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    Wyświetlanie 1-36 z 36
    Tytuł:
    Nowe znaleziska mołdawitów w Polsce
    A new discovery of moldavites in Poland
    Autorzy:
    Szopa, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1830276.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Gozdnica
    moldavites
    tektites
    Opis:
    Moldavites represent tektites derived from the Ries impact structure ca. 14 Ma. in southern Germany. Approximately 36 moldavite specimens from Poland have been reported since 2012. Characteristic moldavites features, especially bubbles and inclusions of lechatelierite, are reported in all found moldavites. Almost all of them are genetically connected with the Miocene Gozdnica Formation. Only two have been found in Pleistocene sediments, which are part of the Nysa Łużyca river terrace sediments. In 2020, four more moldavites have been collected from Poland. One specimen was found in Gozdnica village, and the other three in Jaroszów village, which is located ~10 km east of Strzegom. Numerous moldavites are generally found in Poland, widely distributed based on the distance from the Ries crater, exceeding 500 km, experimentally determined based on the transport mechanism. However, the lack of the autochthonous tektites indicates that tektites investigated up to now, had to be redeposited in a fluvial environment, probably from the Lusatian area as well as from the Czech Republic.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2021, 12; 81-84
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kolejne znaleziska mołdawitów w Polsce
    Another finds of moldavites in Poland
    Autorzy:
    Szopa, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1033112.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Gozdnica Fm.
    Polska
    moldavite
    tektite
    Opis:
    22 moldavite species from four different localizations from Poland have been found since 2012. 20 of them are genetically connected with the Gozdnica Fm. (Miocene). Two more were found in Pleistocene sediments, which are part of the Nysa Łużyca terrace river sediments. In last two years, three more moldavites have been collected from Poland. Two specimens were found in Gozdnica, and one in the Lipna village, which is located ~7 km west of Gozdnica.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2018, 9; 123-125
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wybrane reminiscencje z życia prof. dr hab. Łukasza Karwowskiego
    Autorzy:
    Szopa, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2195039.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    prof. dr hab. Łukasz Karwowski
    Opis:
    Wybrane reminiscencje z życia prof. dr hab. Łukasza Karwowskiego
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2023, 14; 9-17
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Leoncin – nowy polski chondryt LL4-6
    Leoncin – the new LL4-6 ordinary chondrite from Poland
    Autorzy:
    Karwowski, Łukasz
    Szopa, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1033149.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    brecciated meteorite
    monomictic breccia
    new meteorite from Poland
    ordinary chondrite LL4-6
    Opis:
    In this study, the new ordinary chondrite LL4-6 from the Leoncin Community, Poland is reported. This meteorite was sold on Allegro, a Polish online e-commerce platform, to a person, who is member of the Meteoritic Society of Poland. The meteorite was sold in 2017, but originally the fall was in 2012. Finder of the meteorite from the Nowe Gniewniewice Village (Leoncin Community) claimed that the meteorite was still warm (the higher temperature was result after hit in the roof) after fall and made a whole in metal roof (which was repaired soon after the fall). For five years after fall of the meteorite, it stayed in the finder hands. The total known weight of the meteorite is 111.3 g. The main mass is in the M. Burski’s collection (~70 g). Two plates with the total mass 20 g are stored at the Earth Science Museum, Faculty of Natural Sciences, University of Silesia in Katowice, Poland. The meteorite is strongly brecciated. All clasts are rounded, reaching up to 1 cm in size. The matrix is very fine grained. The biggest as well as clasts are represented by complex olivine-feldspar chondrule. Numerous clasts do not have any chondrules or their fragments as well. The fusion crust of the Leoncin meteorite is typical, having porous and glassy (isotropic) the most external part. The glassy zone is rich in Cr-rich spinels, where relicts of unmolten olivines and pyroxenes are present. The next zone is so-called the black vein zone. The veins are represented my metallic phases or Fe sulphide. The most common mineral in the fresh meteorite is olivine, having Fo and Fa up to 69 and 31, respectively. Pyroxenes are characterised by a general chemical formulae as follow: Fs9.78–9.7 Wo44.77–44.2 En46.02–45.53. Almost all feldspars are represented by plagioclases (Ab83.5–86.76Or2.54–5.53An9.42–12.5). Metallic phases are mostly represented by kamacite, taenite and rare tetrataenite (the richest in Ni phase; 55.92–49.21 wt.