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Palaeomagnetic results from the fold and thrust belt of the Western Carpathians: an overview

By
Emő Márton
Emő Márton
Geological and Geophysical Institute of Hungary, Palaeomagnetic Laboratory, Columbus 17-23, H-1145 Budapest, Hungary
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Jacek Grabowski
Jacek Grabowski
Polish Geological Institute – National Research Institute, Palaeomagnetic Laboratory, Rakowiecka 4, 00-975 Warsaw, Poland
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Antek K. Tokarski
Antek K. Tokarski
Institute of Geological Sciences, Polish Academy of Sciences, Research Centre in Kraków, Senacka 1, 31-002 Kraków, Poland
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Igor Túnyi
Igor Túnyi
Slovak Academy of Sciences, Geophysical Institute, Palaeomagnetic Laboratory, Dúbravská cesta 9, 845 28 Bratislava, Slovakia
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Published:
January 01, 2016

Abstract

The Western Carpathians are separated into an Outer and Inner Carpathians (both comprising several nappe systems) by the extremely narrow and highly deformed Pieniny Klippen Belt. The main phase of deformation and thrusting took place during the Late Cretaceous in the Inner Carpathians, at the end of Cretaceous–Paleocene in the Pieniny Klippen Belt and in the Miocene in the Outer Carpathians. In this paper a large amount of palaeomagnetic results of different quality available from several nappe stacks and from overstep sequences were reviewed and interpreted in terms of tectonics. The data suggest that all three main units participated in two phases of anticlockwise rotation starting at 18.5 Ma, that is, the Outer Carpathian nappes in front of the already consolidated Alpine–Carpathian–Pannonian block became accreted to the block. Late Cretaceous nappe transport, Neogene uplift of ‘core mountains’ and possibly oroclinal bending of pre-Oligocene age can account for important differences in pre-Cenozoic palaeomagnetic declinations. Most of them exhibit less or no anticlockwise rotation suggested by the overstep sequences, implying pre-Cenozoic clockwise rotations of variable angles.

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Geological Society, London, Special Publications

Palaeomagnetism in Fold and Thrust Belts: New Perspectives

E. L. Pueyo
E. L. Pueyo
IGME, Spain
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F. Cifelli
F. Cifelli
Università degli Studi Roma TRE, Italy
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A. J. Sussman
A. J. Sussman
Los Alamos National Laboratory, USA
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B. Oliva-Urcia
B. Oliva-Urcia
Universidad Autónoma de Madrid, Spain
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Geological Society of London
Volume
425
ISBN electronic:
9781862399570
Publication date:
January 01, 2016

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