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Petroleum Systems of the Adriatic Offshore, Croatia

The Adriatic offshore of Croatia extends from the Istrian peninsula in the northwest to the Dubrovnik offshore area in the southeast and from the Croatian coast to the offshore boundary with Italy. The Adriatic offshore (Adria) represents a part of the Apulian continental plate placed within the Tethys ocean between Africa and Europe for the most of the Mesozoic age. Adria became a part of the alpine orogenic system by effective closure of Tethyan oceanic realms and associated basins in the Late Cretaceous and by the collision with the Dinarides to the east, and Apennines to the west, during Miocene and Pliocene times. The structural, stratigraphic and especially thermal complexity of this area, as well as the variety of hydrocarbon types enable the division of this part of the Adriatic offshore into two major petroleum systems: 1) gas-bearing siliciclastics (and subordinate fractured Mesozoic carbonates) of the Pliocene-Pleistocene molasse depression (foredeep) in the northern part of the Adriatic offshore and 2) insufficiently explored, but very promising oil discovery within Cretaceous carbonate-evaporite complex of the Adria carbonate platform

petroleum system; Adriatic offshore; source rock

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