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Paleogene–early Miocene igneous rocks and geodynamics of the Alpine-Carpathian-Pannonian-Dinaric region: An integrated approach

By
I. Kovács
I. Kovács
1
Lithosphere Fluid Research Laboratory, Department of Petrology and Geochemistry, Eötvös University, Budapest, H-1117, Pázmány Péter sétány 1/C, Hungary; and Research School of Earth Sciences, Australian National University, Building 61 Mills Road, Canberra, ACT 0200, Australia
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L. Csontos
L. Csontos
2
Department of Physical and Historical Geology, Eötvös University, Budapest, H-1117, Pázmány Péter sétány 1/C, Hungary
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Cs. Szabó
Cs. Szabó
3
Lithosphere Fluid Research Laboratory, Department of Petrology and Geochemistry, Eötvös University, Budapest, H-1117, Pázmány Péter sétány 1/C, Hungary
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E. Bali
E. Bali
3
Lithosphere Fluid Research Laboratory, Department of Petrology and Geochemistry, Eötvös University, Budapest, H-1117, Pázmány Péter sétány 1/C, Hungary
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Gy. Falus
Gy. Falus
3
Lithosphere Fluid Research Laboratory, Department of Petrology and Geochemistry, Eötvös University, Budapest, H-1117, Pázmány Péter sétány 1/C, Hungary
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K. Benedek
K. Benedek
3
Lithosphere Fluid Research Laboratory, Department of Petrology and Geochemistry, Eötvös University, Budapest, H-1117, Pázmány Péter sétány 1/C, Hungary
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Z. Zajacz
Z. Zajacz
3
Lithosphere Fluid Research Laboratory, Department of Petrology and Geochemistry, Eötvös University, Budapest, H-1117, Pázmány Péter sétány 1/C, Hungary
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Published:
January 01, 2007

A review of Paleogene–early Miocene igneous rocks of the Alpine-Carpathian-Pannonian-Dinaric region is presented in this paper. We attempt to reveal the geo-dynamic link between Paleogene–early Miocene igneous rocks of the Mid-Hungarian zone and those of the Alps and Dinarides. Our summary suggests that Paleogene–early Miocene igneous rocks of all these areas were formed along a single, subduction-related magmatic arc. The study also highlights orthopyroxene-rich websterite mantle xenoliths from west Hungary and east Serbia that were formed in the vicinity of a subducted slab. We discuss the location and polarity of all potential subduction zones of the area that may account for the igneous rocks and orthopyroxene-rich mantle rocks. However, results of seismic tomography on subducted slabs beneath the studied area combined with geological data demonstrate that igneous rocks and mantle rocks cannot be explained by the same subduction process. We propose that the Paleogene–early Miocene arc was mainly generated by the Budva-Pindos subduction zone, subordinately by Penninic subduction, whereas mantle rocks were possibly formed in the vicinity of the older Vardar subduction zone. Continental blocks possibly moved together with their mantle lithosphere. The present diverging shape of the proposed arc has been achieved by considerable shear and rotations of those lithospheric blocks.

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Contents

GSA Special Papers

Cenozoic Volcanism in the Mediterranean Area

Luigi Beccaluva
Luigi Beccaluva
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Gianluca Bianchini
Gianluca Bianchini
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Marjorie Wilson
Marjorie Wilson
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Geological Society of America
Volume
418
ISBN print:
9780813724188
Publication date:
January 01, 2007

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