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Wyświetlanie 1-15 z 177
Tytuł:
Sediment transport along the gullies in flysch badlands : an example from SW Slovenia
Autorzy:
Zorn, M.
Powiązania:
https://bibliotekanauki.pl/articles/295196.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
badlands
gullies
erosion processes
flysch
Istria
Slovenia
Opis:
Sediment transport along erosion gullies in flysch badlands under Sub-Mediterranean climate is presented. Presented are weekly measurements, compiled measurements by months, as well as correlations of sediment transport with selected weather data. Sediment transport was measured up to 19 kg m-2 and was largely dependent on special weather conditions.
Źródło:
Landform Analysis; 2011, 17; 229-235
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The geomorphological effectiveness of extreme meteorological phenomena on flysch slopes
Autorzy:
Gorczyca, E.
Powiązania:
https://bibliotekanauki.pl/articles/294721.pdf
Data publikacji:
2008
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
extreme events
heavy rainfall
landslies
flysch slopes
Beskid Wyspowy
Bieszczady Niskie
Opis:
Extreme events tend to cause large-scale slope system changes. During the last ten years, a series of extreme meteorological events caused considerable transformation of the slopes and valleys in various parts of the Carpathian Mountains. This paper presents the geomorphological effects of extreme rainfall and thaw events on the slopes of two catchments: the lososina catchment (Beskid Wyspowy) and the Hoczewka catchment with an area around the Solinskie Lake (Bieszczady Niskie). The bulk of the discussion concerns a study carried out in the Lososina catchment after three separate extreme events that were followed by a considerable transformation of the slopes due to landsliding. The studies carried out in the Biesr.cr.ady Range, where a single extreme event produced only spatially limited effects, were mainly used for comparison. '[he disparity between the responses of the two slope systems was a result of differences between the systems themselves, including their geology, geomorphology and landslide record, and of the difference in the scale of the extreme events.
Źródło:
Landform Analysis; 2008, 6; 15-27
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Three-Dimensional Analysis of a Landslide Process on a Slope in Carpathian Flysch
Autorzy:
Zabuski, Lesław
Powiązania:
https://bibliotekanauki.pl/articles/240990.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
Carpathian flysch
landslide
discontinuity
3D numerical calculations
displacement
Opis:
The paper presents a 3D (spatial) analysis of deformation processes in the landslide slope Bystrzyca in Szymbark near Gorlice (Low Beskid – Carpathians; N 49°37′ 09″, E 21°05′ 49″) carried out by the computer code FLAC3D based on the finite difference method. The numerical analysis was performed to determine the influence of the orientation of layers and discontinuities and of hydrogeological conditions on slope deformations and the failure mechanism during sliding processes. The massif is modeled as an elasto-plastic medium obeying the Coulomb-Mohr criterion. Two variants of hydrogeological conditions are analyzed, namely the “dry slope” (without water) and the “wet slope” (entirely saturated). The influence of the orientation of discontinuities (modeled as “ubiquitous”) on the landslide mechanism is investigated as well. Few orientations of discontinuities with respect to the dip direction of the slope surface are considered, namely consequent, insequent, and subsequent (two variants in each case). The results show a clear impact of the pattern of discontinuities and hydrogeological conditions on the deformational behavior of the landslide and the shape of the slip surface. The 3D approach and results of the numerical simulation of the landslide movement prove the necessity of 3D modeling in some cases.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2019, 66, 1-2; 27-45
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Petrologic studies of diagenetic history of coaly matter in the Podhale Flysch sediments, southern Poland
Autorzy:
Wagner, M.
