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
demolish. 1  to destroy or ruin (a building or other structure), especially on purpose; tear down; raze. 2  to put an end to; destroy; explode: The results of his research demolished many theories. 3  to lay waste to; ruin utterly: The fire demolished the area. 4  Informal. to devour completely: We simply demolished that turkey.