Počet záznamů: 1  

Chemical and physical properties of Zd'ár nad Sazavou L chondrite and porosity differentiation using computed tomography

  1. 1.
    SYSNO ASEP0534148
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevChemical and physical properties of Zd'ár nad Sazavou L chondrite and porosity differentiation using computed tomography
    Tvůrce(i) Kalasová, D. (CZ)
    Zikmund, T. (CZ)
    Spurný, Pavel (ASU-R) ORCID, RID
    Haloda, J. (CZ)
    Borovička, Jiří (ASU-R) RID, ORCID
    Kaiser, J. (CZ)
    Zdroj.dok.Meteoritics & Planetary Science. - : Wiley - ISSN 1086-9379
    Roč. 55, č. 5 (2020), s. 1073-1081
    Poč.str.9 s.
    Forma vydáníOnline - E
    Jazyk dok.eng - angličtina
    Země vyd.US - Spojené státy americké
    Klíč. slovaquantitative-analysis ; meteorite ; metamorphism
    Vědní obor RIVBN - Astronomie a nebeská mechanika, astrofyzika
    Obor OECDAstronomy (including astrophysics,space science)
    Způsob publikováníOmezený přístup
    Institucionální podporaASU-R - RVO:67985815
    UT WOS000517778500001
    EID SCOPUS85080983038
    DOI10.1111/maps.13460
    AnotaceA very bright and long bolide was observed over the eastern part of the Czech Republic during late local evening on December 9, 2014. This bolide was recorded by professional instruments in the Czech part of the European Fireball Network. Three meteorites weighing in total 87 g were found in the predicted area and were named Žďár nad Sazavou. The complete material composition of the meteorite was obtained from one cut-off piece using petrography, mineralogy, and scanning electron microscopy (together with X-ray energy dispersive spectroscopy and wavelength dispersive spectroscopy). X-ray computed tomography (CT) was applied on all pieces for the determination of their grain and bulk density, digitization of shape, and examination of the structural homogeneity. CT has proved its important role for nondestructive exploration of brecciated meteorites formed by distinct lithologies or petrological types. In this article, we discuss its limits in terms of structural and material resolution based on the correlation of state-of-the-art CT data and SEM images. Furthermore, we introduce a new way of air cavity quantification, which distinguishes the natural porosity of meteorite and cracks related to erosion processes. This helps to discuss the presence of weathering products based on comparison of the meteorite pieces found at different times after impact.
    PracovištěAstronomický ústav
    KontaktRadka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326
    Rok sběru2021
    Elektronická adresahttps://doi.org/10.1111/maps.13460
Počet záznamů: 1  

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