Mantle Silicates and Magnesium Oxide Dense 1000-3500 C (hotter towards the core) Mostly solid, but rocks flow under pressure-viscous Giant convection currents carry heat from the core to the crust, ... ..and return cooler material towards core Thin layer of near-molten rock near crust Moho is the boundary between crust and mantle
Oceanic or Continental Crust? Of the two, Which is thicker? Which is more dense? Which is older? Which has greater complexity of rock types? Which gets recycled?
The Crust “ A brittle, fractured, thin, solid layer”