Cut-away illustration of the Earth. Six main zones are seen: at the centre is the inner core,surrounded in turn by the outer core,lower mantle,a transition zone,the upper mantle and finally the thin crust. The top half shows convection patterns around plate margins. At centre is the Mid-Atlantic Ridge,a constructive spreading zone in the middle of the plate. At right is another spreading zone in the Indian Ocean. At left is a subduction zone,where the Nazca plate is being pushed under the South American plate. Such destructive margins create large chains of volcanos and mountain chains such as the Andes | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Hardy, David |
Taille de l’image : | 2414 px × 3219 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |