Aalenian to Cenomanian terrestrial palynofloras of SW Scania, Sweden
I describe dispersed miospore assemblages recovered from 35 drill-core samples from Höllviken 2, Norrevĺng 1, and Svedala 1 wells, all in SW Scania, Sweden. Over eighty taxa of pollen and spores, ranging from the Aalenian to the Cenomanian were identified. Four pollen/spore zones have been defined on the basis of key taxa and on the variation in the frequency of miospore groups. The palynofacies analysis indicates that a continental depositional environment prevailed during the Aalenian in Scania. A stratigraphic hiatus existed from the Aalenian then on until the Valanginian, when the depositional environment subsequently became marine. The marine conditions continued until the Cenomanian. A gradual increase in marine palynomorphs is found in the Cenomanian succession, indicating a transgression. On the basis of the palynoflora it is suggested that the vegetation consisted of cycads, conifers, pteridophytes and a very limited number of angiosperms.
Key words: Palynology, paleovegetation, paleoclimate, Cretaceous, sealevel-changes, Scania, Sweden.
Vivi Vajda [vivi.vajda@geol.lu.se], Department of Geology, Division of Historical Geology and Palaeontology, University of Lund, Sölvegatan 13, SE-223 62 Lund, Sweden.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (for details please see creativecommons.org), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.