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

Malakostratigraphy of the entrance rampart of the Medvedia jaskyňa Cave (National Park Slovenský raj – Slovak Paradise)


Vojen Ložek

Geoscience Research Reports 45, 2012 (GRR for 2011), pages 219–222

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Medvedia jaskyňa - the Bear Cave is situated at the SSE edge of the karst plateau Glac at elevation 905 mina precipitous rocky slope. Its entrance rampart at the foot of an overhanging vertical limestone rock wall was exposed by excavation. It consists of collapsed wall debris of all sizes, from fine rubble (basis) to boulders (middle part), in a loamy matrix with high rates of foam sinter that dominates the middle layers. The age of the incorporated molluscan fauna ranges from Late Glacial to the medieval period. The snail communities include two components: 1) open-country species living on bare rocks and 2) woodland fauna at the foot of the rock wall. The basal layers (12-10) include open-ground species (Lateglacial-Preboreal), younger strata are dominated by demanding forest communities. The peak of humidity within the Holocene is reflected by the dominance of foam sinter and the appearance of the aquatic snail Galba truncatula in the middle section of the sequence (layers 7-5).