Palynology of the marine Jurassic formations in the Vardekh1ft ravine, Jameson Land, East Greenland

The microfloras of the marine Neill Klinter, Vardekl0ft, and lower Hareelv Formations have been in­vestigated from exposures in the Vardekl0ft ravine at Hurry Inlet, eastern Jameson Land. The samples have yielded abundant spores and pollen as well as dinoflagellate cysts. Based on the occurrence of spores and pollen four microfloral assemblages (A-D) have been established. Biostratigraphic correlations based on the dinoflagellate occurrences as well, have been proposed by comparison with microfloras of Europe. Assemblage A and B of the Neill Klinter Formation have been correlated to (Late) Pliensbachian to Early Toarcian. The typical assemblage C microfloras are restricted to the Vardekl0ft Formation and is correlated to the Middle-Late Bajocian at the base of the formation and to the (Early) Callovian at the top. The assemblage D has been recovered from the lower Hareelv Formation. Based on the dinoflagel­late cysts the deepest samples available from this formation may be correlated to the Oxfordian corda­tum(-plicatilis) Zone while the upper part of the section in Vardekl0ft is referred to the Early Kimmerid­gian. The composition of the microfloras indicates marine to brackish palaeoenvironments with considerable variations in the terrestrial derived palynomorph groups. Comparison with age equivalent microfloras of Svalbard and And0ya, Northern Norway, and the Middle Europe indicates the stratigraphical distribution of some spores to be palaeolatitudinally control­led.