New magnetic anomalies of the outer Capathians in NE Slovakia and their relationship to the Carpathian conductivity zone

Abstract

Hitherto unknown magnetic anomalies have been detected while assembling a magnetic picture of the Slovakian territory. An impressive magnetic anomaly was recognized in the northeasternmost part of Slovakia associated with sedimentary rocks of the flysch belt. This is a rare phe nomenon, because the flysch sequence in Slovakia typically lacks magnetic rocks. Thus, an igneous body intruded into the flysch might cause the anomaly. The shape and the character of the anomalous body suggests that its source is located at shallow depth beneath the surface. The anomaly has been modelled in 2D space. It is interpreted as a Neogene volcanic neck made of intermediate rocks. Such an interpretation is supported by results of thermometric investigation of fluid inclusions, vitrinite reflectance and fission tracks. Further minor anomalies within this area, might also be caused by small near these subvolcanic bodies. The Carpathian Conductivity Zone is located near these new observed magnetic anomalies, which therefore provide a new view on the importance of this zone. The region as a result may have potential for metalogenesis, underground storage of carbon dioxide, and hydrocarbons.