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 verb [T] (DESTROY). B2 to âcompletely âdestroy a âbuilding, âespecially in âorder to use the âland for something âelse: A ânumber of âhouses were demolished so that the âsupermarket could be âbuilt.emolish verb [T] (EAT). âº humorous to âquickly âeat all the âfood you have been given: Joe demolished an âenormous âplateful of âchicken and âfries. demolition noun [C or U] uk us /Ëdem.ÉËlÉªÊ.Én/ âº the âact of âdestroying something such as a âbuilding: the demolition of âdangerous âbuildings.