Dinoflagellate cyst biostratigraphyof the Late Jurassic of Poland

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    Abstrakt

    Polish Upper Jurassic dinoflagellate cyst assemblages have been examined from outcrop and borehole samples andrelated to the Standard ammonite zonation for the area. These dinoflagellate cyst association have been correlated to corresponding associations in Denmark and the British Isles. In general this correlation suggests a stratigraphic range for the dinoflagellate cyst biozonation similar to those established for the British Isles and Denmark. The Oxfordian sections yielded dinoflagellate cyst associations that are different in composition from those of the Danish Dubbasin, the North Sea area, and the British Isles. The Kimmeridgian and Volgian dinoflagellate cyst associations of Poland are very rich, and comprise many species described from the North Sea area together with many other species. In the Kimmeridgian, however, the boundary between the Stephanelytron scarburghense Subzone and the Perisseiasphaeridium pannosum Subzone occurs in the middle Divisium Zone. In the British Isles, this boundary corresponds to the middle Mutabilis Zone. The boundary in Poland is marked by first or last occurrences of four of the index species, allowing possible correlation of the middle Divisum Zone with the middle Mutabilis Zone. The uppermost Volgian beds of the Holy Cross Mountains-Krakow-Wielun area are dated as Scythicus Zone and are marked by dinoflagellate cyst species, which indicate the Dichadogonyaulax culmula zone, Subzone a and a possible correlation to the Albani Zone.

    OriginalsprogEngelsk
    Sider (fra-til)401-407
    Antal sider7
    TidsskriftGeobios
    Vol/bind27
    Udgave nummerSupplement 2
    DOI
    StatusUdgivet - dec. 1994

    Emneord

    • Jurassic
    • Palynology
    • stratigraphy

    Programområde

    • Programområde 3: Energiressourcer

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