Geophysical Study of the Block Structure in a Rhyolite Stone Quarry

Abstract

The main purpose in the extraction of dimension stone is the efficient detachment and preservation of large, intact rock blocks from the active working in quarries. Achieving high extraction efficiency requires a comprehensive understanding of the structural discontinuities within the geological massif. The characterization of fracture networks and the assessment of rock mass integrity at depth are critical for optimizing natural resource utilization. To increase yield, improve operational efficiency, and minimize losses of non-renewable resources, geophysical survey was conducted at quarry for extraction of igneous rocks – rhyolite. The main method used in the study was Electrical Resistivity Tomography (ERT), a non-invasive geophysical technique for mapping the subsurface geological structure. This method enables the spatial analysis of electrical resistivity variations within rock formations, providing high-resolution data on lithological composition, fracturing patterns, and groundwater saturation, all of which are essential for informed decision-making in quarrying operations The study confirms the effectiveness of Electrical Resistivity Tomography (ERT) as a geophysical exploration method for quarrying igneous rock blocks, specifically rhyolites. The obtained data can serve as a valuable resource for future extraction planning of the quarries and geological assessments of the area.