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    Tytuł:
    Badanie zawartości radionuklidów kosmogenicznych oraz składu mineralnego skał w celu weryfikacji ich pozaziemskiego pochodzenia
    Investigation of the content of cosmogenic radionuclides and the mineral composition of rocks for verification of their extraterrestrial origin
    Autorzy:
    Tymiński, Zbigniew
    Burakowska, Agnieszka
    Jaśkiewicz, Artur
    Tymińska, Katarzyna
    Stolarz, Marcin
    Kuć, Michał
    Marganiec-Gałązka, Justyna
    Czudek, Marek
    Saganowski, Paweł
    Iller, Edward
    Krzesińska, Agata M.
    Powiązania:
    https://bibliotekanauki.pl/articles/30146493.pdf
    Data publikacji:
    2024-04
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteorite
    Łowicz
    pseudometeorite Wyszków
    cosmogenic radionuclides
    Opis:
    Cosmogenic radionuclides in meteoroids are produced in space in the process of activation. These nuclides have various lifetimes in range from a few days to several hundred thousand years and can therefore be helpful in solving several problems related to the study of meteoroids and their remains, both in space and on the Earth. The simplest application of cosmogenic radionuclide decay in meteorites is to determine the terrestrial age of meteorites, especially those whose fall has not been observed. In this article, we present an additional application of cosmogenic radionuclide measurements, namely for the verification of origin of rocks that show equivocal features and may potentially represent meteorites.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2024, 15; 142-153
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka petrologiczna i chemiczna meteorytu Antonin – klasyfikacja oraz zarys historii termicznej i uderzeniowej
    Petrology and chemistry of the Antonin meteorite – classification and reconstruction of thermal-collisional history
    Autorzy:
    Krzesińska, Agata
    Powiązania:
    https://bibliotekanauki.pl/articles/2195010.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Antonin
    L5 chondrite
    meteorite
    Opis:
    Meteorite Antonin fell on 15th July 2021 in Poland. The bolide was observed and recorded by cameras of European Bolide Network, Astronomical Institute of Czech Academy of Sciences. Soon after the fall, specimen of meteorite was recovered and delivered for classification. In this paper, analytical results collected in order to classify the Antonin meteorite are reported. Antonin is L5 ordinary chondrite with deformation degree S3 or S4. This paper includes reports of heterogeneous texture of chondrite and reports on chemical composition of minerals: olivine, low-Ca pyroxene, diopside and glasses, phosphates, chromite and ilmenite, as well as sulfides and native FeNi alloy. The minerals reveal different equilibration degree. Analysis of the texture and chemical composition of Antonin allows to put the meteorite in the framework of current classification of meteorites. It also facilitates making hypotheses on the thermal and collisional processes, that the meteorite experienced while on its parent body.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2023, 14; 114-133
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Klast stopu impaktowego w brekcji pułtuskiej
    Impact melt clast in the Pułtusk breccia
    Autorzy:
    Krzesińska, Agata M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033107.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    H chondrites
    Late Heavy Bombardment
    Pułtusk
    impact melt
    Opis:
    The Pułtusk H chondritic breccia records a complex impact history and contains various products of impact metamorphism. Here, impact melt lithology is described, which is embedded into the Pułtusk breccia. The impact melt clast is formed by microcrystalline quenched silicates and metal-troilite globules and chondritic relicts are retained in the melt. The relicts record strong shock deformation, S4–S5 and they have well developed foliated fabric of metal grains. The melt formed by severe collision and impact melting on the parent body. The chondritic material was superheated and molten. Silicate melt unmixed from the metal-sulphide melt and both were rapidly quenched. Most likely the event occurred during Late Heavy Bombardment, ~3.6 Ga.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2018, 9; 74-91
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radionuklidy kosmogeniczne w meteorycie Antonin
    Cosmogenic radionuclides in the Antonin meteorite
    Autorzy:
    Tymiński, Zbigniew
    Burakowska, Agnieszka
    Krzesińska, Agata
    Tymińska, Katarzyna
    Kuć, Michał
    Iller, Edward
    Kmieciak, Kryspin
    Powiązania:
    https://bibliotekanauki.pl/articles/2195017.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteoroid
    fireball
    meteorite falls
    European Fireball Network
    Antonin
    Opis:
    The Antonin meteorite fell on July 15, 2021 in Wielkopolska Voivodeship. Its fall was recorded by fireball camera network and the meteorite specimen was recovered soon after, during a dedicated search expedition. Main mass of Antonin was provided for scientific research relatively quickly after recovery, thanks to which the studies of cosmogenic radionuclide concentrations were carried out in the g spectrometry laboratory at the National Center for Nuclear Research in Otwock/Świerk. The analyses revealed concentration of 7Be and the traces of the cosmogenic radionuclides of 48V and 51Cr, whose half-lives are in the range of 15–28 days, clearly confirming the relationship of the specimen with the observed fireball. The relatively high concentrations of 58Co, 56Co, 46Sc, 57Co and 54Mn (half-lives of several months) also confirm the recent fall of the specimen. Additionally, collected radionuclide data allow to estimate pre-atmospheric size of the meteoroid. Distribution of 60Co and 26Al indicates a meteoroid chunk with a radius of 20–25 cm. The result of 26Al measurement suggests that the investigated meteorite fragment comes from a rather shallow depth of this meteoroid. In addition, the original mass of the meteoroid from which the Antonin meteorite originated was estimated to be less than 100 kg, most likely 70 kg.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2023, 14; 192-199
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Suevit (impaktyt) w kolekcji meteorytów dr. Jacka Siemiątkowskiego
    Suevite in the Jacek Siemiątkowski Collection
    Autorzy:
    Krzesińska, Agata
    Powiązania:
    https://bibliotekanauki.pl/articles/1032723.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    impactite
    metastability
    meteorites
    shock metamorphism
    suevite
    Opis:
    Petrographic and microtextural analyses were done on the thin section of an impactite from the Jacek Siemiątkowski Collection of Meteorites (ING PAN OB Wrocław). Two types of textures, crystalline and glassy are distinguishable. In each of them, mineral and rock fragments are deformed in different way and to various degree. One can distinguish: biotite kink bands, irregularly fractured quartz grains, twins of feldspar crystals. Moreover there are visible textures such as planar deformation features in quartz and feldspar grains, diaplectic and polymineral – lechatelierytic glasses. All the observed textures may testify the origin of the rock. The slightly deformed fragments and strongly deformed ones developed during the compression phase of the crater formation at different distance from a projectile and the crater centre. This event was followed by excavation of deformed material and its redeposition in the crater filling. The rock was recrystallised afterwards, which is inferred from the presence of the decorated PDFs and subgrains in some dynamically recrystallised quartz grains.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2011, 2; 85-91
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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