engleski

Magnetic and VLF Investigations of Andesite Dikes in a Dolomite Quarry

Combined geomagnetic and VLF measurements were carried out in the area of Očura quarry, where dolomites have been exploited as buildings materials. The main goal of exploration was to discover possible andesite dikes in the area determined for extension of the exploitation, which causes very serious difficulties in exploitation process. Magnetic anomalies discovered by the magnetic measurements point to the andesite dikes. Magnetic bodies have got low resistivity which has been proved by the VLF measurements. The anomalies in the southern part of the profiles are probably caused by the andesite dike, because the interpretation results acquired by both methods are very similar. The anomalies in northern part of the profiles are probably caused by two different bodies, and nongeological causative body can not be excluded. The next step will be application of the mining methods at the positions of the magnetic and VLF anomalies, which includes shallow bore holes and digs.

geomagnetic measurements; VLF; dolomite

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