Image Tags
molten eruption volcano molten rock pahoehoe aa lava tube igneous rock magma basalt andesite dacite rhyolite scoria cinder cone shield volcano composite volcano caldera lava flow lava lake lava dome pyroclastic flow lahars volcanic ash volcanic bomb volcanic plume volcanic winter climate change global warming earth science geology geophysics geochemistry petrology vulcanology tectonics plate tectonics continental drift sea floor spreading subduction mantle convection hotspot mid-ocean ridge transform fault earthquake tsunami