Powiązania:
https://bibliotekanauki.pl/articles/973628.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
terrigenic organic matter
random reflectance of vitrininite
Podhale flysch
Polska
Opis:
Common occurrences of terrigenic organic matter (both disseminated and accumulated in layers) in sedimentary rocks were observed. The flysch sediments in the Podhale Trough and in other parts of the Carpathians are inadequately recognised from coal petrologic point of view. Studies were carried out in the eastern (2008) and western part (2009) of the Podhale Trough. Samples were collected from the exposures. Petrographic studies included microscopic observations of polished sections as well as mean random reflectance measurements of vitrinite (colotellinite) were done. In the Podhale Flysch, coalified organic matter is represented mostly by vitrinite and, in microscopic scale, mainly by collotellinite. The common occurrence of coaly matter is revealed. It is well–visible in sandstones and mudstones, usually as the bedding planes. The amounts of coaly matter in clay minerals and carbonates are small. Organic matter hosted in the Podhale Flysch strata represents diversified coalification ranks measured as random reflectance of vitrinite (colotellinite), which falls into the range from 0.49 to 1.00%. Such values are typical for low- to medium ranks of bituminous coal. Measurements of reflectance provided new data suitable for evaluation of thermal history of rocks in the Podhale Trough. The changes of vitrinite (colotellinite) mean reflectance of organic matter from the Podhale Flysch are relevant to the contents of crystalline illite – the recently applied geothermometer of diagenetic (katagenetic) transformations of clay minerals. If the thermal palaeogra- dient is known, random changes of reflectance of vitrinite can be used for estimations of both the maximum thickness of the Podhale Flysch during deposition and its later amount of erosion. It appears that estimation of ma- ximum thickness of the Podhale Flysch (i.e., depositional thickness after compaction) and the amount of erosion are almost identical with the estimations based upon the illitization of clay minerals.
Źródło:
Annales Societatis Geologorum Poloniae; 2011, 81, No 2; 173-183
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the origin of chloride waters in the Polish Flysch Carpathians
Autorzy:
Zuber, A.
Chowaniec, J.
Borowiec, M.
Powiązania:
https://bibliotekanauki.pl/articles/2062987.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
chloride waters
ultrafiltration
diagenetic waters
oil-field waters
catagenesis
flysch Carpathians
Opis:
Chloride waters in the Polish Flysch Carpathians are remnants of marine sedimentation water which was chemically and isotopically changed due to ultrafiltration and the release of dehydration water (diagenetic water) during the burial diagenesis of clay minerals. In the western part of the study area, the diagenetic end-member is characterized by δ18O and δ2H values of about +6.5 and –30.0‰, respectively, and Cl– content in the range of 3.8 and 13.8 g/dm3. In some fault areas, such waters migrate to the surface and mix with local meteoric waters as indicated by mixing lines in δ18O–δ2H and δ18O–Cl– graphs. In several wells of the eastern part, waters containing a significant proportion of marine water occur. However, in majority of deep wells, mixtures of diagenetic and meteoric waters of Quaternary and pre-Quaternary climates are present, as deduced from δ18O–Cl– linear relations. In most cases, they do not exhibit linear relations also expected in δ18O–δ2H graphs due to the shifts of δ2H to heavier isotopic values supposedly caused by involvement of water in the generation of hydrocarbons.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2010, 441 Hydrogeologia z. 10; 201--208
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The contribution of Stanisław Dżułyński to flysch sedimentology: A 'Western' perspective
Autorzy:
Kelling, G.
Walton, E. K.
Simpson, F.
Powiązania:
https://bibliotekanauki.pl/articles/191704.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
sedimentary structures
turbidites
Carpathian flysch
laboratory flume studies
knowledge transfer
Opis:
Abstract: In his ground-breaking research on the sedimentary structures of turbidites, Stanisław Dżułyński demonstrated and took to new levels of accomplishment the defining attributes of the Kraków School of flysch sedimentology established by Marian Książkiewicz at the Jagiellonian University. These attributes included a meticulous approach to fieldwork, the ability to recognize the scalar and vector relationships of diverse sedi- mentary features, a working knowledge of several languages, a capacity to describe systematically structures that had previously received scant attention in the world literature of geology, and innovation in the transfer of scientific knowledge. Dżułyński also added elements that were distinctively his own: a highly inventive approach to the replication of turbidite sedimentary structures in laboratory flumes, an openness to new ideas, boundless enthusiasm for his chosen field, and an exuberantly outgoing personality. In spite of worldwide recognition for his numerous and wide-ranging achievements in geology, he viewed himself first and foremost as one of the senior students of Marian Książkiewicz. In this role, Dżułyński utilised every opportunity to present with great insight and objectivity the work of the Kraków School, enthusiastically shared his extensive knowledge of sedimentology with experienced colleagues and new acquaintances alike and, in particular, gave generous encouragement to young researchers.
Źródło:
Annales Societatis Geologorum Poloniae; 2007, 77, No 2; 93-103
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The position and age of flysch deposits in the Crimean Mountains (Southern Ukraine)
Autorzy:
Oszczypko, N.
Ślączka, A.
Bubniak, I.
Olszewska, B.
Garecka, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060566.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Ukraine
Crimean Mts.
stratigraphy
micropalaeontology
flysch
Opis:
The Crimean Mountains (CM) are regarded as part of the Alpine-Himalaya orogenic belt related to the collision of the Eurasian and African plates. Our research in the CM has allowed confirming the existence of at least two flysch formations of different ages: the Taurida Flysch Formation (Upper Triassic/Lower–? Middle Jurassic) and the Sudak Formation (uppermost Jurassic/Lower Cretaceous) in the western and eastern sectors of the CM, respectively. After the Middle Jurassic volcanism, the freshwater claystones with coal-bearing intercalations, as well as local alluvial fan conglomerates were deposited. Then, following the Oxfordian/Kimmeridgian marine transgression, three separated Tithonian/Berriasian carbonate platforms developed: Baydarska, Chatyr-Dag and Demerji/Karabi. At the turn of the Late Jurassic, the deep-water Sudak Basin (eastern sector of the CM) began to develop in the eastern periphery of the Demerji/Karabi carbonate platform. This basin, dominated by turbiditic deposition, was probably connected with the Great Caucasus sedimentary system. Finally, distal flysch sedimentation in the Sudak Basin was followed by debris-flow deposits, with huge blocks of Upper Jurassic limestones. These blocks were derived from destruction of the Karabi carbonate platform. During the Berriasian/Valanginian, the eastern sector of the CM began to subside. As a result, both carbonate platforms (western CM) and the debris flow fans of the Sudak Basin (eastern CM) were overlain by marly shales and/or distal turbidites. This type of deposition lasted until the Aptian/Albian. In the post-Albian period, the Alushta-Salgir tectonic zone was transformed into a SE-dipping thrust fault with at least 10 km amplitude of overthrusting.
Źródło:
Geological Quarterly; 2017, 61, 4; 697--722
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical three-dimensional modelling of the landslide process in the Carpathian flysch
Autorzy:
Zabuski, L.
Powiązania:
https://bibliotekanauki.pl/articles/1182840.pdf
Data publikacji:
2007
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
metoda różnic skończonych
model numeryczny
osuwisko
flisz karpacki
finite difference method
numerical model
landslide
Carpathian flysch
Opis:
W artykule omówiono możliwości oraz przedstawiono wyniki symulacji numerycznej ruchu osuwiskowego, wykonanej na przestrzennym modelu zbocza. Fliszowy masyw skalny charakteryzuje się anizotropią i — co za tym idzie — jego zachowanie zależy od orientacji struktur geologicznych w relacji do morfologii powierzchni terenu. Model dwuwymiarowy często nie pozwala na uwzględnienie takich struktur. W takich sytuacjach jedynie zastosowanie modelowania przestrzennego (3D) umożliwia stosunkowo dobre odwzorowanie przestrzennych cech ośrodka. Przedstawiono przykład analizy przestrzennej procesu deformacji zbocza osuwiskowego Kawiory, wykazując zalety metody 3D. Symulację numeryczną procesu przeprowadzono przy użyciu programu FLAC3D (Itasca, 1997), opartym na metodzie różnic skończonych.
