The mantle is a layer between the crust and the outer core. Earth's mantle is a silicate rocky shell with an average thickness of 2,886 kilometres (1,793 mi). The mantle makes up about 84% of Earth's volume. It is predominantly solid but in geological time it behaves as a very viscous fluid.
demolition - an event (or the result of an event) that completely destroys something wipeout, destruction conclusion, ending, finish - event whose occurrence ends something; his death marked the ending of an era; when these final episodes are broadcast it will be the finish of the show
To destroy is defined as to damage, ruin or spoil something beyond repair. When you drive a truck into a house and totally demolish it, this is an example of a situation where you destroy the house. 1  to tear down; demolish. 2  to break up or spoil completely; ruin. 3  to bring to total defeat; crush.