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Wyszukujesz frazę "Shock metamorphism" wg kryterium: Temat

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Identyfikacja kraterów uderzeniowych ze względu na rodzaj środowiska
    Identification of impact craters due to the environment
    Autorzy:
    Brachaniec, Tomasz
    Brom, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1033025.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    craters
    impact structures
    shock metamorphism
    Opis:
    It seems that the only correct way to identify impact craters is a combination of theoretical analysis, visual observation and experimental analysis, which are inextricably linked to the environment in which the crater was formed. Undoubtedly, the shock metamorphism is an essential diagnostic tool for the identification of the crater. The depth of water is a major problem in the formation of the marine craters.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2015, 6; 26-33
    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
    Tytuł:
    Mineralogy and petrology of two ordinary chondrites and their correlation with other meteorites
    Autorzy:
    Owocki, K.
    Pilski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086559.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Mineralogiczne
    Tematy:
    ordinary chondrite
    type 6 chondrite
    shock metamorphism
    Dhofar
    Opis:
    Two ordinary chondrites are compared and classified using transmitted and reflected light microscopy and electron microprobe analyses. Both meteorites were confiscated by the Polish Customs Service at the border with Belarus. The first meteorite (called in this paper Terespol-1) is a L/LL6 chondrite, its classification being supported by the equilibrated compositions of olivine and orthopyroxene and the presence of large recrystallized feldspars (< 150 μm). The specimen examined experienced weak shock metamorphism (S3) and moderate weathering (although metal in the inner part of the meteorite seems to be unaffected by oxidization). The other meteorite (called in this paper Terespol-2) is a LL6 chondrite which experienced weak shock metamorphism (S3) and is unaffected by weathering. The Terespol-2 meteorite shares its classification with the Dhofar 1401 chondrite but the lack of data prevents further correlation. Both meteorites have been correlated with known findings from the Meteoritical Bulletin database and an attempt is made to identify their place of origin (fall event). Results indicate that Terespol-1 is most closely related to the Dhofar 1316 chondrite and we suggest that both meteorites at least came from the same parent body.
    Źródło:
    Mineralogia; 2009, 40, 1/4; 107--116
    1899-8291
    1899-8526
    Pojawia się w:
    Mineralogia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mineralogy and petrology of two ordinary chondrites and their correlation with other meteorites
    Autorzy:
    Owocki, Krzysztof
    Pilski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2086510.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Mineralogiczne
    Tematy:
    ordinary chondrite
    type 6 chondrite
    shock metamorphism
    Dhofar
    Opis:
    Two ordinary chondrites are compared and classified using transmitted and reflected light microscopy and electron microprobe analyses. Both meteorites were confiscated by the Polish Customs Service at the border with Belarus. The first meteorite (called in this paper Terespol-1) is a L/LL6 chondrite, its classification being supported by the equilibrated compositions of olivine and orthopyroxene and the presence of large recrystallized feldspars (< 150 μm). The specimen examined experienced weak shock metamorphism (S3) and moderate weathering (although metal in the inner part of the meteorite seems to be unaffected by oxidization). The other meteorite (called in this paper Terespol-2) is a LL6 chondrite which experienced weak shock metamorphism (S3) and is unaffected by weathering. The Terespol-2 meteorite shares its classification with the Dhofar 1401 chondrite but the lack of data prevents further correlation. Both meteorites have been correlated with known findings from the Meteoritical Bulletin database and an attempt is made to identify their place of origin (fall event). Results indicate that Terespol-1 is most closely related to the Dhofar 1316 chondrite and we suggest that both meteorites at least came from the same parent body.
    Źródło:
    Mineralogia; 2009, 40, 1/4; 107--116
    1899-8291
    1899-8526
    Pojawia się w:
    Mineralogia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany szokowe w meteorytach żelaznych na przykładzie meteorytów Morasko i Jankowo Dolne
    Shock effects in iron meteorites – Morasko and Jankowo Dolne meteorites
    Autorzy:
    Jastrzębska, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/1032661.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    Jankowo Dolne meteorites
    Morasko
    Shock metamorphism
    iron meteorites
    meteorites
    Opis:
    Iron meteorites are the only ones to be linked with terrestrial impact craters. As studies show, over half of all iron meteorites shows signs of being shocked some time in their history to pressures over 130 kb. This paper is a short review of main shock metamorphism features in iron meteorites. Mechanisms leading to forming shock metamorphism features are described and examples of application of shock metamorphism studies are given.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2009, 1; 38-43
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Procesy wielokrotnego brekcjonowania deformacyjnego i powstawania stopów impaktowych w chondrytach na przykładzie meteorytów z kolekcji Jacka Siemiątkowskiego
    Evidence for multiple deformational brecciation and impact melting in chondrites from the Jacek Siemiątkowski collection
    Autorzy:
    Krzesińska, A.
    Siemiątkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074879.pdf
    Data publikacji:
    2011
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    brekcje meteorytowe
    chondryt NWA-869
    Ghubara
    Tsarev
    Zag
    brekcjonowanie
    stop impaktowy
    metamorfizm uderzeniowy
    meteoritic breccia
    NWA-869
    brecciation
    impact melt
    shock metamorphism
    Opis:
    Chondrites NWA-869 (L3.9-6 S2), Tsarev (L5 S5), Ghubara (L5 S4), Zag (H3-6 S3) from the Jacek Siemiatkowski Collection show evidence of multiple brecciation. Petrographic and microprobe analyses of thin sections allowed to identify and distinguish syn- and postaccretion impact and thermal transformations which took place on the chondrite parent bodies. The studied meteorites contain clasts of chemically equilibrated and unequilibrated rocks as well as many unusual achondritic-like clasts. The latter are cognate impact-melt rocks. All the clasts provide records of complex metamorphic and deformational histories of the parent bodies. Chondrites displayed numerous metamorphic transformations and deformations caused by many shock or shock-related processes under conditions ranging from impact-related shearing to HP shock-induced shattering and melting. These processes led to the formation of quenched impact melts, metal veins and nodules, darkened clasts and locally cataclasis.
    Źródło:
    Przegląd Geologiczny; 2011, 59, 8; 576-588
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Shock structures in the Morasko meteorite - preliminary SEM data
    Autorzy:
    Brachaniec, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/100872.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Śląski. Wydział Nauk o Ziemi
    Tematy:
    shock
    metamorphism
    Morasko meteorite
    dane SEM
    metamorfizm
    meteoryt Morasko
    Opis:
    This paper is a preliminary review of main shock deformations in the Morasko meteorite. Three main types of metamorphism structures occur in the investigated material: (i) brittle, (ii) plastic and (iii) thermal. Their interpretation may indicate, that Morasko meteorite reveals several stages of shock, eg.: extraterrestrial collisions and fall on the Earth.
    Źródło:
    Contemporary Trends in Geoscience; 2014, 3, 1; 1-4
    2299-8179
    Pojawia się w:
    Contemporary Trends in Geoscience
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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