DC pole | Wartość | Język |
dc.contributor.author | Mazur, Stanisław | - |
dc.contributor.author | Aleksandrowski, Paweł | - |
dc.contributor.author | Gągała, Łukasz | - |
dc.contributor.author | Krzywiec, Piotr | - |
dc.contributor.author | Żaba, Jerzy | - |
dc.contributor.author | Gaidzik, Krzysztof | - |
dc.contributor.author | Sikora, Rafał | - |
dc.date.accessioned | 2020-04-23T11:09:29Z | - |
dc.date.available | 2020-04-23T11:09:29Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | "International Journal of Earth Sciences" (2020) | pl_PL |
dc.identifier.issn | 1437-3262 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/13625 | - |
dc.description.abstract | Geophysical and geological data from the eastern sector of the Central European Variscan belt are presented and reviewed
in the regional tectonic context. Matched filtering of isostatic gravity, guided by results of spectral analysis, along with other
derivatives of gravity and magnetic fields reveal a dominant WNW–ESE-trending pre-Permian structural grain in the external
zones of the Variscan belt in Poland. This trend is confirmed by regional distribution of dips in Carboniferous and Devonian
strata that were penetrated by boreholes beneath Permian-Mesozoic sediments. Based on these data, two alternative concepts
explaining the connection of the Variscan belt and its NE foreland, those of strike-slip tectonics versus oroclinal bending,
are discussed. The WNW–ESE structural trend in the Variscan foreland is parallel to a set of major strike-slip fault zones in
the area, including those of Upper Elbe, Intra-Sudetic, Odra, Dolsk and Kraków-Lubliniec. These faults are considered to
convey a significant dextral displacement between Laurussia and Gondwana. The revised position of the Variscan deformation
front shows a similar, uninterrupted, generally WNW–ESE trend, up to the SE border of Poland, which indicates an
initial continuation of the Variscan belt into the area of the present-day Western Carpathians. The geometry of the Variscan
deformation front along with the pattern of the Variscan structural grain are inconsistent with the idea of an oroclinal loop
affecting the external, non-metamorphic Variscan belt. However, the data presented do not entirely rule out an oroclinal
loop within the Variscan internides. The still possible options are (1) a semi-oroclinal model postulating ~ 90° bending of
the Variscan tectonostratigraphic zones into parallelism with the WNW–ESE strike-slip faults or (2) an orocline limited only
to the belt linking the Wolsztyn High and Moravo-Silesian non- to weakly-metamorphic fold-and-thrust belt. Regardless of
the kinematic model preferred, our data indicate that structural evolution of the Polish Variscides was concluded with the
end-Carboniferous NNE–SSW shortening that resulted in the present-day extent of the Variscan deformation front. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | Central Europe | pl_PL |
dc.subject | Carboniferous | pl_PL |
dc.subject | Variscan foreland | pl_PL |
dc.subject | Variscan deformation front | pl_PL |
dc.subject | Rhenohercynian | pl_PL |
dc.subject | Moravo- Silesian | pl_PL |
dc.subject | Sudetes | pl_PL |
dc.subject | Bohemian Massif | pl_PL |
dc.subject | Gravity and magnetic data | pl_PL |
dc.title | Late Palaeozoic strike-slip tectonics versus oroclinal bending at the SW outskirts of Baltica: case of the Variscan belt’s eastern end in Poland | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1007/s00531-019-01814-7 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
|