| Abstrakt: |
The geotectonic events in Late Cretaceous - Early Paleogene interval, caused essential changes in the architecture of the Tethysian paleogenic sedimentation basins and their relationship with the continental source areas. Laramic tectogenetic paroxysm (Maastrichtian/Danian) due to the subduction of the East European craton under the Tisza-Dacia block, plays a double role in the structuralization of the East Carpathian units. In an internal position, the External Dacides are built (The Black Flysch, Baraolt, Ceahlau and Bobu nappes, senso Sandulescu, 1984), and in the external part the Paleogene Foreland basin depozones (equivalent to the "Foreland basin", senso Grasu et al., 1999). The basin worked up to the Lower Miocene, when the styric and moldavic tectogenesis occurred and the Moldavian units were born (from the inner part to the outside are: Marginal Folds Nappe, Macla Nappe, Audia Nappe, Tarcau Nappe, Vrancea Nappe and Subcarpathian Nappe, senso Sandulescu [1], 1984). The Moldavian tectogenesis (intra Volhinian) concludes the Carpathian structogenesis and edification of the major morphostructural lines of the Carpathian contact with the eastern foreland. Between the Suceava and Modova valleys, the transition from the mountainous relief (Obcina Mare) to the plateau is made through the piedmont hills formed on the sub-Carpathian molasse or the Volhinian platform couverture deposits, accumulated on the wedge-top of the Carpathian orogenic prism. [ABSTRACT FROM AUTHOR] |
