A newly recognized Mnin restraining stepover is identified in the Permo-Mesozoic cover of the wes... more A newly recognized Mnin restraining stepover is identified in the Permo-Mesozoic cover of the western part of the Late Palaeozoic Holy Cross Mountains Fold Belt (Poland), within a fault pattern consisting of dextral strike-slip faults. The formation of a large contractional structure at the Late Cretaceous – Cenozoic transition displays the significant role of strike-slip faulting along the western border of the Teisseyre-Tornquist Zone, in the foreland of the Polish part of the Carpathian Orogen. Theoretical relationships between the maximum fault offsets/ mean step length, as well as between the maximum fault offsets/mean step width allowed the estimation of the values of possible offsets along the Snochowice and Mieczyn faults forming the Mnin stepover. The estimated values suggest displacements of as much as several tens of kilometres. The observed offset along the Tokarnia Fault and theoretical calculations suggest that the strike-slip faults west of the Late Palaeozoic Holy Cr...
Celem tej publikacji jest wskazanie oczekiwanych przez Prezesa Państwowej Agencji Atomistyki rozw... more Celem tej publikacji jest wskazanie oczekiwanych przez Prezesa Państwowej Agencji Atomistyki rozwiązań, które są konieczne do dokładnego rozpoznania stabilności tektonicznej podłoża, aktywności występujących w nim uskoków i związanych z tym zagrożeń w obszarze rozważanym pod kątem lokalizacji obiektu jądrowego, uwzględniając wpływ działalności człowieka. Opisany w zaleceniach zakres prac obejmuje: opis budowy geologicznej, charakterystykę geodynamiczną i prognozę aktywności tektonicznej. Przytoczone są źródła pozyskania danych wejściowych, sposób weryfikacji danych oraz interpretacji i przedstawienia wyników. Przewidziano etapowość dokonywania oceny od skali ogólnej – makroregionu, przez region lokalizacji, do najbardziej szczegółowego – obszaru lokalizacji. Prace prowadzone według niniejszych zaleceń mają doprowadzić do odpowiedzi, czy na danym obszarze, ze względu na budowę geologiczną, można posadowić obiekt jądrowy. Kolejnym zakresem wykorzystania przeprowadzonej oceny stabilnoś...
Based on the analysis of detailed geological maps, air photos, radar images and tectonic mesostru... more Based on the analysis of detailed geological maps, air photos, radar images and tectonic mesostructures the geometry and mechanism of formation of the Gnieêdziska-Brzeziny fault have been determined. The fault represents a typical example of a dextral strike-slip fault occurring in the SW margin of the Holy Cross Mountains. The trace of the fault is curvilinear-sinusoidal, which produced restraining and releasing bends as well as restraining stepovers.
The joint network in the Silesian Nappe is composed of a shear system (diagonal sets - SR, SL) - ... more The joint network in the Silesian Nappe is composed of a shear system (diagonal sets - SR, SL) - striking in the present position at high angles to map-scale fold axes, a single extension set T - striking sub-perpendicular to these axes, fold-parallel joints L and L' striking parallel or at small angles to map-scale fold axes. For palaeostress reconstructions penetrative SR, SL and T joint sets were analysed from 197 outcrops. In the palaeostress analysis the angular difference between the σHmax directions calculated from shear (SR, SL) and extension T joints is notable. The angular difference between these σHmax directions suggests that it is a result of a slight tectonic bending of the investigated Silesian Nappe arc, which took place between the nappe thrusting phase and the proceeding uplift phase of this part of the Outer Carpathian arc.
The structure of the Magura Nappe, within the zone of maximal bending of the Western Outer Carpat... more The structure of the Magura Nappe, within the zone of maximal bending of the Western Outer Carpathians, is described; investigations were concentrated mainly in the Beskid Wyspowy Subunit. A zone, bounded to the north and south by duplexes, comprises large characteristic synclines (Śnieenica, Lubogoszcz, Szczebel, Klimas, Łopień Ćwilin, Luboń Wielki). These appear on maps as isolated "island mountains", in the Beskid Wyspowy Subunit. These synclines contrast strongly with the belt-like distribution of regional folds to the west and east of the area. The synclinal massifs developed gradually. Fold belts several hundred metres long developed in the first phase of overthrusting of the Magura Nappe, with horizontal N-S compression dominant. Thrusts separating the individual subunits developed when the face of the overthrusting Magura Nappe stopped and the stress continued to push its southern parts forwards. The next phase, with continuing horizontal N-S stress included the de...
The Holy Cross Mountains Fold Belt, the Odrzywół-Ćmielów Graben, the Radom–Kraśnik Horst and the ... more The Holy Cross Mountains Fold Belt, the Odrzywół-Ćmielów Graben, the Radom–Kraśnik Horst and the Mazovia–Lublin Graben are located in the contact zone between the Paleozoic Platform and the East European Craton, eastwards of the Variscan foreland basin. The Holy Cross Mountains Fold Belt consists of the Kielce and the Łysogóry Fold Zones. The boundary between the Kielce and £ysogóry Fold Zones is formed by the Holy Cross Fault. Southwestern border of the Kielce Fold Zone is probably consistent with the extent of the folds in the Małopolska Block. The £ysogóry Fold Zone is probably bordered from northeast by the Skrzynno Fault, which is also a boundary of the Radom–Kraśenik Horst from the southwest. The Radom–Kraśnik and the Mazovia–Lublin Graben are separated by the Kazimierz–Ursynów Fault. Northeastern border of the graben is the Kock Fault.