%). Troilite, spinel, ilmenite, apatite and merrillite are also noted. Based on chemical composition of investigated minerals, the Leoncin meteorite can by classified as a LL ordinary chondrite. It has been confirmed by fayalite content (avg. 30.33%) as well as the forsterite content in pyroxenes (avg. 25.32%). Brecciating of the meteorite, the same mineral content of the chondrules and their matrix shows that the meteorite is an example of monomictic breccia. Metamorphic changes of the clasts, their quality, size and mineral content, together with the chemical composition of selected minerals, indicate the LL4-6 type of the meteorites. The Leoncin meteorite seems to be a regolith, that formed far from the collision place on the asteroid. This situation is confirmed by the limitation of gassy material only to the fusion crust and lack of shock changes in the minerals. The parent body might be similar to the 25143 Itokawa asteroid or has connection with the Flora family.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2020, 11; 31-44
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Datowanie metamorfizmu z początku Układu Słonecznego: wiek U-Pb apatytu z meteorytu Leoncin (chondryt zwyczajny LL5-6 o charakterze brekcji monomiktycznej)
    U-Pb age of the early Solar System metamorphism by using apatite from the Leoncin meteorite (LL5-6 ordinary chondrites – monomictic breccia)
    Autorzy:
    Szopa, Krzysztof
    Karwowski, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1830279.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    LA-ICP-MS
    Leoncin
    SEM
    formation ages
    meteorites
    Opis:
    The U-Pb system is a useful chronometer for understanding the formation history of chondritic materials. Modern studies showed that the formation ages of chondrites (4.55–4.56 Ga) effectively equal the formation age of the solar system. Recently, researchers have undertaken U-Pb isotopic studies of phosphates separated from equilibrated ordinary chondrites, which are the major hosts for U and are enriched by an order of magnitude or more relative to the bulk rock (typical U concentrations of 0.1–3 ppm in phosphates). The observed Pb-Pb model ages for these phosphates range from 4.563–4.502 Ga, with an analytical precision of 1 Ma and the U-Pb system is apparently concordant. They also argued that the Pb-Pb ages of the phosphates from several H chondrites show a negative correlation with metamorphic grade. They concluded that thermal processing of the equilibrated chondrites took place over a 60 Ma interval and grain size of the phosphates increases with the degree of metamorphism. In the Leoncin meteorite, apatite reveal the 207Pb/206Pb age, which is 4549±61 Ma. The obtained apatite age in the Leoncin meteorite reflects the early solar system formation process. Moreover, the age is an example of the early solar system metamorphism, which confirms a slightly younger event of secondary changes of the parent body for this meteorite. It is also the first isotopic age of a Polish meteorite.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2021, 12; 85-91
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pierwszy tektyt z Wysp Andamańskich (Wyspa Havelock)
    The first tektite from Havelock Island in India
    Autorzy:
    Szopa, Krzysztof
    Kotowiecki, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/1830322.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Andaman
    Havelock Island
    Nicobar
    strewn field
    tektites
    Opis:
    A tektite is a rare natural glass that forms when an extra-terrestrial body struck the Earth. Tektites can be found in at least five widely separated locations on Earth, which are called strewn fields. There are four known strewn fields: the 35.5 Ma North American strewn field (linked to the Chesapeake crater, North America), the 14.4 Ma Central European strewn field (linked to the Ries crater in Germany), the Ivory Coast strewn field of unknown age (linked to the Bosumtwi crater in Ghana, West Africa), and the 0.8 Ma Australasian strewn field (source crater still unknown, although a large crater in Western Cambodia, Lake Tonle Sap, has been proposed). The last strewn field is known for the distribution of the biggest tektite group (i.e., philippinites, billitonites, javanites, indochinites). A tektite on Havelock Island in India, has also been recently identified. This is the first tektite reported from the Andaman and Nicobar islands. This tektite is composed of indochinite, having a typical dark colour and diagnostic chemical composition. Morphologically, a lack of cracks and abraded edges, both indicate short transport and rapid shallow burial.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2021, 12; 92-97
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ fali uderzeniowej na zmiany tektoniczne osadów jurajskich wokół krateru Ries – studium SEM wybranych skamieniałości
    The impact shockwave interaction with Jurassic deposits related to the Ries crater – SEM study of selected fossils
    Autorzy:
    Brachaniec, Tomasz
    Szopa, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1033047.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Germany
    Ries
    belemnites
    fossils
    shockwave
    tectonic
    Opis:
    Upper Jurassic sediments of the Ries crater contain numerous fossils including massive and calcite belemnites, which show brittle deformations caused by impact shockwave. The structures are observed in macro and micro scale. SEM observations allowed to distinguish different tectonic forms in investigated material, what show the individualism of breccias formed during the Ries impact.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2016, 7; 21-26
