Abstract
The Mura-Zala basin was formed due to ENE-WSW trending crustal extension in the late early and middle Miocene (~19 - 11 Ma). Marine sedimentation occurred in several more or less confined depressions (half grabens), then in a unified basin. The rifting phase was probably connected to uplift and brittle-ductile deformation of metamorphic basement at the eastern part of the Pohorje and Kozjak hills. During the late Miocene thermal subsidence, deltaic to fluvial sediments were deposited. After sedimentation, the southernmost Haloze-Budafa sub-basin was inverted. Mapscale folds, reverse and strike-slip faults were originated by NNW-SSE compression during the latest Miocene(?)-Pliocene. After this folding, Karpatian sediments of the Haloze acquired magnetization. During the late(?)Pliocene to Quaternary(?), the whole Mura-Zala basin, including the folded Haloze, suffered ~30° counterclockwise rotation as a relatively rigid block. This rotation affected a wider area from Slovenia to western Hungary and northern Croatia.
Highlights
The present paper gives a short description of the results of the bilateral cooperation project between Slovenia and Hungary during the years 1999-2000
Strike-slip deformation was associated with important rotations, whose sense and angle are varying in different tectonic blocks (Márton & Jelen, 1997; Fodoretal . , 1998)
All the results can be summarised in the following evolutionary scheme for NE Slovenia and SW Hungary (Fig. 3)
Summary
The present paper gives a short description of the results of the bilateral cooperation project between Slovenia and Hungary during the years 1999-2000. The project was initiated by our joint work in Northern Slovenia and Hungary during the years 1992-1996, including an inter-governmental project in 1995-1996 This work demonstrated stratigraphical and paleogeographical similarities between the North Slovenian and North Hungarian-South Slovakian Paleogene basin segments, which represent dismembered parts of a formerly unique basin Their deformation started in early Miocene and resulted in important dextral strike-slip displacement, mainly along the faults of the PeriadriaticMid-Hungarian shear zone, like the DonatBalaton zones Strike-slip deformation was associated with important rotations, whose sense and angle are varying in different tectonic blocks Strike-slip deformation was associated with important rotations, whose sense and angle are varying in different tectonic blocks (Márton & Jelen , 1997; Fodoretal . , 1998)
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