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    Wyświetlanie 1-15 z 15
    Tytuł:
    The Inverse Reaction Cross Sections for Some Charged Particles Using the Optical Model Parameters
    Autorzy:
    Ahmed, Rasha S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1193016.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Optical reaction cross-sections
    charged particles
    neutrons
    pre-equilibrium models
    Opis:
    p-nucleus, (_1^2)H-nucleus, (_1^3)H-nucleus, and (_2^4)He-nucleus inverse reaction cross sections have been determined using the optical model potentials in a wide range of target nuclei started from A=1 to A=232 using several incident particle energies ( E = 2, 8, 10, 20, and 40 MeV). In this work, a large number of optical model available parameters were used to calculate the inverse reaction cross section and compared to investigate the effect of the mass number and incident particle energy on the inverse reaction cross section. All the calculations were performed using MATHLAB programming language.
    Źródło:
    World Scientific News; 2016, 28; 72-83
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    3D scanning of the painting for the purpose of performing a measurement of deformations of the wooden panel painting support
    Autorzy:
    Lewandowski, M.
    Kubik, H.
    Gębarski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1396458.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    3D scanning
    point clouds
    cross-sections
    deviation color map
    Opis:
    The person ordering the research was Mr. Andrzej Cichy of the Faculty of Wood Technology at the Warsaw University of Life Sciences. The painting was made available from his private collection. The aim of the research conducted by SMARTTECH was to study the impact of changes in humidity on the deformation of a wooden panel painting support.
    Źródło:
    Advanced Technologies in Mechanics; 2016, 3, no. 2 (7); 26-33
    2392-0327
    Pojawia się w:
    Advanced Technologies in Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    $K_{β}/K_{α}$ X-Ray Intensity Ratios for Cr, Mn, Fe, and Co Excited by 8.735 keV Energy
    Autorzy:
    Yılmaz, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398200.pdf
    Data publikacji:
    2018-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    K X-ray intensity ratios
    X-ray fluorescence
    cross-sections
    Opis:
    In this study, the K shell intensity ratios $K_{β}/K_{α}$ have been experimentally determined for the elements Cr, Mn, Fe, and Co. Measurements have been carried out at 8.735 keV excitation energy by using secondary excitation method. K X-rays emitted by samples have been counted by a Si (Li) detector with 160 eV resolutions at 5.9 keV. The measured values were compared with the calculated theoretical values. The obtained values are in good agreement with the calculated values.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 5; 1227-1230
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Crustal-scale complexity of the contact zone between the Palaeozoic Platform and the East European Craton in the NWPoland
    Autorzy:
    Królikowski, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058936.pdf
    Data publikacji:
    2006
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    edge of the craton
    seismic cross-sections
    magnetic anomalies
    geothermal field
    Opis:
    Hypotheses on the trace and nature of the SW margin of the East European Craton (EEC) are reviewed. As new geophysical data was acquired, the location of the EEC margin was repeatedly revised.Magnetic anomalies associated with the SWpart of the EEC and their relationship with the contact zone between the EEC and the Palaeozoic Platform are described. Based on an analysis of magnetic anomalies, seismic cross-sections, the LT-7, P1, P2 and P4 wide-angle reflection and refraction profiles, and the results of recent geothermal modeling, the geometry of the contact zone between the EEC and the Palaeozoic Platform in NW Poland has been redefined. Three important boundaries are distinguished, namely the Teisseyre-Tornquist Line marking the SW limit of the EEC at upper and middle crustal levels, the SW margin of the West Pomeranian Magnetic Anomaly that delimits the NE extension of the reversely magnetised lower crust of the Palaeozoic Platform, and the SWtermination of the high velocity lower crust of the EEC. These boundaries and their characteristics reflect the tectonic complexity of the SW margin of the EEC in its Polish sector.
    Źródło:
    Geological Quarterly; 2006, 50, 1; 33-42
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New method of pure 111In production by proton-induced nuclear reactions with enriched 112 Sn
    Autorzy:
    Betak, E.
    Rurarz, E.
    Mikołajewski, S.
