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This study presents a synthesis of currently available data on the distribution of Cenomanian-age palaeodrainage systemsin the Bohemian Cretaceous Basin, filled by fluvial and estuarine strata, and an interpretation of their relationshipsto the basement units and fault systems. Much of the progress, compared to previous studies, was made possible by a recentbasin-scale evaluation of Cenomanian genetic sequence stratigraphy. Several local palaeodrainage systems developedin the basin, separated by drainage divides of local importance and one major divide – the Holice-Nové MěstoPalaeohigh – which separated the drainage basins of the Tethyan and Boreal palaeogeographic realms. The locations anddirections of palaeovalleys were strongly controlled by the positions of inherited Variscan basement fault zones,whereas the bedrock lithology had the subordinate effect of narrowing or broadening valleys on more vs. less resistantsubstratum, respectively. The intrabasinal part of the palaeodrainage network followed the slopes toward the Labe(Elbe) System faults and was strongly dominated by the conjugate, NNE-trending, Jizera System faults and fractures.Outlet streams – ultimate trunk streams that drained the basin area – are interpreted to have followed the Lužice FaultZone toward the Boreal province to the Northwest, and the Železné hory Fault Zone toward the Tethyan province to theSoutheast. At both the northwestern and southeastern ends of the Bohemian Cretaceous Basin, shallow-marine orestuarine conditions are proven to have existed during the early Cenomanian. Direct evidence for syn-depositional subsidenceduring the early to mid-Cenomanian, fluvial to estuarine phase is very rare, and the onset of deposition by fluvialbackfilling of the palaeodrainage systems was driven mainly by the long-term rise in global sea level. Subtle surfacewarping, mostly without detectable discrete faulting, is inferred to have been a response to the onset of the palaeostressregime that later, with further stress accumulation, led to subsidence in fault-bounded depocentres of the Bohemian CretaceousBasin and uplift of new source areas

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Palaeodrainage systems at the basal unconformity of the Bohemian Cretaceous Basin: roles of inherited fault systems and basement lithology during the onset of basin filling