Early to Late Bajocian age of the “black flysch” (Szlachtowa Fm.) deposits: implications for the history and geological structure of the Pieniny Klippen Belt, Carpathians

Abstract

The "black flysch" de pos its (Szlachtowa For ma tion at Podubocze near Czorsztyn in Po land), at trib uted so far to the Pieniny Klippen Basin suc ces sions, and at Hauszowa in Po land as well as at Kamienka in East ern Slovakia, at trib uted to the Grajcarek Suc ces sion of the Magura Ba sin, have yielded rich dinoflagellate cyst as sem blages con sist ing of forms both re de pos ited (from Up per Tri as sic to Aalenian) and in dig e nous (Lower Bajocian to Up per Bajocian). An Early to Late Bajocian age of the de pos its in ves ti gated is thus in di cated, and this along with other strati graphi cal, sedimentological and tec tonic data in di cates that all the de pos its in ques tion rep re sent the early stages of de vel op ment of the Magura Ba sin. The for ma tion of "black flysch" de pos its was pos si bly re lated to the Early Bajocian up lift of the Czorsztyn Ridge which re sulted from the open ing of the Magura Ocean. The oc cur rence of the de pos its of the Magura Ba sin be low the overthrusted de pos its of the Klippen Ba sin (Czorsztyn Unit) in the area of study re sults in a marked change in the struc tural in ter pre ta tion of the Pieniny Klippen Belt.