Search for Spherules in Crandallite Interbed and Surrounding Layers in Bílina Coal Mine, North Bohemia

Abstract

Search for Spherules in Crandallite Interbed and Surrounding Layers in Bílina Coal Mine, North Bohemia

Keywords

• WRD
• Martin Košťák 2 21 95 14 76 spherula
• glass
• vulcanic
• crandallite interbed
• North Bohemia Brown Coal basin
• Miocene
• eolic grain
• interference figure