Anisian to Carnian carbonate platform facies and dasycladacean biostratigraphy of the Aggtelek Mts, Northeastern Hungary

Abstract

In the area of the Aggtelek-Rudabanya Mts, limestone and dolomite of reefal and lagoonal facies were formed on a platform, which was continuously deepening from the beginning of the Middle Triassic. The bulk of the limestone is represented by lagoonal formations, extremely rich in dasycladaceans. The reefal formations are of patch reef origin. The almost continuous development and the remarkable abundance of fossils permitted the elaboration of an Anisian-Carnian dasycladacean biostratigraphy. On the basis of investigations 4 assemblage zones could be separated in the Anisian, and 6 in the Ladinian-Carnian. In establishing this biostratigraphy dasycladacean investigations of similar facies areas of the Silica Plateau and the Northern Calcareous Alps were also taken into account.