Reflection seismic imaging to unravel subsurface geological structures of the Zinkgruvan mining area, central Sweden

• Reflection data image complex ore-bearing horizon. Mixed recording sensors and setup were instrumental for deep imaging. Interpretation benefited from well-log geological constraints. Cost-effective targeting is possible in the Bergslagen district. The Zinkgruvan mining area located on south-eastern part of district, one three major mineral producing regions Sweden. In this study, we present results (P1, P2 P8) reflection seismic profiles each approximately 3000 m-long crossing Zn-Pb-Ag-(Cu) area. P1 was acquired using cabled geophones with 10 m receiver source interval crossed features. other two (P2 by wireless recorders 20 ran perpendicular to P1. Through a special processing workflow adapted dataset, good quality sections obtained along these profiles, although high noise level due voltage electric power lines present. interpretations constrained (1) P-wave velocity density series downhole logging measurements, (2) 3D forward traveltime modelling both pre- post-stack domains, (3) geophysical observations available site. Despite notably geology, processed clearly reveal horizontal gently dipping reflections associated known formations. Results indicate that most structures lithological contacts dip or plunge northeast, including targeted Formation. survey are encouraging regarding potential method base-metal exploration Sweden particular It shows resolving methods imaging cost-effective environmentally-friendly way.