    Wojtkowska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/148256.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    cross sections
    Sn isotopes
    proton-induced reactions
    111In production
    diagnostic radioisotope
    Opis:
    We aimed at finding out a simple and reliable way of 111In production with the highest radionuclide purity from its grand parent 111Sb and parent 111Sn nuclei, produced by the 112Sn(p,2n)111Sb and 112Sn(p,pn)111Sn reactions, respectively. The target was a metallic 112Sn sample enriched to 84%. We have measured activation cross sections for seven reactions on an enriched 112Sn sample induced by 23.6 š 0.8 MeV energy protons. Gamma-ray spectroscopy with high-purity germanium detectors has been used. We also identified the activities of 55Co (T1/2 = 17.5 h) and 60Cu (T1/2 = 23.7 min) in proton beam monitoring Ni foils, induced in the natNi(p,X)55Co and natNi(p,X)60Cu reactions at 22.8 MeV proton energy. The cross sections determined for these reactions are: s[natNi(p,X)55Co] = 36.6 š 4 mb and s[natNi(p,X)60Cu] = 64.4 š 7 mb. The measured cross sections of reactions on tin isotopes are: sigma[112Sn(p,n)112Sb] = 4 š 0.8 mb; sigma[112Sn(p,2n)111Sb] = 182 š 26 mb; sigma[112Sn(p,pn)111Sn] = 307 š 35 mb; sigma[114Sn(p,2n)113Sb] = 442 š 52 mb; s[117Sn(p,n)117Sb] = 15 š 3 mb; sigma[117Sn(p,p’gamma)117mSn] = 0.37 š 0.06 mb; s[115Sn(p,2p)114m2In] = 0.01 š 0.002 mb. Our measurements indicated the expected yield of the 111In production to be 46 MBq/mAh (1.2 mCi/mi Ah). The contamination of 111In by the undesired nuclide 114m2In was determined and belongs to the smallest ones found in the literature. The measured cross sections were compared with theoretical calculations by two top-level nuclear reaction codes EMPIRE and TALYS.
    Źródło:
    Nukleonika; 2007, 52, 1; 17-27
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy concepts involved in MOS characterization
    Autorzy:
    Engström, O.
    Gutt, T.
    Przewłocki, H. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/308781.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    C-V technique
    capture cross sections
    interface states
    Meyer-Neldel rule
    MOS
    thermally stimulated current
    Opis:
    Starting from a quantum statistical reasoning, it is demonstrated that entropy properties of silicon/silicon dioxide interface electron traps may have a strong influence on measured distributions of interface states, depending on measurement method used. For methods, where the Fermi-level is used as a probe to define an energy position, the scale is based on free energy. On the other hand, methods based on thermal activation of electrons give the distribution on an enthalpy scale. It is shown that measured interface state distributions are influenced by the distribution of entropy, and that common features of measured energy distributions may be influenced by entropy variations. These results are used to interpret experimental data on the energy distribution of electron capture cross sections with an exponential increase followed by a more or less constant value as the energy distance of the traps from the conduction band edge increases. Such a relation is shown to be consistent with a situation where the emission and capture processes of electrons obey the Meyer-Neldel rule.
    Źródło:
    Journal of Telecommunications and Information Technology; 2007, 2; 86-91
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ położenia styku na wysokości żelbetowych elementów zespolonych o przekroju teowym na stan graniczny zarysowania styku
    Influence of the interface location at the height of composite reinforced concrete elements on the interface crack limit state
    Autorzy:
    Jabłoński, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/390254.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
    Tematy:
    żelbetowe belki zespolone
    przekrój teowy
    zarysowanie styku
    concrete composite beams
    T-shape cross-sections
    interface
    delamination
    Opis:
    W pracy zrelacjonowano badania żelbetowych belek zespolonych o przekroju teowym z różnie usytuowanym stykiem. Analizowano obraz zarysowania belek oraz wartości sił, przy których nastąpiło zarysowanie styku. Wykonano również obliczeniową analizę wpływu położenia styku oraz różnicy modułów sprężystości łączonych betonów na wartość naprężeń w styku.
    In this paper the results of the research of T-shape cross-section beams with differently located interface are presented. The cracks pattern and the value of the force causing the interface cracking are analysed. Moreover, the influence of the interface location and the difference of the elastic moduli of joint materials on the stress level in the interface were also analysed.
