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Paleogeography is the study of the physical geography of all or part of the earth’s surface at some time in the geologic past. The study of paleogeography is best represented by a paleogeologic map. These maps shows the areal geology of a land surface at some specific time in the geologic past. The maps below represent how the earth looked and how the continents were arranged at specific points of time during the history of the earth. The continents are always on the move due to plate tectonics (a theory of global tectonics in which the lithosphere is divided into a number of plates whose pattern of horizontal movements is that of torsionally rigid bodies that interact with one another at their boundaries, causing seismic and tectonic activity along these boundaries) as the plates moved together or apart they formed continents and super continents. Some of the names of these are Pangea a supercontinent that existed 300 million years ago to about 200 million years ago and included most of the continental crust of the earth. The present continents were derived from it by fragmentation by an intermediate stage of the smaller continents called Laurasia on the north and Gondwana on the south.
Geologic Resources - Resources for geoscientists, engineers, and related professionals.
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STRATIGRAPHY AND SEDIMENTOLOGY ON THE COLORADO PLATEAU
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