Geophysical High-resolution Characterisation of Granitic Dimension Stone Volumes

Efficient and integrated geophysical measurement set-up has been created and tested for granite quarry production planning comprising magnetic and electromagnetic measurements. Development was based on an earlier geophysics development project some years ago in Finland. Rock volume models and quality classifications are the results to be used in rock block extraction. Surveys are applicable in various scales: from formation size to subareas and in primary block scale (1000 m3). Automated interpretation is allowed by dense measurements (GPR)with associated 3-D processing. Preparatory site works can improve significantly measurement conditions and rock volume coverage.