Neotectonics of the Inner Western Carpathians: Liptovsky Ján area, case study (northern slopes of the Nízke Tatry Mts., Slovakia)

摘要

The neotectonic study results of the Liptovsky Ján area and its implications for neotectonic development of the Inner Western Carpathians are presented. A broad spectrum of methods was used e.g., geological mapping, structural analysis, boreholes log data, morphotectonic analyses, transverse valley profiles, and orientation of cave corridors. Three groups of normal faults active during the Quaternary were identified. The youngest faults are oriented generally in the N–S direction. The older fault groups are represented by the WNWESE and NE–SW directions as well. The successive arrangement of faults suggests change of the stress field from the N–S to the E–W oriented extensional axes under the tension condition in the study area during the Pleistocene. Comparison of obtained results with other studies revealed that stress field within the Inner Western Carpathians realm was changed during the Quaternary, from tension oriented generally in N–S direction to orogen-parallel extension i.e. parallel to the Inner Western Carpathian arc.