Sur certains problemes de structure et d'histoire de la plate-forme de l'Europe orientale

Abstract

Abstract The eastern European platform is an irregular shield limited on the east by a line between Polyudov Kamen' and Aktyubinsk Its southern boundary extends from the Caspian sea through the Volga delta toward the source of the Sal river and the Azov sea. The western boundary follows the foot of the Scandinavian Caledonian range in the north but is poorly defined southward. Shatsky's theory of aulacogenes (ancient platforms formed in initial evolutionary stages) is discussed in some detail. Continuous, transverse, and internal aulacogenes are distinguished within the European platform. The area shows the effect of Baikalian, Caledonian, Variscan and Alpine orogenies illustrated by tectonic maps.