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    NWA 14360 – Nowy meteoryt z Nigru
    A new meteorite from Niger: NWA 14360
    Autorzy:
    Karwowski, Łukasz
    Szopa, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2034032.pdf
    Data publikacji:
    2022-03
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    ordinary chondrites
    NWA 14360
    meteorite
    meteorites classification
    Opis:
    The new meteorite was bought as one single stone in 2019 from a dealer in Niger by Tomasz Jakubowski. The meteorite has fusion crust. It contains chondrules of different types with dominance of barred olivine chondrules, with diameter to 1.5 mm. Px and Ol are 78.1 vol%. of the meteorite mass. Pl is up 11.8 vol%. Average fayalite content is 24.93. Metallic phases are 3.0 vol%. Troilite is up to 5.9 vol%. Spinel (Cr-spinel) is up to 0.9 vol%. Average content of the secondary Fe-rich minerals (e.g. hydroxides) is 0.4 vol%. Feldspar composition is: Ab80.2Or5.0An14.8. Mean content of Al2O3, MgO and TiO2 in chromium spinel is 6.70 wt%, 2.05 wt% and 2.02 wt%, respectively. Metal phases are kamacite and tetrataenite. The kamacite has a Ni content in the range 5.83–6.81 wt%, while the Co content is in the range 0.39 to 0.56 wt%. Tetrataenite is has Ni content from 49.68 to 50.46 wt%, and Co up to 0.05 wt%. High-Ca monoclinic pyroxene, similar to diopside, is very rare. Accessory minerals are: chlorapatite and merrylite. Base on chemistry and petrography, the meteorite is classified as ordinary chondrite (L5). The main mass, a 9190 g specimen, is in Krzysztof Socha private collection. Small fragments with the total mass 71 g are stored in Museum of Earth Sciences (catalogue no: WNoZ/Mt/110) at University of Silesia in Katowice, Poland. 39 g was used for thin-section preparation and spectroscopic investigation (Mössbauer spectroscopy).
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2022, 13; 47-59
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pierwsze znalezisko polskich mołdawitów
    The first discovery of Polish moldavites
    Autorzy:
    Brachaniec, Tomasz
    Karwowski, Łukasz
    Szopa, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1032960.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Polska
    Ries crater
    meteorites
    moldavites
    strewnfield
    tektites
    Opis:
    In Lower Silesia, in the late Miocene sediments moldavites were discovered. Finding of polish moldavites may change the existing model of tektites distribution, after the impact in the Ries crater area. Further studies are planned and should bring a new information.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2013, 4; 37-38
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Osady molasowe źródłem mołdawitów
    Molasse deposits as a source of moldavites
    Autorzy:
    Brachaniec, Tomasz
    Szopa, Krzysztof
    Szczyrba, Mirosław
    Powiązania:
    https://bibliotekanauki.pl/articles/1033000.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    melting
    molasse
    moldavite origin
    substrewnfields
    tektites
    Opis:
    Moldavite are result of melting and mixing of ejecta Cenozoic deposits from Ries crater. The Czech moldavites have different Al, Ca and Si content in contrast to tektites from Lusatian area. Differences in chemical composition of moldavites are caused by local interbedded layers of Tertiary Obere Süâwasser Molasse, which are represented by: quartz sands and limestons with clays.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2014, 5; 25-29
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nowe znalezisko meteorytu w południowej części województwa łódzkiego
    New meteorite from the southern part of the Łódź Voivodeship, Poland
    Autorzy:
    Karwowski, Łukasz
    Szopa, Krzysztof
    Woźniak, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1830272.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Kuźnica
    meteorites
    new meteorite from Poland
    ordinary chondrite H5
    Opis:
    An anonymous person from Częstochowa in Poland found a new meteorite during the summer of 2008. The specimen was found in eolian sand, where exotic grains connected with glacial activity were not observed. The suspected meteorite was kept in the founder’s possession until the autumn of 2018. This was when the holder of the meteorite contacted the owners of the woreczko.pl webpage, which is dedicated to meteorite identification. Moreover, the webpage was developed and operated by meteorite collectors Jan Woreczko and Wadi. After meeting, Jan and Wadi bought the meteorite, which is now part of their collection. After the meeting, Jan and Wadi bought the meteorite (total meteorite mass 2143 g), which is now part of their collection. Three fragments with their total mass 20.74 g as well as two thin-sections (7.03 g) are deposited at the Earth Sciences Museum, University of Silesia in Katowice. The fusion crust is black to brownish, typical for a chondrite. Regmagliptes are visible. The meteorite is characterized by chondrules, which range in diameter from 0.015 to 1.000 mm in diameter. The most common type of chondrule is represented by olivine (Ol). The barred Ol texture, showing elongate, sub-parallel bars of olivine with clear pyroxenes (Px) and oligoclase between the bars. The second characteristic type is represented by Ol-Px porphyritic chondrules and radial Px chondrules. The matrix is not recrystallized; and the clasts are up to 0.1 to 0.2 mm in diameter. Px and Ol, plagioclase, metallic phases, troilite, and spinel (Cr-spinel) are up to 71.9 vol.%, 11.2 vol.%., 7.0 vol.%., 4.2 vol.%., and 1.1 vol.% of the meteorite, respectively. The average content of the secondary minerals is 4.4 vol.% (close to the outermost part is up to 8–10 vol.%. The meteorite is classified as a H5 ordinary chondrite, based on the Ol and Px composition (Fa/Fs), with an official name ‘Kuźnica’.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2021, 12; 41-57
