Volcanogenic interlayer (tonstein) in the Main coal seam of the Nýřany group of seams (Asturian) in the Plzeň region

Abstract

The present study is the contribution to the knowledge of volcanic activity in the Nýřany Member of the Kladno Formation (Asturian to Cantabrian).

Keywords

• Plzeň Basin
• Nýřany Member
• Asturian
• sapropel coal
• volcanic interlayer