Pangaea: break-up of a supercontinent. Frame from a computer model of Earth,showing the super- continent Pangaea 130 million years ago - 50 million years after it began to break up. A pattern has already emerged of existing oceanic plates being subducted under continental plates (dark blue margins) while fresh oceanic plates are being formed at constructive margins between continental plates (red/yellow areas). This model uses convection currents in Earth's mantle,beneath the crust,to power the break-up of Pangaea and the movements of the tectonic plates known today | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / JOHN BAUMGARDNER, LOS ALAMOS NATIONAL LABORATORY |
Bildgröße: | 3543 px × 2480 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |