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
verb (used with object) 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: