Magnetic fabric of granitic composite pluton of the Velká Fatra Mountains (Western Carpathians, Slovakia): A Variscan remnant within the Alpine edifice?

Gregorová, Dagmar; Hrouda, František; Kohút, Milan

doi:10.3166/ga.22.57-72

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…2, sites WR1, WR2, WR5, WR6, WR7 WR8, VF2, NT2, NT4), such lineations display an approximate NE-SW to E-W orientation, lie in the bedding plane, and are generally oblique to bedding strike. The orientation of the lineation is interpreted to be compatible with the regional bulk strain related to NW-directed emplacement of the Krížna nappe (Prokešová 1994;Kovač& Bendík 2002;Plašienka 2003;Pecěnǎ & Vojtko 2011;Prokešová et al 2012) and is also similar to the strain pattern revealed by AMS from the Great Fatra Mountains (Krížna nappe and autochthonous cover, Gregorová et al (2009)) and from the Tatra Mountains (basement, autochthonous cover and Krížna nappe, Hrouda & Kahan (1991), and the Krížna nappe, Grabowski (1996)). We interpret this lineation as tectonic in origin and related to Late Cretaceous deformation during which the studied rocks were affected by layer-parallel shortening associated with regional shortening and overthrusting of the Krížna and Chočnappes.…”

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confidence: 59%

Paleomagnetic and magnetic fabric data from Lower Triassic redbeds of the Central Western Carpathians: new constraints on the paleogeographic and tectonic evolution of the Carpathian region

Szaniawski

Ludwiniak

Mazzoli

et al. 2020

JGS

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In the Central Western Carpathians (CWC), most published paleomagnetic results from Permo-Mesozoic rocks document extensive remagnetizations and come from thin-skinned thrust units that have undergone multistage deformation. We present results from lower Triassic redbeds from the autochthonous cover overlying the basement that carry a primary magnetization. Petromagnetic results indicate that the dominant ferromagnetic carrier is hematite, while magnetic susceptibility and its anisotropy are controlled by both ferromagnetic and paramagnetic minerals. Magnetic fabrics document weak deformation related to Late Cretaceous shortening. The directions of the high unblocking temperature remanence components pass both reversal and fold tests, attesting to their primary nature. Paleomagnetic inclinations are flatter than expected from reference datasets, suggesting small latitudinal separation between the CWC and stable Europe. Paleomagnetic declinations are mostly clustered within individual mountain massifs, implying their tectonic coherence. They show only minor differences between the massifs, indicating a lack of significant vertical-axis tectonic rotations within the studied central parts of the CWC. The paleomagnetic declinations are therefore representative of the whole of the CWC in terms of regional paleogeographic interpretations, and imply moderate counterclockwise rotations (c. 26°) of the region with respect to stable Europe since the Early Triassic.

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