The study of the Earth’s surface using DEM-generated products combined with geological maps or sa... more The study of the Earth’s surface using DEM-generated products combined with geological maps or satellite and aerial photographs provides information that is very useful for structural analysis. Applications of shaded-relief images, slope, openness, and aspect maps, 3D terrain views, profiling, contouring and semiautomatic intersections to selected parts of the Holy Cross Mountains and the Bieszczady Mountains are shown. The analysis led to the discovery of transverse faults in both fold and thrust belts, determination of the components of movement along these faults and the courses of the Łysogóry fault zone and the Dukla thrust fault. The application of these methods also enabled the display of changes in shape profiles of map-scale folds such as the Niewachlów anticline and the Baligród syncline.
ABSTRACT The Sanandaj-Sirjan Zone (SSZ) is one of the main basement tectonic blocks located close... more ABSTRACT The Sanandaj-Sirjan Zone (SSZ) is one of the main basement tectonic blocks located close to the northeastern margin of the Zagros Orogenic Belt. New observations in the central part of the zone indicate that the fault pattern is dominated by NW-trending longitudinal faults. The components of movement on the fault planes are interpreted as dextral oblique thrusting and dextral strike-slip. The identified structures along the faults were associated with the strike-slip faults (e.g., Hasan-Robat and Najafabad dextral restraining stepovers) and rotated tectonic blocks (arranged in a ‘domino’ configuration) near to the Foladshahr and Kolah-Ghazi mountains. Along the longitudinal faults, the dextral offsets of the rock units, streams, alluvial deposits and rivers were measured. The dextral offset values range from 2.4 to 2.7 km, while the estimated offsets based on the geomorphological features are between 50 and 61 m for streams, up to approximately w50 m for alluvial deposits and up to 2.2 km for rivers. The dextral strike-slip component on the fault planes occurs along the northern and southern margins of the SSZ, as well as directly within the zone, west and east of the study area. The evidence for strike-slip faulting in the internal part of the zone suggests that the central part of the SSZ probably was horizontally sheared in a manner consistent with a simple shear ‘card-deck model’.
A newly recognized Mnin restraining stepover is identified in the Permo-Mesozoic cover of the wes... more A newly recognized Mnin restraining stepover is identified in the Permo-Mesozoic cover of the western part of the Late Palaeozoic Holy Cross Mountains Fold Belt (Poland), within a fault pattern consisting of dextral strike-slip faults. The formation of a large contractional structure at the Late Cretaceous – Cenozoic transition displays the significant role of strike-slip faulting along the western border of the Teisseyre-Tornquist Zone, in the foreland of the Polish part of the Carpathian Orogen. Theoretical relationships between the maximum fault offsets/ mean step length, as well as between the maximum fault offsets/mean step width allowed the estimation of the values of possible offsets along the Snochowice and Mieczyn faults forming the Mnin stepover. The estimated values suggest displacements of as much as several tens of kilometres. The observed offset along the Tokarnia Fault and theoretical calculations suggest that the strike-slip faults west of the Late Palaeozoic Holy Cr...
Celem tej publikacji jest wskazanie oczekiwanych przez Prezesa Państwowej Agencji Atomistyki rozw... more Celem tej publikacji jest wskazanie oczekiwanych przez Prezesa Państwowej Agencji Atomistyki rozwiązań, które są konieczne do dokładnego rozpoznania stabilności tektonicznej podłoża, aktywności występujących w nim uskoków i związanych z tym zagrożeń w obszarze rozważanym pod kątem lokalizacji obiektu jądrowego, uwzględniając wpływ działalności człowieka. Opisany w zaleceniach zakres prac obejmuje: opis budowy geologicznej, charakterystykę geodynamiczną i prognozę aktywności tektonicznej. Przytoczone są źródła pozyskania danych wejściowych, sposób weryfikacji danych oraz interpretacji i przedstawienia wyników. Przewidziano etapowość dokonywania oceny od skali ogólnej – makroregionu, przez region lokalizacji, do najbardziej szczegółowego – obszaru lokalizacji. Prace prowadzone według niniejszych zaleceń mają doprowadzić do odpowiedzi, czy na danym obszarze, ze względu na budowę geologiczną, można posadowić obiekt jądrowy. Kolejnym zakresem wykorzystania przeprowadzonej oceny stabilnoś...
Based on the analysis of detailed geological maps, air photos, radar images and tectonic mesostru... more Based on the analysis of detailed geological maps, air photos, radar images and tectonic mesostructures the geometry and mechanism of formation of the Gnieêdziska-Brzeziny fault have been determined. The fault represents a typical example of a dextral strike-slip fault occurring in the SW margin of the Holy Cross Mountains. The trace of the fault is curvilinear-sinusoidal, which produced restraining and releasing bends as well as restraining stepovers.
