Movements of a plate on the earth’s surface are described by a rotation angle around an Euler pole.  Relative or absolute euler poles can be derived from magnetic anomalies, hot-spot tracks, continental coastline matching, palaeomagnetic data or a combination of these.


Palaeogeography is the study of the geography of the ancient Earth and, on the broadest scale, palaeogeography refers to the distribution of continents and oceans.  At a smaller scale, geographies may be obtained, for example, through the study of facies distribution.  Both geographic scales can ultimately be combined to give a detailed pattern of the geography of an area through time.


The plate tectonic model proposes that the surface of the Earth consists of a series of relatively thin, but rigid, plates that are in constant motion.  Plate tectonics controls the evolution, shape and closure of sedimentary basins and is, therefore, probably the most important control on the development of the stratigraphic record.  Plate tectonics is the means by which the stratigraphic record is written, or preserved, while by contrast, variables such as sea level and climate simply determine the character of the record.  Knowledge of palaeogeography is therefore of utmost importance and EasyGmap can make your dreams come true.



Trond H. Torsvik (2001)