Author	Zitt, J., Nekvasilova, O., Bosak, P., Svobodova, M. Stemprokova-Jirova, D. and Sta
Year	1997
Journal	Vestnik Ceskeho Geologickeho ustavu 72, 2, 1997.Vestnik Ceskeho Geologickeho ustavu 72, 2, 1997.
Title	Rocky coast facies of the Cenomaman- Turonian Boundary interval at Velim (Bohemian Cretaceous Basin, Czech Republic).Second part.

Abstract Zitt, J., Nekvasilova, O., Bosak, P., Svobodova, M. Stemprokova-Jirova, D. and Statsny, M., 1997. Rocky coast facies of the Cenomaman- Turonian Boundary interval at Velim (Bohemian Cretaceous Basin, Czech Republic). Second part. . Vestnik Ceskeho Geologickeho ustavu 72, 2, 1997. Abstract. This is the second part of the study on the nearshore sedimentary environments of the Cenomanian-Turonian boundary interval at Velim ( the first part see Zitt et al. 1997). Studies on the planktic foraminifera and palynomorphs, together with a discussion and interpretation of all obtained data are presented. A new dinoflagellate species, Xenascus velirmensis sp.n., is described. The sediments seem to belong to two transgression-regression cycles and a transgressive part of a third one. Conglomerates with mineralized initial hardground structures were formed (Guembelitna aSsociation) during the first cycle, which culminated with a major phosphogenic episode, the deposition of Whiteinella archaeocretacea Zone sediments and reworking (late Cenomanian - early Turonian). The following two cycles are characterized by foraminifers of the Dicarinella association (early Turonian). The second cycle begins with grey Corg-enriched siltstones (still the W. archaeocretacea Zone) with diverse macrofauna, overlain by the light chalk-like siltstones with sponge accumulation. The third cycle has an erosional base and also begins with grey Corg-ennched siltstones, but contains a poor macrofauna. These pass upwards into siltstones with abundant sponges. The top horizons record a slight shallowing of the sea. In the environments of phosphogenesis and Corg enrichment oxygen deficiency is suggested.