The joint network in the Silesian Nappe is composed of a shear system (diagonal sets - SR, SL) - ... more The joint network in the Silesian Nappe is composed of a shear system (diagonal sets - SR, SL) - striking in the present position at high angles to map-scale fold axes, a single extension set T - striking sub-perpendicular to these axes, fold-parallel joints L and L' striking parallel or at small angles to map-scale fold axes. For palaeostress reconstructions penetrative SR, SL and T joint sets were analysed from 197 outcrops. In the palaeostress analysis the angular difference between the σHmax directions calculated from shear (SR, SL) and extension T joints is notable. The angular difference between these σHmax directions suggests that it is a result of a slight tectonic bending of the investigated Silesian Nappe arc, which took place between the nappe thrusting phase and the proceeding uplift phase of this part of the Outer Carpathian arc.
The structure of the Magura Nappe, within the zone of maximal bending of the Western Outer Carpat... more The structure of the Magura Nappe, within the zone of maximal bending of the Western Outer Carpathians, is described; investigations were concentrated mainly in the Beskid Wyspowy Subunit. A zone, bounded to the north and south by duplexes, comprises large characteristic synclines (Śnieenica, Lubogoszcz, Szczebel, Klimas, Łopień Ćwilin, Luboń Wielki). These appear on maps as isolated "island mountains", in the Beskid Wyspowy Subunit. These synclines contrast strongly with the belt-like distribution of regional folds to the west and east of the area. The synclinal massifs developed gradually. Fold belts several hundred metres long developed in the first phase of overthrusting of the Magura Nappe, with horizontal N-S compression dominant. Thrusts separating the individual subunits developed when the face of the overthrusting Magura Nappe stopped and the stress continued to push its southern parts forwards. The next phase, with continuing horizontal N-S stress included the de...
The Holy Cross Mountains Fold Belt, the Odrzywół-Ćmielów Graben, the Radom–Kraśnik Horst and the ... more The Holy Cross Mountains Fold Belt, the Odrzywół-Ćmielów Graben, the Radom–Kraśnik Horst and the Mazovia–Lublin Graben are located in the contact zone between the Paleozoic Platform and the East European Craton, eastwards of the Variscan foreland basin. The Holy Cross Mountains Fold Belt consists of the Kielce and the Łysogóry Fold Zones. The boundary between the Kielce and £ysogóry Fold Zones is formed by the Holy Cross Fault. Southwestern border of the Kielce Fold Zone is probably consistent with the extent of the folds in the Małopolska Block. The £ysogóry Fold Zone is probably bordered from northeast by the Skrzynno Fault, which is also a boundary of the Radom–Kraśenik Horst from the southwest. The Radom–Kraśnik and the Mazovia–Lublin Graben are separated by the Kazimierz–Ursynów Fault. Northeastern border of the graben is the Kock Fault.
The study of the Earth’s surface using DEM-generated products combined with geological maps or sa... more The study of the Earth’s surface using DEM-generated products combined with geological maps or satellite and aerial photographs provides information that is very useful for structural analysis. Applications of shaded-relief images, slope, openness, and aspect maps, 3D terrain views, profiling, contouring and semiautomatic intersections to selected parts of the Holy Cross Mountains and the Bieszczady Mountains are shown. The analysis led to the discovery of transverse faults in both fold and thrust belts, determination of the components of movement along these faults and the courses of the Łysogóry fault zone and the Dukla thrust fault. The application of these methods also enabled the display of changes in shape profiles of map-scale folds such as the Niewachlów anticline and the Baligród syncline.
ABSTRACT The Sanandaj-Sirjan Zone (SSZ) is one of the main basement tectonic blocks located close... more ABSTRACT The Sanandaj-Sirjan Zone (SSZ) is one of the main basement tectonic blocks located close to the northeastern margin of the Zagros Orogenic Belt. New observations in the central part of the zone indicate that the fault pattern is dominated by NW-trending longitudinal faults. The components of movement on the fault planes are interpreted as dextral oblique thrusting and dextral strike-slip. The identified structures along the faults were associated with the strike-slip faults (e.g., Hasan-Robat and Najafabad dextral restraining stepovers) and rotated tectonic blocks (arranged in a ‘domino’ configuration) near to the Foladshahr and Kolah-Ghazi mountains. Along the longitudinal faults, the dextral offsets of the rock units, streams, alluvial deposits and rivers were measured. The dextral offset values range from 2.4 to 2.7 km, while the estimated offsets based on the geomorphological features are between 50 and 61 m for streams, up to approximately w50 m for alluvial deposits and up to 2.2 km for rivers. The dextral strike-slip component on the fault planes occurs along the northern and southern margins of the SSZ, as well as directly within the zone, west and east of the study area. The evidence for strike-slip faulting in the internal part of the zone suggests that the central part of the SSZ probably was horizontally sheared in a manner consistent with a simple shear ‘card-deck model’.
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