Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)

The palaeoecology of the Cypris Formation based on the micropalaeobotany (Sokolov Basin, Miocene, Czech Republic)


M Konzalová, Jiřina Dašková

Geoscience Research Reports 43, 2010 (GRR for 2009), pages 143–149
Map sheets: Sokolov (11-23)

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Results of the studies of microscopic organic palynodebris are presented here. They can put new insights in the history of the Cypris palaeolake clayey deposits. The green colonial and oil forming microalgae of Botryococcus Kutzing are the most characteristic microfossils in the studied sequence. They are often preserved in "subfossil" state. Their frequency and retained features indicate the alginitic clay containing immature OM. It is evident particularly in the top and the upper part of the core profile. They were associated with abundant coniferous pollen produced by Pinaceae, blown on the open paleolake. General pollen spectrum: the low content of wind-pollinated shrubs and trees (AP) is striking, while the families as Oleaceae, probably Salicaceae occur frequently. Symplocos, Cornaceae, Araliaceae and even of the profile. Palmae are also present. They characterize the middle and lower parts of the profile. Poaceae (Gramineae) making often regularly the border of the recent lakes, are almost absent, but exotic Restionaceae were recorded. Halophile pollen (Chenopodiaceae) occurred in the lower segment