The importance of tonstein from the Coal Seam 610 as the correlation horizon in the southwestern part of the Upper Silesian Coal Basin

Abstract

Based on the similarity of discussed rocks from the “1-Maja” Mine and “Moszczenica” Mine and their stratigraphic position an assumption can be made that they belong to the same horizon. Accordingly, the upper section of the Poręba Beds in the region of the “Moszczenica” Mine should be verified for the purpose of correlation. Simultaneously, results of the author's study and those of the Czech author's seem to indicate that transport of pyroclastic material to the peat swamp of the Coal Seam 610 could take place from the W-E or the WSW-ENE directions.