Źródło:
Polish Geological Institute Special Papers; 2005, 20; 114--118
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recognition of the flysch substrate using the electrical resistivity tomography (ERT) method to assess the effectiveness of the injection process
Autorzy:
Ćwiklik, Michał
Pasierb, Bernadetta
Porzucek, Slawomir
Powiązania:
https://bibliotekanauki.pl/articles/27310120.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
electrical resistivity tomography ERT
monitoring
Carpathian flysch
injection
Opis:
During the construction of a section of the S-7 Lubień – Rabka-Zdrój dual expressway, located in the area of the Carpathian flysch (Carpathian Flysch Belt, South Poland), damage to the embankment was observed, as well as cracks and depressions in the new pavement. An analysis of the geological and engineering conditions in the area of the road section under construction showed the existence of a complex tectonic structure of the flysch formations, a shallow groundwater table, and numerous landslides. In order to stabilize the road substrate, it was decided to carry out injections, and the locations of these injections were initially geotechnically tested. However, due to the high variability of the geological structure, the target method employed was electrical resistivity tomography (ERT), which performed the survey in two stages. In Stage I, the geoelectrical/geochemical structure of the near-surface zone was identified, and the probable causes of road damage were indicated. This stage was completed by performing the stabilization and sealing process of the ground with an injection mixture. In Stage II, studies were carried out to evaluate the effectiveness of the injection process. The ERT method effectively identified the shallow geological structure and, in particular, delineated the zone of strong fractures in the flysch and areas associated with faults. Using the electrical resistivity tomography method, it was also possible to determine the injection mixture’s approximate penetration depth and the loosening zone’s degree of filling.
Źródło:
Geology, Geophysics and Environment; 2023, 49, 2; 197--202
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structural control of the Mroczna Cave development on the slopes of Mt Kornuty (the Flysch Carpathians, Beskid Niski Mts)
Autorzy:
Zatorski, M.
Powiązania:
https://bibliotekanauki.pl/articles/295108.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
mass movements
flysch Carpathians
crevice-type cave
structural control
anisotropic rock massif
Opis:
The Mroczna Cave is one of the longest caves in the Beskid Niski Mts., located on the south-western slopes of Mt Kornuty, along the main scarp of the landslide. According to the geomechanical criterion, it is dilation cave, where extension has played a major role. Morphotectonic analysis indicates that the main gravitational movement was of a toppling nature but there were also rotation around the vertical axis as well as a backward rotation. The relatively large cave depth (15.5 m) and its shape (cross-section of its passages) indicate that it was formed along a new gravitational cutting surface of the rock massif, associated with joint sets.
Źródło:
Landform Analysis; 2014, 27; 55-65
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Landslide processes in a flysch massif - case study of the Kawiory landslide, Beskid Niski Mts. (Carpathians, Poland)
Autorzy:
Zabuski, L.
Wójcik, A.
Gil, E.
Mrozek, T.
Raczkowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/2059216.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Carpathian flysch
landslide
monitoring
numerical simulation
Opis:
Geological setting and precipitation triggers seem to be obvious parameters controlling landslides, but their relation to individual sliding processes has not been clear. We take on interdisciplinary approach (combining Earth science methods with an engineer ing-geotechnical approach) to examine sliding processes in the Kawiory landslide in the Polish Carpathians. Field parameters were obtained from inclinometer monitoring, meteorological records, piezometer data and geomechanical tests. Numerical simulation of the landslide development was performed, both for the reconstruction of the internal deformation phenomena on the slope and for approximate prediction of its future behaviour. An empirical formula describing the relationship between the depth of groundwater level (GWL) and precipitation is presented. The case study showed that for the ob served quasi-continuous creep, the depth and in particular the intensity of GWL fluctuations might be crucial.
Źródło:
Geological Quarterly; 2009, 53, 3; 317-332
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selective agglutination of tourmaline grains by foraminifera in deep-water flysch environment (Eocene Hieroglyphic beds, Silesian Nappe, Polish Outer Carpathians)
Autorzy:
Waśkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/2059729.pdf
Data publikacji:
2014
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
heavy minerals
tourmaline
agglutinated foraminifera
deep-marine flysch environment
Outer Carpathians
Opis:
Detrital fragments of automorphic tourmaline crystals are commonly incorporated in tests of simple agglutinated foraminifera that lived in the deep-marine Carpathian turbidite basin, in which deposition of the Hieroglyphic beds (Eocene) took place. Such grains were observed in the tests of 37 taxa representing 20 species. However tourmaline occurs in the Carpathian Flysch sediments as an accessory mineral, still it was selected by the foraminifera as the only heavy mineral to be incorporated in their tests. The proportion of tourmaline-bearing specimens in an assemblage usually amounts to a few percent, but may reach 29% in extreme cases. The particular preference for tourmaline segregation and incorporation in the test walls is shown by the following genera: Psammosiphonella, Reophax, Bathysiphon and Nothia.