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Skład chemiczny i mineralny Szkła Pustyni Libijskiej: badania wstępne z wykorzystaniem mikroskopu skaningowego (SEM) oraz mikrosondy elektronowej (EMPA)
    Chemistry and mineral inclusions in the Libyan Desert Glass: preliminary SEM and EMPA investigation
    Autorzy:
    Szopa, Krzysztof
    Brachaniec, Tomasz
    Szczyrba, Mirosław
    Powiązania:
    https://bibliotekanauki.pl/articles/1033037.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    EMPA
    Libyan Desert Glass
    SEM
    chemical composition
    mineral inclusions
    tektites
    Opis:
    In this study, fragment of the Libyan Desert Glass was investigated by using scanning electron microscope (SEM) and electron microprobe (EMP). The analyses reveal two differ areas in chemistry. the first one is homogenous in composition, but the second one is slightly enriched in Ti, and Fe content. During SEM and EMP observation, a relict of primary minerals was noted as a cracked zircon crystals.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2015, 6; 103-106
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czy w Polsce są autochtoniczne tektyty?
    Are autochthonous tektites in Poland?
    Autorzy:
    Brachaniec, Tomasz
    Szopa, Krzysztof
    Karwowski, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1033045.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Polska
    autochthonous
    moldavite
    strewn field
    tektite
    Opis:
    Undoubtedly, the river transport is very important in tektites distribution. Most of the moldavites are located in fluvial sediments, what indicates their redeposition origin. Similar situation is on the territory of Poland. Finding of the autochthonous Polish tektites seems very difficult and requires further fieldworks.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2016, 7; 17-20
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polskie mołdawity – podsumowanie dotychczasowej wiedzy
    Polish moldavites – a summary of existing knowledge
    Autorzy:
    Brachaniec, Tomasz
    Szopa, Krzysztof
    Karwowski, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1033074.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Miocene
    Polska
    Ries
    fluvial transport
    moldavites
    tektites
    Opis:
    Up to now, twenty Polish moldavites were recovered from fluvial deposits of Gozdnica formation. Apart from typical bottle green colour, moldavites also yield other typical features for tektites like presence of bubbles and inclusions of lechatelierite. Low degree of corrosion and palaeogeography suggest river transport flow from Lusatia to the east direction in the Miocene.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2017, 8; 18-22
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polskie mołdawity : obecny stan wiedzy i perspektywy nowych znalezisk
    Polish moldavites : the current state of knowledge and perspectives of new finds
    Autorzy:
    Szopa, Krzysztof
    Brachaniec, Tomasz
    Karwowski, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2075990.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    mołdawit
    tektyt
    Nördlinger Ries
    miocen
    plejstocen
    Polska
    moldavite
    tektite
    Miocene
    Pleistocene
    Polska
    Opis:
    The first Polish moldavites were discovered in 2012. This paper is a summary of the distribution and inventory of these Polish tektites. Up to the present, 28 moldavites have been described from seven different sandpits. These moldavites were deposited in the upper Miocene fluvial deposits of the Gozdnica Formation, as well as in the Pleistocene river terraces. Apart from a typical bottle green colour, moldavites also have other diagnostics features for this class of tektites, such as the presence of bubbles, inclusions oflechatelierite, as well as the same, homogeneous chemical composition. Fluvial redeposition was interpreted as the main process which determined moldavite distribution. Despite the most recent find of one moldavite specimen in Bielawy, all of these specimens indicate both Lusatian as well as sub-strewn Czech fields as their supply area.
    Źródło:
    Przegląd Geologiczny; 2019, 67, 8; 662--667
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ancylite-(Ce) from quartz-calcite-chlorite veins in phyllite of the Opava Mountains (SW Poland)
    Autorzy:
    Janeczek, Janusz
    Szopa, Krzysztof
    Fabiańska, Monika
    Powiązania:
    https://bibliotekanauki.pl/articles/2060272.pdf
    Data publikacji:
    2020
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    ancylite-(Ce)
    phyllite
    CO2-rich hydrothermal solution
    Opava Mts.
