LATE JURASSIC RADIOLARITES IN THE SUB-OPHIOLITIC MELANGE OF THE FRUSKA GORA (NW SERBIA) AND THEIR SIGNIFICANCE FOR THE EVOLUTION OF THE INTERNAL DINARIDES

The Fruska Gora in north-western Serbia exposes the northernmost surface occurrences of ophiolites that derive from the obduction of the Vardar Ocean over the Adriatic continental margin. The late Oxfordian -early Kimmeridgian to late Kimmeridgian -early Tithonian radiolarians were determined from the blocks of radiolarites that constitute part of the sub-ophiolitic melange along the southern flanks of the mountain. The newly obtained ages represent the youngest so-far determined radiolarites ages in this segment of the Dinarides. The melange formation postdates the obtained ages of radiolarian assemblages, and it plausibly occurred during the latest Jurassic -earliest Cretaceous obduction-related thrusting in the Internal Dinarides.