Paleogeographic History of Plate Tectonics
This set of 41 paleo-elevation models (DEM) represent the changing paleogeography of the oceans and continents back to 200 million years ago (the beginning of the Jurassic Period). The snapshots of ancient elevation and bathymetry, based on the interpretation of the rock record, were estimated for time intervals 5 million years apart. The digital elevation model starts when Pangea split into the supercontinents of Laurasia (northern hemisphere) and Gondwana (southern hemisphere). These two continents subsequently subdivided to form the modern continents and ocean basins. India, which rifted from Gondwana ~100 million years ago collided with Asia to form the Himalaya mountains and Tibetan plateau 50 million years ago. The resolution of the data is 1 geographic degree. Click-on any location of the map to find out its ancient elevation.