Źródło:
Geological Quarterly; 2014, 58, 2; 337--352
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advantages and limitations of interpretations of external morphology of detrital zircon: a case study of the Ropianka and Menilite formations (Skole Nappe, Polish Flysch Carpathians)
Autorzy:
Salata, D.
Powiązania:
https://bibliotekanauki.pl/articles/191222.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
detrital zircon
morphology
flysch
Skole Nappe
Outer Carpathians
Opis:
The zircon populations from the Campanian–Maastrichtian part of the Ropianka (Upper Cretaceous– Palaeocene) and Menilite (Oligocene–lower Miocene) formations in the northern part of the Skole Nappe in Poland were examined to evaluate interpretations of the external morphology of detrital zircon in provenance research. The advantage of the zircon typology method, supplemented with elongation measurements, is that it may be applied successfully to comparisons of euhedral zircon populations from sedimentary deposits of different ages and unknown provenance. The zircon typology method, along with elongation measurements of zircons, contributes valuable data that supplement conventional heavy-mineral analyses. It also permits the recognition of potential source areas and rock types for further comparative research.
Źródło:
Annales Societatis Geologorum Poloniae; 2014, 84, 2; 153-165
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pore pressure profiling in Siercza landslide colluvium in the Carpathian flysch using a Cone Penetration Test (CPTU)
Autorzy:
Stanisz, Jacek
Pilecki, Zenon
Powiązania:
https://bibliotekanauki.pl/articles/2058632.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
cone penetration test
pore pressure
inclinometer displacement
landslide
colluvium
slip surface
Carpathian flysch
Opis:
This study identifies zones with significant changes in pore water pressure influenced by landslide processes. Measurements were taken in the near-surface strata of the Carpathian flysch, in colluvium of the Siercza landslide, near Kraków. Measurement of pore water pressure in flysch deposits is complicated due to the strongly heterogeneous properties of the medium and by variable water conditions, which are strongly influenced by rainfall intensity. Pore pressure profiling was performed in six series using a cone penetration test with a NOVA Acoustic cone. The tests were carried out in the colluvium to a depth of ~6.0 m under varying water conditions. The cone pore pressure results were compared to results of inclinometer measurements in the research area. Five zones with significant differences in pore pressure have been identified. Changes in both cone pore pressure and inclinometer displacement are evident at a depth range from 1.5 to 2.5 m. Two slip surfaces are likely present in this section. Such information can be used in engineering practice for more reliable assessment of slope stability in the Carpathian flysch.
Źródło:
Geological Quarterly; 2019, 63, 4; 839--848
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Construction of Pressure Tunnels
Autorzy:
Zabuski, Lesław
Powiązania:
https://bibliotekanauki.pl/articles/241148.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
pressure tunnel
Carpathian flysch
numerical analysis
FLAC code
Opis:
The paper focuses on two pressure tunnels in the design of “Katy-Myscowa” water reservoir. One of them serves as a discharge conduit, whereas the other plays an energetic role. Their depths range between 0 and 75 metres and their diameters equal 5 m. Tunnels are located in the rock mass of Carpathian flysch which is anisotropic and heterogeneous, composed of layers of sandstone and clay shales and intersected with interbedding fissures and numerous joints. The paper is divided in two parts. The first part focuses on methods of excavating and supporting, as well as injecting and sealing (i.e. waterproofing) the tunnel. In the second part, a numerical analysis using the FLAC2D code based on the finite difference method was carried for calculating displacements and internal forces in the preliminary support and in permanent lining. Results of the analysis allow for the assessment of conditions in the tunnel during its excavation and exploitation stages.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2019, 66, 3-4; 77-100
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
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