    Źródło:
    Budownictwo i Architektura; 2014, 13, 3; 95-102
    1899-0665
    Pojawia się w:
    Budownictwo i Architektura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strength of eccentrically tensioned reinforced concrete structures with small eccentricities by normal sections
    Autorzy:
    Dmytrenko, Yevhen
    Yakovenko, Ihor
    Fesenko, Oleg
    Powiązania:
    https://bibliotekanauki.pl/articles/35540855.pdf
    Data publikacji:
    2021
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    reinforced concrete structures
    deformation model
    two-line stress-strain diagram
    non-eccentric tension
    small eccentricities
    normal cross sections
    Opis:
    It is implemented the method of normal rectangular sections slab (shell) reinforced concrete elements strength calculating with flat eccentric tensile strength using the deformation m ethod. The results of the calculation are analyzed for the case of eccentric tension with small eccentricities with varying next parameters: the height of the cross section and the reinforcement coefficient. It is investigated the character of diagrams condition change of section “N - εc(1)” at gradual change of the stress-strain state from eccentric to the central tension. It is revealed that when the eccentricity of external forces decreases, the compressed zone of concrete decreases until its complete disappearance, and at rather small values of eccentricities of force application the balance between external and internal forces cannot be found by the method of current norms. An equilibrium is found between internal and external forces only at a two-digit diagram of the distribution of relative longitudinal deformations (in the case of a compressed zone). Variants of the given problem decision without considerable loss of calculations accuracy are offered, the most expedient of which is transition to algorithm of calculation by a method of limiting efforts. It was accepted as the basic in the previous building norms. The results of numerical calculations performed in the software complex “Lira-CAD” and the corresponding mathematical modeling confirmed the rationality and allowable accuracy of further calculations by this method.
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2021, 30, 3; 424-438
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On representative functions method for clustering of 2D contours with application to pottery fragments typology
    Autorzy:
    Kaliszewska, A.
    Syga, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/205512.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    shape representation
    2D contours
    cross-sections
    rotationally symmetric objects
    representative functions
    clustering
    dynamic time warping (DTW) distance
    Opis:
    We investigate clustering of 2D contours which represent cross-sections of rotationally symmetric objects. We propose modifications of the existing representations of digitized 2D contours and similarity measures. In particular, we represent each of the investigated objects as a single number and two functions and we use the DTW distance to measure their similarity. We apply our method to clustering of pottery fragments.
    Źródło:
    Control and Cybernetics; 2018, 47, 1; 85-108
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania nośności belek żelbetowych wzmocnionych pod obciążeniem przez obetonowanie
    Investigation of the bearing capacity of reinforced concrete beams strengthened with reinforced concrete ring under load
    Autorzy:
    Blikharskyy, Z
    Dubizhanskyy, D
    Khmil, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/390083.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
    Tematy:
    belka żelbetowa
    przekroje normalne
    wzmocnienie
    obetonowanie
    reinforced concrete
    normal cross sections
    strengthening under load
    reinforced concrete ring
    bearing capacity
    Opis:
    Badano nośność żelbetowych belek zginanych wzmocnionych przez obetonowanie. Przebadano 16 belek zgrupowanych w 4 seriach. Ustalano stan naprężeniowo-odkształceniowy belek w zależności od poziomu obciążenia przy którym realizowano wzmocnienie, a także przyrost nośności wynikający z tego wzmocnienia. Zidentyfikowano trzy charakterystyczne etapy zmian tego stanu. Zaprezentowano wyniki badań nośności wzmocnionych belek i obliczono efektywność wzmocnienia. Ustalono także wpływ stopnia zbrojenia obetonowania na tę efektywność.
    Bearing capacity of normal cross section of bending concrete elements reinforced with reinforced concrete ring under load was investigated. Experimental researches of 4 sets of beams with the total number of 16 units were carried out. The results of changes of stress-strain state settings depending on the load level, additional reinforcement, influence of limit level load were analyzed. The three characteristic stages of stress-strain state of reinforced concrete beams strengthened with reinforced concrete ring were defined. Results of experimental investigations of bearing capacity of normal cross section of strengthened beams with reinforced concrete ring under load were presented. Enhancing effect was calculated. According to the results of researches of strengthened beams plots of strain of working armature depending on current bending moment were constructed.
    Źródło:
    Budownictwo i Architektura; 2014, 13, 3; 65-70
    1899-0665
    Pojawia się w:
    Budownictwo i Architektura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    JMATRIX - package for relativistic J-MATRIX calculations in elastic scattering of electrons from model potentials
    Autorzy:
    Syty, P.
