The cyclicity of the lower miocene deposits of the SW part of the Carpathian Foredeep as the depositional response to sediment supply and sea-level changes

The Lower Miocene deposits of the SW part of the Carpathian Foredeep show a recurrent cyclic arrangement. These cycles are typical transgressive/regre ssive cycles. Among many factors causing cycle stacking patterns two played a leading role: sea-level changes and the rate of sediment supply. The Egg enburgian and Ottnangian sedimentary record of the basin can be subdivided into several sequence stratigraphic units. Two sequences have been recogniz ed within the studied area. Sequence I is formed by a succession of sedimen ts forming segments A, B and C with their parasequence sets. Deposits of se gment A are interpreted as lowstand/early transgressive deposits, segment B is formed by transgressive deposits and segment C by highstand deposits. D eposits of the falling stage were not described in the area under study but are traced more basinward. Within sequence II only one segment that is seg ment D (transgressive and highstand deposits) with its parasequence sets ha s been recognized. The morphology and different subsidence rate of various parts of the basin basement strongly influenced the thickness and developme nt of recognized sequence stratigraphic units.