cross section of earth showing geological layers and volcanic activity

earth geological layers volcanic cross landscape mountain rock underground soil nature science terrain stratification earthscience environment geologyeducation crossview innerlayers formation landscapeview study section ecosystem geologyconcept earthstudy earthstructure educational crosssection research environmentstudy earthlayers scientific earthcore geologylayers naturalworld terrestrial layerstudy geologyresearch lithosphere earthinterior subterranean showing activity