    Polska
    Opis:
    Ancylite-(Ce) occurs in quartz-calcite-chlorite veins crosscutting the foliation of phyllite in the Dewon Quarry in the foothills of the Opava Mountains of the eastern Sudetes, south-west Poland. Irregularly shaped grains of ancylite are up to 67 μm long and 22 μm wide. The compositional range of ancylite, determined by electron microprobe, is expressed by the empirical formula: (Sr0.65-0.55Ca0.19-0.14Fe0.03-0.00)∑0.87-0.69 (Ce0.58-0.50Nd0.26-0.22La0.26-0.21Pr0.06-0.05Sm0.05-0.04Gd0.07-0.03Dy0.01-0.00)∑1.29-1.05 (CO3)2(OH1.07-0.99F0.22-0.0.06)∑1.29-1.05· 0.95-0.93H2O. Ancylite crystallized directly from CO2-rich hydrothermal solutions as the last mineral in the veins following precipitation of calcite. The solution temperature, estimated using various chlorite geothermometres, was in the range of 260-340°C.
    Źródło:
    Geological Quarterly; 2020, 64, 3; 801--806
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Megacrysts of kyanite from Baranec Mt., Western Tatra Mountains, Slovakia
    Autorzy:
    Pyka, Paulina
    Szopa, Krzysztof
    Gawęda, Aleksandra
    Powiązania:
    https://bibliotekanauki.pl/articles/127621.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Mineralogiczne
    Tematy:
    kyanite
    metamorphic envelope
    Western Tatra Mts.
    Western Carphatians
    Opis:
    Large crystals of kyanite (<15 cm in size) occur in quartz segregations in Paleozoic gneissses on Baranec Mt., Western Tatra Mountains, northern Slovakia. Blue kyanite crystals coexist with quartz and plagioclase. The kyanite contains inclusions of apatite, monazite. gamet, rutile and biotite and overgrowths of retrograde sillimanite. muscovite and biotite. The kyanite crystals are the largest found up to now in the Tatra crystalline massif or in the other Western Carpathians crystalline cores. Kyanite. with the co-existing mineral assemblage, is indicative of a HP stage duiing Hercynian metamorphism of the Western Tatra Mountains.
    Źródło:
    Mineralogia; 2013, 44, 1/2; 31-37
    1899-8291
    1899-8526
    Pojawia się w:
    Mineralogia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trynityt – wstępne dane SEM oraz XRD szkliwa nuklearnego z USA
    Preliminary SEM and XRD investigation on nuclear trinitite from USA
    Autorzy:
    Brachaniec, Tomasz
    Szopa, Krzysztof
    Krzykawski, Tomasz
    Broszkiewicz, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/1033027.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    XRD
    glass
    nuclear bomb
    tektite
    trinitite
    Opis:
    Trinitite is a glass produced as a result of a nuclear explosion. The characteristic feature of the investigated material are bubbles and presence of incompletely melted quartz grains.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2015, 6; 38-41
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Migracja żelaza w indochinicie podczas jego wygrzewania w 1100°C: badania EMPA i XRD
    Iron migration in indochinite during heating in 1100°C: EMPA and XRD investigation
    Autorzy:
    Brachaniec, Tomasz
    Szopa, Krzysztof
    Krzykawski, Tomasz
    Broszkiewicz, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/1033002.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    heating
    indochinite
    iron
    tektites
    Opis:
    Iron reach tektite represented by indochinite was examined by using EMP and XRD after 120 min long heating in oxide atmosphere at 1100°C. The electron microprobe analyses as well as BSE images reveal loss of iron in tektite bulk composition. Iron as a element was incorporated into a new, probable mineral phase that is mostly present on the surface of the indochinite. Size and textural relation of the Fe-rich phase does not permit to analize it. XRD data does not reveal presence of any mineral rich in Fe including metallic iron.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2014, 5; 47-51
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fragmenty kopalnego meteorytu z Lechówki: charakterystyka mineralogiczna i geochemiczna
    Fragments of strongly weathered meteorite from Lechówka: mineralogical and geochemical characterisation
    Autorzy:
    Szopa, Krzysztof
    Karwowski, Łukasz
    Krzykawski, Tomasz
    Brachaniec, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1033087.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Cretaceous-Paleogene boundary
    Lechówka
    fossil iron meteorites
    kamacite
    meteorites
    paleometeorite
    schreibersite
    taenite
    Opis:
