Abstract

The thick (2 000 m) siliciclastic-dominated synrifi series, which fills up most of the internal troughs of the Central Fore Balkan from Uppermost Tithonian to Valanginian, is subdivided into ten tectono- eustatic depositional sequences. The sequences consist of a coarse and voluminous low stand wedge (block complex, canyon-cone conglomerates, megaslumps, calcareous breccias, etc.) induced by extensional tectonics; and above, a pelite-dominated high stand wedge, of eustatic origin, which contains most of the zonal and subzonal Ammonites allowing datations and correlations. To the NE, towards the Moesian Platform, only the high stand wedges (with or without the transgressive system tracts) of the successive sequences overflow the troughs and become richer in carbonates to the top of the parasequences.

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