breckenridgeback t1_jaej68q wrote
Reply to comment by Lithuim in ELI5: Does a volcano have a 'floor' under the lava? or does it go straight to the centre of the earth? by _zobi1kenobi
The asthenosphere, which makes up most of the mantle, is mostly solid. It's squishy, but solid.
BillWoods6 t1_jaf1sim wrote
It's liquid enough to circulate somewhat, dragging the more-solid slabs of the lithosphere around the surface of the Earth.
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