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Ana Mladenović, Jelena Ćalić

Speleo‐morphology and tectonic processes – What can be seen in slowly deforming regions?

18th International Congress of Speleology, Savoie Mont Blanc, 24-31 July 2022.

International Union of Speleology

2022.

There are a lot of methods used to determine tectonic process active in a region, and they vary depending on the purpose of the research. However, a number of them cannot be used in slowly deforming regions, because the effects of active tectonic process on the rocks in such regions could be negligible. This is especially true for the recently active tectonics in such regions, since most of the recently active tectonic structures never reach the surface. Because of that, studying tectonic structures inside karst caves can give valuable information about active tectonic processes. Here, we present evidence about the youngest and recently active faults in the area of the central part of the Carpatho‐Balkan orogen, located in Eastern Serbia, based on data from the karst cave Mala Bizdanja. Age of activity of faults mapped inside the cave was determined based on indicators of faults that cut speleothems, forming fault breccias that incorporate broken speleothems, and based on speleogenetic considerations. Also, samples for radiometric dating have been collected, that will help to quantify fault activity rate. Preliminary results show that the research area is characterized by strike‐slip tectonics, with recently active NW‐SE‐ trending sinistral faults, suspected to be also seismically active.

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978-2-7417-0694-6

https://uis-speleo.org/wp-content/uploads/2022/09/ACTES_CONGRES_UIS_WEB_VOLUME_4.pdf

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