Underthrusting was followed by exhumation and the deposition of Late Cretaceous-Paleogene sediments. D1 is correlated with the initial closure of the Vardar ocean by top-to-the-W to NW ophiolite obduction and the underthrusting of the Pelagonian margin below the oceanic upper plate. The first phase of tectonic burial and exhumation (D1) is characterized by NW-SE tectonic transport, greenschist facies metamorphism, and Early Cretaceous (~105-135Ma) 40 Ar/ 39 Ar white mica single fusion ages. Review of existing data sets from neighboring regions shows that both deformation phases can be correlated along strike up to the Dinarides. Two major progressive phases of ductile deformation are documented, which are related to distinct episodes of tectonic burial and exhumation of the Pelagonian continental margin, which was facing the Neotethys/Vardar ocean. We have investigated subduction-exhumation processes in the Pelagonian zone, exposed on the Northern Sporades islands (Aegean Sea) related to successive episodes of ocean-continent and continent-continent convergence through integrating multiscale structural analysis, metamorphic petrology, and white mica 40 Ar/ 39 Ar dating.
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