's crust

Thesaurus

Noun

1.

Earth's crust - the outer layer of the Earth crust layer - a relatively thin sheetlike expanse or region lying over or under another asthenosphere - the lower layer of the crust horst - a ridge of the earth's crust that has been forced upward between two faults and so is higher than the surrounding land geosphere, lithosphere - the solid part of the earth consisting of the crust and outer mantle crustal plate, plate - a rigid layer of the Earth's crust that is believed to drift slowly sial - the granitelike rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum sima - rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesium