The depth range and possible continuation of the Havranicka jaskyna cave system revealed by geological methods and electrical-resistivity tomography (ERT), the Male Karpaty Mts., Slovakia

摘要

Geological (sedimentology, structural geology) and geophysical (electrical-resistivity tomography; ERD) methods were carried out to investigate the possible continuation and depth range of the Havranicka jaskyna cave, situated in the Male Karpaty Mts. (western part of Slovakia). The origin of the investigated cave is connected with the N-S trending fault, activated during the Pliocene-Quaternary. The cave system is developed in Guten-stein Fm., built dominantly of limestone. According to XRD analyses, the subjacent Gutenstein Fm. dolomite interferes with the cave system in the form of boudins, which modifies the development of the cave in its lower parts. However, the boudins do not affect the course of the cave system. Based on ERT measurement a 3D model of the cave was produced, being complemented by the cave's polygonal traction points. The primary geophysical measurements in 2010 contributed to discovery of new passages in the cave system, so the application of used methodology also in other caves world-wide would be meaningful.