the youngest rock in the earths crust is found at mid-ocean ridges.
the youngest rock in the earths crust is found at mid-ocean ridges.
where is the youngest rock in the earths crust found?
at mid-ocean ridges
Na
Na
earth heat transport occurs by conduction, mantle convection, hydrothermal convection, and volcanic advection. earth's internal heat flow to the surface is thought to be 80% due to mantle convection, with the remaining heat mostly originating in the earth's crust, with about 1% due to volcanic activity, earthquakes, and mountain building. thus, about 99% of earth's internal heat loss at the surface is by conduction through the crust, and mantle convection is the dominant control on heat transport from deep within the earth. most of the heat flow from the thicker continental crust is attributed to internal radiogenic sources, in contrast the thinner oceanic crust has only 2% internal radiogenic heat. the remaining heat flow at the surface would be due to basal heating of the crust from mantle convection. heat fluxes are negatively correlated with rock age, with the highest heat fluxes from the youngest rock at mid-ocean ridge spreading centers (zones of mantle upwelling), as observed in the .
earth's internal heat budget