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Tertiary magmatism of the Dinarides and the adjoining South Pannonian Basin (CROSBI ID 97614)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Pamić, Jakob ; Balen, Dražen Tertiary magmatism of the Dinarides and the adjoining South Pannonian Basin // Acta vulcanologica, 13 (2001), 1/2; 9-24-x

Podaci o odgovornosti

Pamić, Jakob ; Balen, Dražen

engleski

Tertiary magmatism of the Dinarides and the adjoining South Pannonian Basin

Tertiary magmatic formations are very common within the Dinarides. They largely occur within their most internal unit, i.e., the Sava-Vardar Zone and, to a lesser extent, in marginal parts of the southwestwern neighbouring Internal Dinarides, South Pannonian Basin, and Serbo-Macedonian Zone and Rhodope, respectively. Based on concordant geological and radiometric ages and pertinent petrological and geochemical data, the magmatic formations of the Dinarides can be classified as follows: 1) Eocene syncollisional granitoids related to the main Alpine deformational event ; 2) Early Oligocene post- collisional granitoids, age equivalents of the Periadriatic tonalites, related to transpressional-transtensional faulting due to Apulian indenting ; 3) Early Oligocene shoshonite and high K calc-alkaline volcanics controlled by the same tectonic processes ; 4) Egerian-Eggenburgian calc-alkaline volcanics and 5) penecontemporaneous granitoids preceding the evolution of the Pannonian Basin ; 6) Karpatian synsedimentary shoshonites related to initial extensional evolution of the Pannonian Basin ; 7) Badenian calc-alkaline volcanics related to the peak of the extensional rift magmatism of the South Pannonian Basin, and 8) post-Badenian basalts and alkali basalts related to the final synsedimentary volcanism predating the Pliocene filling of the Pannonian Basin (PB). In this review paper selected radiometric ages, petrological, major- and trace element data including Sr, Nd and O isotopic compositions are compiled in order to define each magmatic formation and give a petrological synthesis. Some of the magmatic formations are correlated with pertinent Tertiary magmatic formations of the Periadriatic Lineament in the Alps and the southeasternmost Sava-Vardar (Axios) Zone in Greece. The Tertiary magmatic formations are the result of sequential tectonic processes that took place over ca 40 Ma along the Dinaridic part of the Periadriatic-Sava-Vardar suture zone, i.e., the Africa (Apulia) and Euroasia (Tisia/Moesia) convergence area. The petrogenetic evolution of all these formations can be best explained by slightly modified slab-breakoff model recently supported by deep seismic tomography. They were largely generated by fractional crystallization from primary basalt magmas that originated by partial melting of upper mantle wedge, mainly composed of spinel and/or garnet peridotites slightly to moderately metasomatized, accompanied by crustal contamination and/or melting.

Tertiary magmatism; Dinarides; Pannonian Basin

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Podaci o izdanju

13 (1/2)

2001.

9-24-x

objavljeno

1121-9114

Povezanost rada

Geologija