    Sienkiewicz, J. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1940696.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska
    Tematy:
    J-matrix method
    relativistic
    electron elastic scattering
    phase shifts
    Dirac partial-waves analysis
    differential
    total
    momentum transfer
    spin polarization cross sections
    Opis:
    We present a software package JMATRIX, consisting of two computer codes written in FORTRAN 95 and parallelized with OpenMP, implementing the so-called J-matrix method, applied to elastic scattering of electrons on the radial potential, vanishing faster than the Coulomb potential. In the J-matrix method, the physical scattering problem is replaced by using a well-defined model which is solved analytically. The presented software implements both non-relativistic and relativistic versions of the method, and allows calculations of scattering phase shifts as well as cross sections, in cases when the scattering potential is given through an analytical formula. We performed test calculations for the scattering potential modeled as a truncated Coulomb potential. We show that the numerical phase shifts to converge as we increase the size of the basis used to truncate the scattering potential, and that the method is suitable for calculating the total differential momentum transfer and spin polarization cross sections, using the partial-wave analysis.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2017, 21, 1; 17-42
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Track planarity and verticality of the warehouse racks for the quality assessment of further operation
    Autorzy:
    Labant, Slavomír
    Bindzárová Gergel’ová, Marcela
    Rákay, Štefan
    Weiss, Erik
    Zuzik, Jozef
    Powiązania:
    https://bibliotekanauki.pl/articles/145334.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    regał magazynowy
    bezpieczeństwo regałów magazynowych
    profil podłużny
    longitudinal profiles and cross sections
    poles of racks
    regression analysis
    safety of warehouse racks
    Opis:
    The content of this paper is dedicated to the analysis of the flat planarity of forklift stacker’s track and cross sections of lanes between racks in a warehouse. These results will serve as a basis for a possible reconstruction of the track and racks and shall contribute to the overall reduction of costs related to an unexpected bad technical condition. The contribution aims to assess the geometric parameters of warehouse racks at the selected company operation in terms of their suitability for further use. The choice of the selected topic represents a relevant issue, which can be possibly encountered in daily practice related to the storage and transport processes of products. The measurements and processing of longitudinal profiles and cross-sections were made in the local coordinate and local vertical system. Points on the lower, middle and upper level of racks were measured for good and correct interpretation of results. Testing the measured positional change of poles is on the end of this paper. The immediate readiness of interest groups of subjects for adopting necessary actions to ensure the stability and safe operation of the whole network of lanes of the warehouse spaces is the expected contribution of the presented results.
    Źródło:
    Geodesy and Cartography; 2019, 68, 2; 305-319
    2080-6736
    2300-2581
    Pojawia się w:
    Geodesy and Cartography
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parametric modeling applied to turbine blade optimization for the requirements of natural vibrations analysis
    Metodyka budowy modelu parametrycznego na potrzeby analizy drgań własnych elementów lotniczego silnika turbinowego
    Autorzy:
    Kachel, S.
    Kozakiewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/212455.pdf
    Data publikacji:
    2011
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
    Tematy:
    projektowanie UAV
    budowa modelu parametrycznego silnika turbinowego
    analiza drgań elementów silnika turbinowego
    turbine jet engines
    turbine
    reverse engineering methods
    profile curves optimization
    cross-sections modeling
    Opis:
    In the article methodology for the construction of parametric model for natural vibration analysis of the turbine aircraft engine components was presented. The process of modeling in a systemic approach in application to turbine blade optimization was discussed. Peculiarities of the design of turbine aircraft engine and its aggregates were described. Algorithms of point selection out of the measurement data in order to create a pattern was formulated. In the paper a discuss is conducted on selection of the curves for parametric modeling including inputs to the process of surface mapping optimization based on reverse engineering technique. The process of geometry mapping begging from precise measurements , data identification, curve verification and ending with creation of a solid of modeled object is shown. This paper contains assumptions of algorithms of aircraft structure elements modeling developed and used by the authors.
    W artykule zaprezentowano metodykę budowy modelu parametrycznego na potrzeby analizy drgań własnych elementów lotniczego silnika turbinowego. Omówiono proces modelowania w ujęciu systemowym w zastosowaniu do procesu optymalizacji łopatki turbiny. Przedstawiono osobliwości projektowania lotniczego silnika turbinowego i jego zespołów. pracowano algorytmy wyboru punktów z danych pomiarowych do utworzenia wzorca. Przeprowadzono dyskusję doboru krzywych do parametrycznego modelowania z uwzględnieniem wejść do procesu optymalizacji odwzorowania powierzchni bazując na technice inżynierii odwrotnej. Przedstawiono proces odwzorowania geometrii od etapu wykonania precyzyjnych pomiarów, identyfikacji danych, weryfikacji krzywych, aż do utworzenia bryły modelowanego obiektu. W pracy zawarto założenia opracowanych przez autorów i zastosowanych algorytmów modelowania elementów struktur lotniczych.
