The Permian and Triassic in the Albanian Alps

Abstract

The sedimentary succession of the Permian to Middle Triassic of the Albanian Alps is described, as part of the eastern Adria passive margin towards the Tethys. A carbonate ramp deepening towards NE in present day coordinates developed during the Middle Permian and was affected by block faulting with the deposition of carbonate breccia. The Early Triassic was characterized by intense terrigenous deposition with several cobble conglomerate units up to 80 m-thick, and by oolitic carbonate shoals. The fine clastic deposition ended gradually during the earliest Anisian and a wide calcarenitic ramp occupied the area, with small local carbonate mounds. Basinward, the red nodular limestone of the Han Bulog Formation was interbedded with calcarenitic material exported from the ramp. Drowning to more open conditions occurred towards the end of the Pelsonian. Subsequently, cherty limestone and tuffitic layers spread over the entire area. Towards the end of the Ladinian, with the end of the volcanic activity, red pelagic limestone was deposited locally for a short period. By the latest Ladinian most of the area returned to shallow-water conditions, with a peritidal carbonate platform. In the Theth area, in contrast, a basin with black organic-rich dolostone and limestone developed which seems to be unique in that part of the Adria passive margin. The occurrence of cobble conglomerate units in the Lower Triassic testifies to very active block faulting and high accommodation, not yet described for the area.

SPATHIAN (LOWER TRIASSIC) CONODONTS FROM THE <em>TIROLITES CASSIANUS</em> BEDS IN PALEOTETHYS-ISSUED NORTH DOBROGEA OROGEN (ROMANIA)

“…In Europe, I. collinsoni is rare and has a very limited distribution; to date, there has been a report of a single specimen from the Southern Apennines in Italy (Mietto et al 1991), which was collected in west Anatolia in Turkey (Steuber 1992) and on Crete in Greece (Krahl et al 1983). There are no reports of this taxon in the Dinarides (Kolar-Jurkovšek & Jurkovšek 2015) nor in the eastern Albanides (Meço 1999;Gaetani et al 2015). It should be mentioned here that certain Early Triassic taxa have very limited geographic distributions, confined to European localities, i.e.…”

Permo-Triassic Evolution of the Adria Margin in Northern Albania

“…Sandstone, marl, dolostone and oolitic limestone; thickness of about 200 m (Dimitrijević 1997). The age of overlaying "Anisian Flysch" of Dimitrijević M. (1967) should be reconsidered, being possibly Early Triassic in age (Gaetani et al 2015). -Middle Triassic.…”

“…They represents the southern tip of the Karst Zone (Auboin et al 1970), presently known as Dinaric Carbonate Platform or included in the wider Adriatic/Dinaric Carbonate Platform (Karst Zone/ Dinaric Carbonate Platform (Auboin et al 1970;Dimitrijevic MD 1997;Radoicic and d'Argenio 1999;Gawlick et al 2012). They stratigraphy has been recently revised (Gaetani et al 2015).…”