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Wyszukujesz frazę "Sudetes" wg kryterium: Temat


Tytuł:
Palaeomagnetic and petromagnetic study of uranium-bearing polymetallic-fluorite mineralization in the Orlík-Kladsko crystalline complex (near Kletno, Lower Silesia, Poland)
Autorzy:
Sobień, K.
Nawrocki, J.
Tematy:
Polska
palaeomagnetism
uranium
Sudetes
Pokaż więcej
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/2059083.pdf  Link otwiera się w nowym oknie
Opis:
Palaeomagnetic measurements of polymetallic-uranium ore in the Old Uranium Kletno Mine were carried out. Thermal and alternating field (AF) demagnetizations of the rocks studied (fluorite and quartz veins, cataclased gneisses, calcareous-silicate rocks with epidote/grossular) enabled isolation of two well-defined magnetization components. A normal polarity palaeomagnetic direction was preserved in magnetite and coarse hematite, whereas reversed polarity is linked with fine hematite grains. Both statistically well-defined components do not differ within limits of error. The calculated mean palaeomagnetic pole was compared with the European apparent polar wander path. This comparison points unambiguously, within limits of statistical error, for an Early Cretaceous to Paleogene age of characteristic components of magnetization. Consequently this age limit constrains the time of uranium-bearing polymetallic-fluorite mineralisation.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nietoperze zimujące w naturalnych jaskiniach polskiej części Sudetów
Bats hibernating in the natural caves in the Polish part of the Sudetes
Autorzy:
Furmankiewicz, Marek
Furmankiewicz, Joanna
Wydawca:
Muzeum Przyrodnicze w Jeleniej Górze
Cytata wydawnicza:
FURMANKIEWICZ J., FURMANKIEWICZ M., 2002, Bats hibernating in the natural caves in the Polish part of the Sudetes, Przyroda Sudetów Zachodnich, Suplement 2: 15-38
Opis:
In three winter seasons (1999/2000, 2000/2001, 2001/2002) 26 caves in the Polish part of the Sudetes were investigated and 13 bat species were found: Myotis myotis, M. bechsteinii, M. nattereri, M. emarginatus, M. mystacinus, M. brandtii, M. dasycneme, M. daubentonii, Eptesicus nilssonii, E. serotinus, Plecotus auritus, Barbastella barbastellus and Rhinolophus hipposideros. M. myotis and M. mystacinus/brandtii were the dominant species (27.3% and 24.4% of all identified bats, respectively). M. daubentonii (18.9%) and M. nattereri (10.7%) were relatively abundant. B. barbastellus and P. auritus represented 8.3% and 8.6% of all bats. The largest hibernacula were Nied wiedzia Cave near Kletno (with max. 251 individuals in 2002) and Szczelina Wojcieszowska Cave in Polom near Wojcieszów (max. 194 ind. in 2001). They seem to be the most important winter localities in the Polish part of the Sudetes for M. mystacinus/brandtii (max. 132 ind.), M. myotis (102 individuals), M. daubentonii (max. 59 ind.), P. auritus (max. 33 ind.) and M. emarginatus (max. 7 ind.). Single individuals of M. dasycneme were found in caves in Polom. In Na Scianie and Nad Ladkiem caves Rh. hipposideros were recorded for the first time in the winter of 2002. The caves are very important hibernating places for bats, but more winter localities in the Sudetes are located in old mines. The number of bats hibernating in the Polish part of the mountains is lower than in hibernacula in the Czech part, where there are several localities with nearly 300-1300 individuals and a greater number of rare species
Dostawca treści:
Repozytorium Centrum Otwartej Nauki
Artykuł
Tytuł:
How high - resolution DEM based on airborne LiDAR helped to reinterpret landforms : examples from the Sudetes, SW Poland
Autorzy:
Migoń, P.
Kasprzak, M.
Traczyk, A.