    Fossil iron meteorites are extremely rare in the geological sedimentary record. In the boundary clay from the outcrop at the Lechówka quarry (Poland), fragments of the paleometeorite were found in the Cretaceous-Paleogene boundary clay layer. The fragments of meteorite (2–6 mm in size) and meteoritic dust are metallic-grey in colour. Analyses of the meteorite from Lechówka reveal the presence of Ni-rich minerals with a total Ni amount of 2–3 wt%. They are represented by: taenite, kamacite, schreibersite, Ni-rich magnetite, and Ni-rich goethite. The investigated remnants of paleometeorite apparently represent an independent fall and does not seem to be derived from the K-Pg impactor.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2017, 8; 100-109
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jak odróżnić oryginał od fałszywek: kopalny meteoryt z Lechówki
    How to distinguish the original from fakes: the fossil meteorite from Lechówka
    Autorzy:
    Szopa, Krzysztof
    Karwowski, Łukasz
    Krzykawski, Tomasz
    Brachaniec, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1033111.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Lechówka meteorite
    fake meteorite
    fossil meteorite
    Opis:
    Value of meteorites can be explained at least in two aspects. From the scientific point of view they are priceless objects, which can bring important information about the very beginning of the Universe. Because of their rarity anduniqueness, the meteorites often are extremely expensive in the term of a commercial value. This situation is used by dishonest sellers who offer fake meteorites. It has happened with the paleometeorite remnants, which were originallyfound in Cretaceous-Paleogene clay boundary in Lechówka, Poland. The so-called fake Lechówka remnants were offered by one seller on domestic online shops. All grains had certificate of authenticity that was included with the sold grains. In this paper we described the most common and diagnostic features, which can be easily applied to distinguish the original meteorite remnants from the fake ones.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2018, 9; 112-122
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Topliwość tektytów
    Tektites melting
    Autorzy:
    Brachaniec, Tomasz
    Szopa, Krzysztof
    Krzykawski, Tomasz
    Broszkiewicz, Adam
    Szczyrba, Mirosław
    Powiązania:
    https://bibliotekanauki.pl/articles/1032996.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    experiment
    melting
    tektites
    temperature
    Opis:
    In this paper, results of melting experiment of tektites are presented. Tektites from four strewnfields: North American, Central European, Ivory Coast and Australasian were used. The fragments of investigated tektites were heated in oxide atmosphere in 1100oC in two time intervals: 5 and 120 minutes. The temperature of 1100oC is too low for completely melting of the studied material despite to heating in the same conditions but in small area (eg. in a spot).
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2014, 5; 21-24
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Petrogenesis of kyanite-quartz segregations in mica schists of the Western Tatra Mountains (Slovakia)
    Autorzy:
    Pyka, Paulina
    Gawęda, Aleksandra
    Szopa, Krzysztof
    Muller, Axel
    Sikorska, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/127586.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Mineralogiczne
    Tematy:
    kyanite-quartz segregation
    aluminium mobilization
    mass-balance
    Tatra Mountains
    Opis:
    In the Tatra Mountains (Slovakia) metamorphic complex, kyanite-quartz segregations with biotite-rich selvage occur in mylonitized mica schists. In this paper, the problem of fluid flow and aluminium mobility during the uplift of the crystalline massif, and the position of the segregations in the history of Western Tatra metamorphic complex, is adressed. The reaction Alm + Rt Ilm + Ky + Qtz is considered to be the result of a pressure drop from above to below 9 kbar. Ti-in-biotite geothermometry shows the temperature range to be 579- 639ºC that is related to heating and decompression associated with granite intrusion. Major-element mass-balance calculations show that Al remained stable in the selvage + segregation system whereas other elements (e.g. Cr, HFSE) were mobilized. The kyanite-quartz segregations formed from local fluids generated during dehydration of the metapelitic rocks during uplift. The main mechanism was likely diffusion-driven mass-transfer into extensionrelated cracks.
