engleski

Marine to continental depositional systems of Outer Dinarides foreland and intra-montane basins (Eocene-Miocene, Croatia and Bosnia and Herzegovina)

The Dinarides form a mountain chain extending in NW–SE direction along the northeastern Adriatic coast, connecting the Southern Calcareous Alps to the north with the Albanides and Hellenides-Taurides to the south. The mountain chain consists of a strongly tectonized, thick rock succession spanning a stratigraphic range from Carboniferous to Quaternary. The zone close to the Adriatic coast - where the field-trip area is located - is known as the Outer or Karst Dinarides, composed mainly of carbonate rocks. The more inland zone, between the Karst Dinarides and the Pannonian Basin, is known as the Inner Dinarides, composed mainly of deeper-marine sedimentary rocks and ophiolites. Although the carbonate deposition commenced in Carboniferous and significantly increased in the Late Permian and Triassic, the major part of the carbonate deposits, which belong to the Adriatic Carbonate Platform (AdCP), formed during Jurassic and Cretaceous. The AdCP formed on the Adria Microplate, recording disintegration of a vast para-Tethian carbonate platform into several smaller ones during the late Early Jurassic (Toarcian). The AdCP was a relatively stable shallow-marine area until the Late Cretaceous, when it started to be gradually deformed, tectonically disintegrated and mostly emerged by SW–NE oriented compression. More or less continuous shallow marine sedimentation across the K/T boundary is recorded only at the northwestern and southeastern margins of the AdCP. Deposition during Eocene, Oligocene and Miocene was significantly influenced by tectonic deformation of the former Adriatic Carbonate Platform. Therefore, although Outer Dinarides are famous for their thick succession of shallow-marine carbonate rocks, which were already main topic of numerous field trips, including several excursions at two IAS meetings (Split 1983, Opatija 2003), we believe that post-platform development is also very interesting. This field trip encompasses three different Cenozoic successions deposited above the Mesozoic platform carbonates: (1) Massive Cenozoic carbonate breccia of the Karst Dinarides: the Velebit breccia, (2) The Eocene-Oligocene Promina Beds of the Dinaric foreland basin in northern Dalmatia, and (3) Miocene intra-montane lacustrine basins of Outer Dinarides (Croatia and Bosnia and Herzegovina).

Outer Dinarides ; Marine deposits ; Continental deposits ; Foreland basins ; Intra-montane basins

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