Tematy:
lidar
DEM
geomorphometry
geomorphological mapping
Sudetes
Pokaż więcej
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Powiązania:
https://bibliotekanauki.pl/articles/294709.pdf  Link otwiera się w nowym oknie
Opis:
The paper reviews recent advances in landform mapping and interpretation in the mountainous terrain of the Sudetes (SW Poland), possible due to the availability of high-resolution airborne LiDAR data. They are particularly useful in the recognition of minor landforms and their spatial patterns in the montane forest belt and in the dwarf pine zone in the most elevated parts of the Sudetes. The use of LiDAR data has allowed to both re-evaluate landforms known before, especially their extent and cross-relationships, as well as to discover surface features that have escaped attention before. The examples discussed include glacial and periglacial landforms in the Karkonosze, morphological signatures of mass movements in the Stołowe Mountains, fluvial features and morphotectonic analysis in the Izerskie Mountains. Although LiDAR immensely increases the scope for landform recognition and mapping, image interpretation should be verified in the field. Despite theoretical capability of LiDAR-derived models to show even landforms 1–2 m in length, 4–6 m seems the more realistic threshold size unless surface features are distinctly linear and continue over long distances.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chronione i rzadkie gatunki roślin użytków zielonych w Sudetach
Protected and rare species plants of grassland in the Sudetes Mountains
Autorzy:
Paszkiewicz-Jasińska, A.
Tematy:
gatunki zagrożone
rośliny naczyniowe
łąki i pastwiska
Pogórze Zachodniosudeckie
Sudety Środkowe
Sudety Wschodnie
threatened species
vascular plants
meadows
pastures
Western Sudetes Foothills
Central Sudetes
East Sudetes
Pokaż więcej
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Powiązania:
https://bibliotekanauki.pl/articles/297178.pdf  Link otwiera się w nowym oknie
Opis:
Przedstawiono występowanie gatunków roślin chronionych, zagrożonych i rzadkich na użytkach zielonych usytuowanych w makroregionach: Pogórze Zachodniosudeckie, Sudety Środkowe i Wschodnie. Na podstawie badań florystyczno-fitosocjologicznych, przeprowadzonych w latach 2009-2014, stwierdzono dziesięć gatunków chronionych, w tym cztery taksony objęte ochroną gatunkową ścisłą. W składzie florystycznym użytków zielonych odnotowano dwa taksony podawane jako gatunki zagrożone wyginięciem na terenie Polski oraz osiem zagrożonych gatunków flory naczyniowej Dolnego Śląska o różnych kategoriach zagrożenia. Użytki zielone objęte badaniami, występujące w Sudetach Środkowych, charakteryzują się większym udziałem gatunków zagrożonych i rzadkich niż w Sudetach Wschodnich i Pogórzu Zachodniosudeckim.
An important part of the landscape of the Sudetes are grassland. They account approximately 50% of agricultural area. These are most often semi-natural communities which their origin, complexity of the structure and species composition are due to human activity. Over the past decades, the disappearance of many meadow communities and related taxons are observed. Intensification of this phenomenon makes it necessary to conduct a study on the current state of grassland. The floristic and phytosociological study was carried out in the years 2009-2014 with the Braun-Blanquet method on the grassland in Sudetes Mts (the Western Sudetes Foothills, The Central Sudetes, The East Sudetes). The resulting material was analysed in terms of endangered and rare species. Evaluation of the plant species was based on the Regulation of the Minister of Environment of 9 October 2014, on the protection of species of plants. In addition, a list of endangered and rare vascular plants of Lower Silesia has been taken into account, which was developed based on the International Union for Conservation of Nature (IUNC) and supplemented by criteria and regional categories. The studies showed that in the floristic composition of part of the analysed grasslands there were 4 strictly protected species and 6 partial protected species. To the most commonly reported include: Colchicum autumnale L., reported slightly less frequently: Platanthera bifolia (L.) Rich., Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerh.), Colchicum autumnale L. Occasionally the presence of Gymnadenia conopsea (L.) R. Br. subsp. conopsea, Trollius europaeus L., Iris sibirica L., Lilium martagon L., Epipactis helleborine (L.) Crantz were reported. Most of these species is placed on the endangered species list of vascular flora of Lower Silesia, as a species exposed to extinction and species with a lower risk of extinction (rare). Trollius europaeus L., Gymnadenia conopsea (L.) R. Br. subsp. conopsea. are in danger of becoming extinct. From species close to the threat but at a lower risk of extinction occurred Dactylorhiza majalis (Rchb.) P.F. Hunt & Summerh and poorly threatened - Colchicum autumnale L. and Platanthera bifolia (L.) Rich. Most of the rare and protected species was found on grassland located in the Central Sudetes, which can be associated with taking inventory more research areas (meadows and pastures), than on the Western Sudetes Foothills and in the East Sudetes.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palaeozoic orogeneses in the Sudetes: a geodynamic model
Autorzy:
Cymerman, Z.
