Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)
Volcanic processes in the surroundings of Kadaň
Abstract
There are five volcanic hills forming natural barrier on the northern margins of the Kadaň town in northwestern Bohemia. These were formerly interpreted as maar diatremes protruded by basaltic intrusions. According to new investigations, origin of these localities was reinterpreted. Horizontally layered lava flows were recognized and these lavas were assigned to two independent source vents. Strážiště-Svatý kopeček, Prostřední vrch and Zadní vrch hills consist of a set of lava flows identical to succession of lavas at the Úhošť Hill. Therefore, these are interpreted as erosional remnants of single lava-filled channel. The channel was originally partly filled with lahar deposits, currently preserved beneath described lava flows. Two other hills - Bystřický vrch and Zlatý vrch - are built up of basanite lavas produced from Jelení vrch scoria cone located 1 km to the east.