    Źródło:
    Prace Instytutu Lotnictwa; 2011, 8 (217); 50-64
    0509-6669
    2300-5408
    Pojawia się w:
    Prace Instytutu Lotnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    O zarysowaniu mostowych konstrukcji żelbetowych
    About cracks of reinforced concrete bridge structures
    Autorzy:
    Oleszek, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/144589.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
    Tematy:
    przekroje żelbetowe
    przyczyny zarysowania
    wymiarowanie ze względu na rysy
    sztywność elementów żelbetowych
    cracks
    concrete cross-sections
    causes cracking
    due to the dimensioning cracks
    stiffness of reinforced concrete elements
    Opis:
    Zarysowanie obiektów mostowych z betonu zbrojonego jest naturalną cechą tych konstrukcji. Wpływa ono na ich trwałość. W artykule przedstawiono czynniki powodujące zarysowanie oraz normowe procedury wymiarowania przekrojów ze względu na rysy. Opisano podejście norm do dopuszczalnej rozwartości rys. Przedstawiono metodologię uwzględniania zmian sztywności przekrojów spowodowaną zarysowaniem. Wykonano obliczenia porównawcze kliku przekrojów konstrukcji mostowych. Przedyskutowano wyniki obliczeń.
    Cracks of reinforced concrete bridges is a natural feature of these structures. It affects their durability. The article presented the factors causing cracks and dimensioning procedures specified by standards sections due to the scratches. The approach to standards permissible tip opening cracks are described. The methodology to take into account changes in stiffness due to cross sections scratches are illustrated. Comparative calculations are performed several cross-sections of bridge structures are performed. The results of the calculations are discussed.
    Źródło:
    Drogownictwo; 2014, 5; 156-163
    0012-6357
    Pojawia się w:
    Drogownictwo
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Palaeozoic-Mesozoic development of the Skrzynno Fault (northeastern border of the Holy Cross Mts.)
    Autorzy:
    Kowalczewski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059895.pdf
    Data publikacji:
    2002
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Holy Cross Mountains
    Skrzynno Fault
    borehole sections
    thickness analysis
    subsidence
    Opis:
    The prominent regional Skrzynno Fault, running NW-SE, crosses the northeastern periphery of the Holy Cross Mts. On either side of this fault two deep boreholes were drilled 5 km apart (Ostałów 1 and Ostałów PIG 2). A comparison of the stratigraphical successions in these boreholes enabled a reconstruction of the fault's evolution. This is a normal fault with a downthrown northeastern wall. At the sub-Cenozoic surface close to the fault plane, the lower Middle Jurassic is in contact with lowermost Lower Jurassic. The base of the Jurassic is thrown by 810 m, and the base of the Permian by 1010 m. These values suggest that the Skrzynno Fault was a synsedimentary fault, active from the Permian until the Jurassic. On the upthrown side, the Permian is underlain by the Middle Devonian, but on the downthrown side, by the Lower Carboniferous. Estimating the thickness of deposits removed from the upthrown side shows that the pre-Permian fault throw could have amounted to about 1300 m. On the downthrown side thin Rotliegend deposits are preserved. A local saline basin was formed during deposition of the Zechstein PZ1 cycle. The southwestern fault wall was subsiding during sedimentation of the upper Zechstein and in the Early Triassic - the difference in thicknesses of the Buntsandstein is nearly 200 m. Another stage of fault activity and the lowering of its northeastern wall occurred during Keuper (upper part of the Triassic) sedimentation. These deposits are thicker by approximately 300 m here, as compared with the southwestern side. Later evolution of the fault cannot be precisely reconstructed due to erosion of post-Hettangian sediments of the upthrown side. General knowledge of the geology of the region indicates that the Skrzynno Fault was strongly active in particular around the Jurassic/Cretaceous boundary and during the Paleogene tectonic inversion.
    Źródło:
    Geological Quarterly; 2002, 46, 3; 281-292
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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