Tematy:
Sudetes
Variscan
Palaeozoic
transpression
extension
orogeny
Pokaż więcej
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/2059384.pdf  Link otwiera się w nowym oknie
Opis:
The Palaeozoic geodynamic evolution of the Sudetes resulted from two successive orogenic events: (1) Ordovician-Silurian geotectonic processes (pre-Variscan stages), and (2) the Variscan orogeny. Early Palaeozoic rifting of Cadomian crustal segments and opening of the Ligerian (Galicia-Massif Central) and/or Saxothuringian Ocean occurred in Ordovician-Silurian times on the northern (peri-Gondwana) periphery of the Bohemian Massif. At the same time, the Góry Sowie terrane with a magmatic arc affinity quite probably developed on the SW margin of Baltica due to subduction of the Tornquist Ocean. Two major structural events characterised the Variscan evolution of the Sudetes: (1) regional-scale ductile thrusting of Late Devonian-Early Carboniferous age, and (2) Early Carboniferous-Early Permian regional extension. Ductile thrusting is characterised by: (I) a general NNE-directed, dextral transpressional stacking of ductile nappes due to oblique collision of the Moldanubian and Moravian microplates in the Eastern Sudetes, and (II) SW- to NW-directed, sinistral transpressional stacking of ductile nappes due to westward lateral extrusion of continental crust in the Central and Western Sudetes, itself a result of oblique indentation of the Central Sudetic oceanic lithosphere. The first Variscan deformation in the Sudetes might reflect a purely convergent setting that evolved into a transpressive setting during oblique convergence. Special attention is given to the geometry and kinematics of intraplate tectonic escape and a model of indentation processes in the Sudetes. The presented new geotectonic model for the Variscan evolution of the Sudetes is consistent with lateral escape of the Saxothuringian terrane as an important way of accommodating Variscan strain in the NE part of the Bohemian Massif. This model explains the lateral expulsion (escape) process as due to the indentation of the Central Sudetic terrane along with the Góry Sowie terrane and by the oblique subduction of the Ligerian/Saxothuringian Ocean(s) (now tectonically dismembered ophiolitic rocks of the Central Sudetic terrane).
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synsedimentary seismotectonic features in Triassic and Cretaceous sediments of the Intrasudetic Basin (U Devěti křížů locality) – regional implication
Autorzy:
Wojewoda, J.
Rauch, M.
Kowalski, A.
Tematy:
Sudetes
Triassic
Cretaceous
injectites
collapse structures
Pokaż więcej
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/2059840.pdf  Link otwiera się w nowym oknie
Opis:
Synsedimentary deformation structures have been recognized in Triassic and Cretaceous sedimentary rocks of the Trutnov Basin, which build a structural and morphological elevation between Červený Kostelec and Upice. Very well preserved sand injection and collapse structures, strike-slip shearings and listric faults occur in the “U Devěti křížů” Quarry. Their shapes and spatial distribution strongly correspond to local tectonic structures within the Intrasudetic Shear Zone (ISZ), especially to the faults which bound the rhomb-shaped depressions and elevations. All these structural sub-units compose the Intrasudetic Basin Suite (IBS). The soft-sediment deformations developed in the shallow subsurface and most likely resulted from the dominantly extensional and strike-slip kinematics within the ISZ.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An insight into a gneiss core of the Orlica–Śnieżnik Dome, NE Bohemian Massif : new structural and U-Pb zircon data
Autorzy:
Redlińska-Marczyńska, A.
Żelaźniewicz, A.
Fanning, C. M.
Tematy:
Cambrian
migmatites
Variscan orogeny
SHRIMP
Sudetes
Pokaż więcej
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/2059909.pdf  Link otwiera się w nowym oknie
Opis:
The Orlica–Śnieżnik Dome in the Sudetes, the NE Bohemian Massif, embraces two formations of felsic gneisses of controversial origin and evolution. Our study shows that despite similar geochemical signatures, they carry systematic minor differences in mineral, isotope, zircon and geothermobarometric characteristics. Four variants of the Gierałtów gneisses include migmatites and have a longer structural history than the Śnieżnik augen orthogneisses. U-Pb SHRIMP analyses yielded U-Pb ages of ~500 Ma for cores and ~498 Ma for wide outer parts of zircon grains in the twice-folded Gierałtów gneisses, and an age of ~500 Ma for a discordant neosome vein. Neoproterozoic metasediments were among precursors of the lithologically diversified Gierałtów Gneiss Formation. First deformation, metamorphism, and migmatisation of these rocks occurred at 515–475 Ma and overlapped with the development and emplacement of a porphyritic S-type granite precursor to the Śnieżnik Gneiss Formation. The metagranite (= Śnieżnik augen orthogneiss) embraced migmatitic xenoliths. Zircon grains from such xenoliths revealed distorted and replaced cores which yielded U-Pb ages that dispersed around 507–487 Ma, whilst wide darker poorly zoned outgrowths yielded ages from ~343 Ma to ~325 Ma (mean ~340 Ma). These outgrowths were interpreted as a record of Carboniferous metamorphism assisted by rich Zr- and U-carrying fluids. The Variscan metamorphic overprint was heterogeneous, and variously affected rocks of the two gneiss formations.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ochrona krajobrazu kulturowego Sudetów Zachodnich na przykładzie gmin Mysłakowice i Bogatynia
Protection of the cultural landscape of the Western Sudetes using the example of the Mysłakowice and Bogatynia communities
Autorzy:
Napierała, P.
