Lačný A., Putiška R., Vojtko R., Dušeková L., Mojzeš A., Brixová B., Zvara I., Andrássy E. & Magdolen P., 2021: Study of dolines of the Cajla Karst originated on covered karst landform (Malé Karpaty Mts., Western Carpathians). Acta Geologica Slovaca, 13, 2, 177–190.

Study of dolines of the Cajla Karst originated on covered karst landform (Malé Karpaty Mts., Western Carpathians)

Alexander Lačný^1,2, René Putiška³, Rastislav Vojtko², Laura Dušeková⁴, Andrej Mojzeš³, Bibiana Brixová³, Ivan Zvara³, Erik Andrássy³ & Peter Magdolen⁵

¹State Nature Conservancy of the Slovak Republic, Little Carpathians Protected Landscape Area, Štúrova 115, 900 01 Modra, Slovakia; alexander.lacny@sopsr.sk
²Department of Geology and Palaeontology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovakia; alexander.lacny@uniba.sk; rastislav.vojtko@uniba.sk
³Department of Engineering Geology, Hydrogeology and Applied Geophysics, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovakia
⁴State Nature Conservancy of the Slovak Republic, Slovak Caves Administration, Hodžova 11, 031 01 Liptovský Mikuláš, Slovakia
⁵Cave Group Speleo Bratislava, Košariská 4100, 900 55 Lozorno, Slovakia

Abstract

Presented research investigate the phenomenom of karstic area remarkable with specific karst landform, so-called covered karst. So far, not much attention has been paid to this particular type of karst in Slovakia, so the aim of the research is to bring new informations about it, especially about dolines formation and their origin. Study was focused on 50 dolines following the distinctive NE–SW line in the study area - the Cajla Karst located in the Malé Karpaty Mts., Slovakia. To understand the process of the formation of dolines in the covered karst and to distinguish the dolines from the pits resulted from anthropogenic processing via mining, several geophysical methods were adopted to prove the doline origin (soil radon emanometry, electric resistivity tomography and seismic refraction tomography). For identification of dolines and subsequent processing, the lidar data were used. The formation of studied dolines was controlled by lithological-tectonic properties of the bedrock, especially along the contact zone of karstic (Triassic carbonates) and non-karstic rocks composed of quartzite and crystalline basement. The resulting shape was also influenced by infiltration of surface water into the underground.

Key words: Cajla Karst, dolines, covered karst, lidar data, electric resistivity tomography, seismic refraction tomography, soil radon emanometry

Manuscript received: 2021-01-03

Revised version accepted: 2021-05-27