Informace o publikaci
Palaeoecology of Middle Badenian Limestones from Stupava-Vrchná Hora (Vienna Basin, Slovakia) based on analyses of the coralline algal species (Rhodophyta, Corallinales, Sporolithales)
| Autoři | |
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| Rok publikování | 2012 |
| Druh | Další prezentace na konferencích |
| Fakulta / Pracoviště MU | |
| Citace | |
| Popis | Lithothamnion limestones of Vrchná Hora are known since second half of 19th century, when Adrian (1863) marked them on geological map of 1:144 000 scale. Coralline algae (Rhodophyta, Corallinales, Sporolithales), as main component of these limestones, are dominant in Cenozoic shallow water ecosystems, and many identified species from Vrchná Hora still inhabit recent seas. They provide a usefull paleoecological tool in interpretations of Badenian limestones from Vrchná Hora. Nine species of algae were dscribed: Lithothamnion sp., L. minervae, L. ramosissimum, L. valens, Phymatolithon calcareum, Mesophyllum sp., Lithophyllum sp., Spongites sp. a Sporolithon sp.. Three of described species are known also as recent species: Lithothamnion minervae, Lithothamnion valens a Phymatolithon calcareum. Skeletal association corresponds to common warm temperate to subtropical rhodalgal biofacies. Limestones of Vrchná Hora were deposited in inner shelf, bellow fair weather wave level, in dynamic environment with oscilations of sea level. Higher dynamic conditions caused reworking of sediment, abrasion of endolithic and encrusting organisms from algae surface, and winnoving of micrite. Algae could overgrow damaged thalli in episodes of lower dynamic environment. Maerl beds of Vrchná Hora evolved in places with favourable conditions. Higher sediment input caused their burrial. |
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