    Źródło:
    Mineralogia; 2014, 45, 3/4; 99-120
    1899-8291
    1899-8526
    Pojawia się w:
    Mineralogia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sferule z granicy Kreda-Paleogen (Lechówka, Polska) – wstępne dane
    Spherules from the Cretaceous–Paleogene boundary (Lechówka, Polska) – preliminary data
    Autorzy:
    Brachaniec, Tomasz
    Szopa, Krzysztof
    Karwowski, Łukasz
    Krzykawski, Tomasz
    Salamon, Mariusz
    Brom, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1033022.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Cretaceous–Paleogene boundary
    impact origin
    smectite
    spherule
    spinel
    Opis:
    Samples of boundary clay from Cretaceous–Paleogene deposits from Lechówka, Poland were examined for spherules to confirm the impact origin of the sediment. The chemical composition of investigated spherules show similarities to material from the K–Pg boundary from Stevns Klint. The impact genesis of the spherules is confirmed by the presence of nickel-rich spinel grains on their surfaces. The deposits with spherules are built by smectite with Al and Mg enrichment. This cheto smectite is forming as a result of the weathering of the impact glass.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2015, 6; 17-22
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Continuous magma mixing and cumulate separation in the High Tatra Mountains open system granitoid intrusion, Western Carpathians (Poland/Slovakia): a textural and geochemical study
    Autorzy:
    Gawęda, Aleksandra
    Szopa, Krzysztof
    Włodyka, Roman
    Burda, Jolanta
    Crowley, Quentin
    Sikorska, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/138682.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Tatra granitoids
    magma mixing
    cumulate formation
    granitoidy tatrzańskie
    mieszanie magmy
    łączenie formacji
    Opis:
    In this study the formation of the polygenetic High Tatra granitoid magma is discussed. Felsic and mafic magma mixing and mingling processes occurred in all magma batches composing the pluton and are documented by the typical textural assemblages, which include: mafic microgranular enclaves (MME), mafic clots, felsic clots, quartz-plagioclase-titanite ocelli, biotite-quartz ocelli, poikilitic plagioclase crystals, chemically zoned K-feldspar phenocrysts with inclusion zones and calcic spikes in zoned plagioclase. Geochemical modelling indicates the predominance of the felsic component in subsequent magma batches, however, the mantle origin of the admixed magma input is suggested on the basis of geochemical and Rb-Sr, Sm-Nd and Pb isotopic data. Magma mixing is considered to be a first-order magmatic process, causing the magma diversification. The cumulate formation and the squeezing of remnant melt by filter pressing points to fractional crystallization acting as a second-order magmatic process.
    Źródło:
    Acta Geologica Polonica; 2019, 69, 4; 549-570
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Neoproterozoic ophiolite exotic blocks in the Outer Western Carpathians, southern Poland : a record of the fast ocean-floor cooling and alterations
    Autorzy:
    Gawęda, Aleksandra
    Szopa, Krzysztof
    Waśkowska, Anna
    Golonka, Jan
    Krzykawski, Tomasz
    Kalinichenko, Tatiana
    Powiązania:
    https://bibliotekanauki.pl/articles/27323309.pdf
    Data publikacji:
    2023
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Outer Carpathians
    Neoproterozoic
    ophiolite mélange
    ocean floor
    Opis:
    Ophiolitic blocks, represented by metagabbro and serpentinite containing relict pyroxene, olivine, baddeleyite, zirconolite, Ni-pyrite and pyrrhotite, were found as exotic blocks in an olistostrome in the Magura Nappe, Outer Western Carpathians. The geochemical and isotopic features of the blocks suggest they represent mantle-derived rocks, with within-plate geochemistry signatures, modified by subduction, with lithospheric mantle input. A U-Pb apatite cooling age (614 ±3 Ma) is within age uncertainty of a published U-Pb zircon magmatic crystallization age (~614 Ma) implying rapid post-crystallization cooling. Pervasive alteration with replacement of primary minerals by low-temperature assemblages is observed in all rock fragments and is interpreted as contemporaneous with shearing. The secondary mineral assemblages and temperature modelling allow the interpretation that the pervasive ocean-floor metamorphism is the alteration in these meta-mafic rocks. These ophiolitic fragments can be linked to the Neoproterozoic break up of Rodinia/Pannotia.
    Źródło:
    Geological Quarterly; 2023, 67, 1; art. no. 9
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Silesian Ridge in the light of petrological analyses and LA-ICP MS U-Pb analyses of the cohesive debrites from the Istebna Formation (Silesian Nappe, Outer Western Carpathians, Poland)
    Autorzy:
    Szczuka, Monika
    Gawęda, Aleksandra
    Waśkowska, Anna
    Golonka, Jan
    Szopa, Krzysztof
    Chew, David
    Drakou, Foteini
    Powiązania:
    https://bibliotekanauki.pl/articles/2187194.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Outer Carpathians
    Silesian Ridge
    exotic clasts
    U-Pb dating
    zircon
    rutile
    Opis:
    Exotic clasts present in flysch deposits of the Western Outer Carpathians enable investigation and reconstruction of the eroded crystalline basement of the Silesian Ridge. The flysch rocks of the Istebna Formation (Jasnowice Member: Paleocene) in the Silesian Nappe contain magmatic and metamorphic clasts derived from the Silesian Ridge basement. The crystalline rock fragments acquired from cohesive debrites were analyzed petrographically and geochemically, and zircon and rutile crystals were subject to LA-ICP-MS U-Pb dating. Granitoid clasts yielded Meso-Variscan U-Pb zircon ages (325.7 and 330.6 Ma), with older (Neoproterozoic to Paleoproterozoic) inherited cores and eNd330 = –12.0 (TDM age of 1.98 Ga). The orthogneiss clast yielded a protolith age of 1635 Ma and fingerprint of thermal reworking at ~288 Ma. Zircon crystals from the detrital clasts yielded similar U-Pb zircon ages to the granitoid clasts (311.5 to 391 and 331 Ma). The rutile crystals from sandstone yielded concordia age of 344.7 Ma. Zircon crystals from paragneiss, interpreted as a granitoid envelope, yielded 238U/206Pb ages between 557 and 686 Ma and include an inherited core of age ~1207.4 ±33.8 Ma. Age data from exotic clasts and the detrital zircon and rutile fraction suggest the core part of the Silesian Ridge was a Neoproterozoic to Mesoproterozoic envelope intruded by Meso-Variscan granitoid plutons.