Tematy:
krajobraz
Sudety
ochrona
landscape
Sudetes
protection
Pokaż więcej
Wydawca:
Stowarzyszenie Konserwatorów Zabytków
Powiązania:
https://bibliotekanauki.pl/articles/217778.pdf  Link otwiera się w nowym oknie
Opis:
Jednymi z najbardziej interesujących regionów w Sudetach Zachodnich, które wymagają bezwzględnie obszarowej ochrony konserwatorskiej, są gminy Mysłakowice w powiecie jeleniogórskim i Bogatynia w powiecie zgorzeleckim. W obu gminach występuje, niezwykła jak na gminy wiejskie, ilość obiektów zabytkowych. Pomimo różnego stanu ich zachowania już dziś okolica Mysłakowic nazywana jest Doliną Pałaców i Ogrodów, a rejon Bogatyni Krainą Domów Przysłupowych. Już same nazwy wskazuję, że obie gminy mogą stać się najpoważniejszymi polskimi kandydatami na wpis na Listę Światowego Dziedzictw Kulturalnego i Przyrodniczego UNESCO. Aby jednak takie plany mogły się urzeczywistnić potrzebne ponad standardowe działania chroniące ten unikalny krajobraz kulturowy.
One of the most interesting areas in the district is certainly the community of Mysłakowice located between Jelenia Góra and Karpacz, and the community of Bogatynia situated in the Turoszów Valley. Both communities contain historical monuments in numbers rarely encountered in countryside areas. The neighbourhood of Mysłakowic is more and more often called the Valley of Palaces and Gardens, and the area surrounding Bogatynia, among others, the Land of Lusiatan Half-Timbered Houses. Among various assemblies of specialists there are even opinions that it is just these romantic residences around Jelenia Góra and the Lusatian building industry located in the border areas of Poland, Czech and Germany that can be in the immediate future the only possible Polish entries in the UNESCO World Cultural and Natural Heritage List.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detritus from Variscan lower crust in Rotliegend sandstones of the Intra-Sudetic Basin, SW Poland, revealed by detrital high-pyrope garnet
Autorzy:
Biernacka, J.
Tematy:
Permian
Sudetes
sandstone
provenance
detrital garnet
granulite
Pokaż więcej
Wydawca:
Polskie Towarzystwo Geologiczne
Powiązania:
https://bibliotekanauki.pl/articles/191532.pdf  Link otwiera się w nowym oknie
Opis:
It is well established that pebbles in the Sudetic Permian conglomerates were derived from the nearby Variscan massifs of upper-crustal composition. However, the provenance of the sand-size grains remains enigmatic. Electron microprobe analyses (EMPAs) of detrital garnet from upper Rotliegend conglomerates and sandstones exposed at Golińsk, the Intra-Sudetic Basin, showed a distinct assemblage dominated by high-pyrope (high-grossular) almandine, typical of high-grade metamorphic rocks, such as high-pressure granulites. These results, coupled with a previously reported population of similar detrital garnet in the stratigraphically equivalent conglomerates and sandstones of the Karkonosze Piedmont Basin, suggest regional input of detrital lower-crustal material. This detritus was derived ultimately either from the Moldanubian Zone of the Bohemian Massif, or from high-grade rocks of the Orlica-Śnieżnik Massif that were exposed in the Carboniferous–Permian. Permian siliciclastic rocks might have covered a large part of the Sudetes. During the Mesozoic and Palaeogene, these rocks might have been recycled further, contributing high-pyrope garnet, as an accessory mineral, into siliciclastic rocks of the Sudetes and their foreland.
Dostawca treści:
Biblioteka Nauki
Artykuł

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