Depositional architecture of the Polish epicontinental Middle Jurassic basin

Anna Feldman-Olszewska


A number of depositional systems and sub-systems have been distinguished within the Middle Jurassic deposits of the Polish Lowlands: fluvial, siliciclastic shelf (with shallower and deeper shelf - the latter includes anoxic shelf facies), carbonate-clastic shelf, carbonate ramp and starved shelf. On the basis of the analysis of their vertical succession and lateral changes as well as gaps recognized within the stratigraphical column, the Middle Jurassic deposits have been subdivided into six transgressive-regressive cycles. They have been compared with the eustatic curves of B. U. Haq et al. (1988) and A. Hallam (1988).

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