plate tectonics on the planet earth. pangaea. continental drift. supercontinent at 250 ma. era of the dinosaurs

tectonic plate education geography earth world planet science continental scientific drift globe earthquake eurasian sea lithosphere pacific crust theory north continent ocean geological cartography graphic antarctic motion pangaea indian history gondwana seafloor spreading pangea nazca caribbean seismology drawing geology etching vintage illustration engraved draw vector sketch engrave engraver hand drawn