Science news articles about 'rocky mantle'

... core that accounts for about one-third of its total mass,” he said. “Surrounding this core is a rocky mantle that accounts for most of the remaining two-thirds,” with the thin crust of the Earth’s ...

... field, which may originate in the shallow core just below the rocky mantle layer of the Earth, becomes important when the main north-south field weakens, as it does prior to reversing ...