The lithostratigraphical features and recent discoveries of calcareous nannofossils from the Firza Flysch, Mirdita region (northern Albania) are reported. The Firza Flysch, with the Simoni (=Mirdita) Melange, represents the sedimentary sequences overlying the Albanian ophiolites. The Firza Flysch can be roughly subdivided in three members: the lower member is characterized by the prevalence of ophiolite-derived pebbly sandstones and mudstones, whereas the middle and upper members show calcareous and mixed composition turbidites. Nannofossils imply uppermost Tithonian-late Valanginian age of whole sequence of the Firza Flysch. The collected data suggest the Firza Flysch deposits may be derived from erosion of the Albanian ophiolites during their Late Jurassic-Early Cretaceous tectonics. Age and characteristics of the Firza Flysch can be correlated with the ophiolite-derived deposits from neighbour ophiolite belts of Bosnia and Greece.
Litho- and biostratigraphy of the Firza Flysch, Ophiolite Mirdita nappe, Albania
MARRONI, MICHELE;PANDOLFI, LUCA;
1996-01-01
Abstract
The lithostratigraphical features and recent discoveries of calcareous nannofossils from the Firza Flysch, Mirdita region (northern Albania) are reported. The Firza Flysch, with the Simoni (=Mirdita) Melange, represents the sedimentary sequences overlying the Albanian ophiolites. The Firza Flysch can be roughly subdivided in three members: the lower member is characterized by the prevalence of ophiolite-derived pebbly sandstones and mudstones, whereas the middle and upper members show calcareous and mixed composition turbidites. Nannofossils imply uppermost Tithonian-late Valanginian age of whole sequence of the Firza Flysch. The collected data suggest the Firza Flysch deposits may be derived from erosion of the Albanian ophiolites during their Late Jurassic-Early Cretaceous tectonics. Age and characteristics of the Firza Flysch can be correlated with the ophiolite-derived deposits from neighbour ophiolite belts of Bosnia and Greece.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