    Źródło:
    Geological Quarterly; 2022, 66, 2; art. no. 20
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Family recreation zones as a supportive environment for physical activity in the opinion of its users
    Autorzy:
    Szopa, Sylwia
    Sas-Nowosielski, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2005060.pdf
    Data publikacji:
    2016-03-31
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    physical recreation
    outdoor gyms
    adults
    Opis:
    The main purpose of this study was to examine how the relatively new initiative supporting active leisure of people, i.e., Family Recreation Zones, is perceived by its users. Data were collected from 215 persons aged 13 to 96 (M=44.19, SD 18.08). For nearly nine in ten persons Zones are the only space where they spend their leisure time actively. The main attractors are free access and the open air. Interestingly, for many respondents the proximity of playgrounds was not a benefit but rather a barrier to visiting Zones. Other barriers were the season of the year, a modest range of exercise devices, their damage, poor illumination, a perceived lack of safety and a lack of professional support during exercising.
    Źródło:
    The New Educational Review; 2016, 43; 117-124
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Correlates of Physical Activity Older Adults Attending to Senior Citizens’ Clubs
    Autorzy:
    Sas-Nowosielski, Krzysztof
    Szopa-Wiśnios, Sylwia
    Powiązania:
    https://bibliotekanauki.pl/articles/2034166.pdf
    Data publikacji:
    2022-03-31
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    determinants
    physical activity
    senior clubs
    Opis:
    Assessing the correlates of older adults’ leisure-time physical activity (PA) is essential to effectively promote these populations’ active lifestyles. Few studies have been published about PA correlates of older adults in Poland. The aim of this study was thus to identify correlates of self-reported PA of older adults. Participants were 577 members of senior citizen clubs aged 70.72±8.04 years. Questionnaires were used to collect data of PA, psychological, perceived social and environmental variables related to PA. Results of regression analyses with four levels of PA as dependent variables and psychosocial factors as independent variables showed that all models were significant, explaining the variance from 8% (walking) to 20% (VPA). Age and accessibility of fitness facilities were significant predictors in the final regression equation used to explain all levels of PA except walking. Time spent on TV predicted walking, LPA and MPA.
    Źródło:
    The New Educational Review; 2022, 67; 80-90
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Usage Patterns, Exercise Motives, and Perceived Benefits and Limitations of Outdoor Gyms: A Case from a Provincial City in South Poland
    Autorzy:
    Sas-Nowosielski, Krzysztof
    Szopa-Wiśnios, Sylwia
    Powiązania:
    https://bibliotekanauki.pl/articles/20311582.pdf
    Data publikacji:
    2023-09-30
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    outdoor gyms
    exercise
    public health
    motives
    Opis:
    Installing outdoor gyms (OGs) has become popular in many countries worldwide. To date, data about the perceptions and behaviours of its users are still being determined. Therefore, this study aimed to determine who and how uses the facilities and how their users perceive them. The sample comprised 1,036 exercisers aged 44.1±16.1 years. For over 85% of users, OGs are the facilities where they follow their planned exercise programme, with 56.2% declaring exercising solely there. The main perceived advantages of OGs are free-to-access (42.6%) and outdoor location (40.4%), while disadvantages are dependence on the season (57.2%) and the technical condition of devices (24.9%). The predominant motive for using OGs is to maintain and improve their health (38.6%) and stay fit (27.9%). OGs are an essential alternative to indoor gyms in situations of limited availability under pandemic conditions. For many people, they are even the only place to exercise.
    Źródło:
    The New Educational Review; 2023, 73; 81-94
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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