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Although the Sudetes are considered tectonically stable, research conducted in the Nied\u017awiedzia Cave in Kletno by dr. Jacek Szczygie\u0142, from our institute, indicates that at least 5 strong earthquakes (M>6) have occurred in the eastern Sudetes during the last 300 thousand years. This record was reconstructed mainly thanks to radiometric dating of damaged speleothems, but due to laboratory tests carried out together with Dr. Maciej Mendecki (also from IoES) on destroyed speleothems. According to the modeling, the most likely seismic source was the Sudeten Marginal Fault. However, reactivation of the faults cutting the cave cannot be ruled out, as kinematic analysis of these faults indicated their late Cenozoic activity. The research was conducted in cooperation with Dr. Artur Sobczyk (IGS UoWr) and Prof. Helena Hercman and Prof. Micha\u0142 G\u0105siorowski from the Institute of Geological Sciences, Polish Academy of Sciences.<\/p>\n
The research was funded from the NCN MINIATURE project: Analysis of deformed speleothems from the Nied\u017awiedzia Cave in Kletno as a tool for palaeoseismic studies<\/p>\n
Szczygie\u0142, J.,<\/strong> Sobczyk, A., Hercman, H., Mendecki, M. J.,<\/strong> & G\u0105siorowski, M. (2021). Damaged Speleothems and Collapsed Karst Chambers Indicate Paleoseismicity of the NE Bohemian Massif (Nied\u017awiedzia Cave, Poland). Tectonics<\/em>, 40<\/em>(3), e2020TC006459. https:\/\/doi.org\/10.1029\/2020tc006459<\/p>\n Sobczyk, A., & Szczygie\u0142, J.<\/strong> (2021). Paleostress reconstruction of faults recorded in the Nied\u017awiedzia Cave ( Sudetes ): insights into Alpine intraplate tectonic of NE Bohemian Massif. International Journal of Earth Sciences<\/em>, 0123456789<\/em>. https:\/\/doi.org\/10.1007\/s00531-021-01994-1<\/p>\n [\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”4164″ img_size=”full” alignment=”center”][\/vc_column][\/vc_row]<\/p>","protected":false},"excerpt":{"rendered":" [vc_row][vc_column width=”1\/2″][vc_column_text] Although the Sudetes are considered tectonically stable, research conducted in the Nied\u017awiedzia Cave in Kletno by dr. Jacek Szczygie\u0142, from our institute, indicates that at least 5 strong earthquakes (M>6) have occurred in the eastern Sudetes during the last 300 thousand years. This record was reconstructed mainly thanks to radiometric dating of damaged […]<\/p>\n