Acid and intermediary Upper Oxfordian volcanic material transported from distant centres (probably the Eastern Alps) by bottom currents (distal turbidites, or contourites) forms intercalations in radiolarites of the Klippen Belt. The study of radiolarians (U.A. 7–8 and U.A. 9) and partly also of calcareous nanoplankton allowed to determine a wider stratigraphic span of red radiolarians (Buwald Member) — minimally Upper Oxfordian–Lower Kimmeridgian. The correlation between the thicknesses of alternating silicite and pelite beds is insignificant (0.266). Fourteen types of radiolarian preservation, various types of veinlets, the presence of spheroids and slide structures allow to reconstruct to a certain extent the processes of sedimentation and diagenesis.