Ján Madarás

Sandbersko – pajstunsky geopark (SAPAG) – brana do geologickej historie Malých Karpat Sandbersko – pajstunsky geopark je stvrtým realizovaným geoparkom na uzemi Slovenska, prvým na zapadnom Slovensku – v južnej casti Malých Karpat. Nachadza sa v geologicky mimoriadne atraktivnom masive Devinskej Kobyly a v Borinskom krase v okoli znamej zrucaniny hradu Pajstun a krasovej doliny Prepadle. Cieľom geologickeho projektu je predstaviť navstevnikom geoparku atraktivne geologicke a kulturno-historicke dedicstvo regionu. Su to geologicke, paleontologicke lokality, geomorfologicke a krasove fenomeny, doležite historicke objekty, technicke a banicke relikty z cias ťažby ciernych bridlic v Marianke a prieskumných prac manganoveho zrudnenia v Malých Karpatoch. Jedným z hlavných výstupov projektu je 10 informacných panelov v slovenskom a anglickom jazyku na turisticky atraktivnych lokalitach: 1. uvodný infopanel s geologickou mapou uzemia geoparku, 2. Abrazna jaskyňa, bralo Slovinec (obr. 2), 3....

The Western Carpathians and Himalayas belong to the same global Alpidic orogenic system, which is the result of euroasian plate collision with the continental fragments of gondwana after closing of the Tethys ocean. Having the field experiences from both distant mountain ranges of the same orogenic system and applying the principles of comparative tectonics, they were evaluated and compared in the paper. generaly, they have the same collisional structural-tectonic style, but there are as well many peculiarities and differences resulting from the specific conditions of collision in the Western Carpathian and Himalayan areas. The Western Carpathians structure is a result of gradual alternation of variscan (Hercynian; Paleozoic), Paleo-Alpine (Mesozoic) and Neo-Alpine (Cenozoic) convergent and divergent plate tectonic processes, while the Himalayas represents purely Neo-Alpine Cenozoic structure evolved during the continual long lasting and rapid plate convergence. despite the geosutur...

Ambient radioactivity originates mainly from natural sources and materials (rocks and soils, building and other man-made materials, and cosmic radiation), and less frequently from artificial radionuclides. A geoscientific comparative study of the geological structure of the Alpine-Carpathian and Himalayan mountain range systems primarily focused on the area of structure geology, tectonics, stratigraphy and petrology in connection with the in-situ sampling of magnetic susceptibility and radioactivity at rock outcrops was also utilized to perform continual monitoring and acquisition of the equivalent gamma dose rate values in the air of the surrounding environment. A Geiger-Müller dosimeter was used for continual recording at a sampling frequency of 2 minutes. Simultaneously, a data-logger was used to record the ambient temperature, humidity and pressure values at a sampling frequency of 4 minutes. The measurements cover the entire tour, in particular, Bratislava, Slovakia (42.5 hours...

This paper describes palaeostresses calculated from fault-striae data, the inferred palaeostrain patterns and determines the inter-relation of the compression and extension during the Tertiary development of the West Carpathians. The calculated stress and inferred strain patterns for the Palaeogene–Burdigalian indicate that the ancestral West Carpathians formed a more-or-less straight orogenic belt. This belt underwent contraction and uplift in its narrow

Late Quaternary fault activity in the Western Carpathians: evidence from the Vikartovce Fault (Slovakia)The Cenozoic structure of the Western Carpathians is strongly controlled by faults. The E-W striking Vikartovce fault is one of the most distinctive dislocations in the region, evident by its geological structure and terrain morphology. This feature has been assumed to be a Quaternary reactivated fault according to many attributes such as its perfect linearity, faceted slopes, the distribution of travertines along the fault, and also its apparent prominent influence on the drainage network. The neotectonic character of the fault is documented herein by morphotectonic studies, longitudinal and transverse valley profile analyses, terrace system analysis, and mountain front sinuosity. Late Pleistocene activity of the Vikartovce fault is now proven by luminescence dating of fault-cut and uplifted alluvial sediments, presently located on the crest of the tilted block. These sediments m...

... MARIAN PUTIS 1 , ALEXANDER B. KOTOV 2 , IGOR PETRIK 3 , SERGEI P. KORIKOVSKY 4 , JAN MADARAS 5 , EKATHERINA B ... University, Faculty of Natural Sciences, Department of Mineralogy and Petrology, Mlynska dolina, 842 15 Bratislava, Slovak Republic; putis@fns ...

We present seismological and geological interpretations of the weak earthquake that occurred on April 6th, 2022 with epicenter between Šalková (suburb of Banská Bystrica) and Slovenská Ľupča. The local magnitude of the event was ML = 2.1. The earthquake was macroseismically observed in 21 localities (101 reports) on the territory of Slovakia with epicentral intensity 4° EMS-98. The estimated focal mechanism indicates a normal fault in approximately E-W direction. This favours the theory of an extension regime in the Čertovica tectonic zone.