a relatively thin sheetlike expanse or region lying over or under another

of or relating to or characteristic of the crust of the earth or moon

the granitelike rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum

rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesium

the lower layer of the crust

the solid part of the earth consisting of the crust and outer mantle

a ridge of the earth's crust that has been forced upward between two faults and so is higher than the surrounding land

a rigid layer of the Earth's crust that is believed to drift slowly

the granitelike rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum

rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesium

the lower layer of the crust

the solid part of the earth consisting of the crust and outer mantle