Upper Triassic and Lower Jurassic beds in the Podutik area near Ljubljana (Slovenia)

Abstract

In the Podutik area near Ljubljana in a very shallow lagoon environment of the restricted shelf on the Dinaric carbonate platform the Main dolomite formation originated in Norian and Rhaetian. In the northern part of the carbonate platform on the opened shelf area the Dachstein limestone has been deposited. In the studied area both above-mentioned lithologic units occur in the typical Lofer development. Due to lack of fossils the Rhaetian stage is not separated from the Norian one. The boundary between the Triassic and the Jurassic period is marked chiefly by the gradual lithologic transition. It is focused into the zone, where the Lofer limestone with large megalodontids passes into the limestone with characteristically dark red calcite veinlets, intercalations of oolitic and onkolitic limestone and algae Palaeodasycladus mediterraneus Pia.