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 eradicate something is to get rid of it, to destroy it, and to kiss it goodbye. Eradicate is from the Latin word eradicare meaning to root out.. When you yank that weed up by the roots, it has been eradicated; it's not coming back.