Indicators of recent geodynamic activity in the Książ Castle area (Świebodzice Unit, Sudetes) in the light of structural analysis and geodetic measurements

Abstract

Abstract. Indicators of r area are registered by the measuring instruments of the SRC PAS (Space Research Centre of Polish Academy of Sciences) Geodynamic Laboratory tal pendulums (since 1974) and over 10 years of observations from water-tube tiltmeters (since 2002) have documented irregularly repeatable strong signals related to the relative displacement of blocks in the rock substrate, d. These signals have dip (rotational) and vertical strike-slip components. Also, the presence of a horizontal strikeslip component is evidenced by geometric anomalies (deformations) of the the orientation of the main faults in the area. Recent geodynamic activity is documented by destruction of the construction elements in the castle complex. Instrumental indicators of movement, geodetic measurements and structural analysis of the rock massif have allowed for constructing a model showing the main unconformity surfaces in the analysed rock massif. Sinistral, NE SW and ENE WSW-oriented strike-slip faults prevail in the laboratory corridors, along with perpendicular WNW ESE and NW SSE-oriented dextral and normal faults. Most dislocations are accompanied by zones of intense cataclasys, secondary silification, and Fe and Mn mineralization. Generally, the faults were formed due to reactivation of joint fractures cutting the steeply N-and S-dipping (at 75

Modelling of underground objects and geological-tectonic structures from a point cloud: application of the developed models in studies of geodynamic processes

“…Correlation of the constructed model with the results of in situ measurements of the tectonic structures [12,22] has resulted in distinguishing the position of several tens of discontinuity zones. Application of Autodesk 3DS Max software for each dislocation zone resulted in determining study sites in the 3D space.…”

Fractal discrete fracture network modeling of radon gas concentration in underground tunnels under Książ Castle in Poland

“…The Książ Formation within the Książ massif displays significant deformation (Fig. 1a), and the faults indicate recent activity (Kasza et al 2018).…”

Assessment of occupational exposure from radon in the newly formed underground tourist route under Książ castle, Poland

“…According to the bilateral agreement, part of the vaults house the Geodynamic Laboratory of the Space Research Centre (LG CBK). This part represents a separate area excluded from tourist use and set aside for the use of the Polish Academy of Sciences (Kaczorowski 1999a(Kaczorowski , b, 2009Kaczorowski et al 2012Kaczorowski et al , 2018Kasza et al 2014Kasza et al , 2018. Since 2014, the Space Research Centre of the Polish Academy of Sciences has been cooperating with Wrocław University of Science and Technology to conduct joint measurements of radon activity concentrations and, in parallel, of any changes in the rock mass kinetics (Fijałkowska-Lichwa nad Przylibski 2016;Przylibski et al 2020).…”