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KALASOVÁ, D. ZIKMUND, T. SPURNÝ, P. HALODA, J. BOROVIČKA, J. KAISER, J.
Original Title
Chemical and physical properties of Zd'ar nad Sazavou L chondrite and porosity differentiation using computed tomography
Type
journal article in Web of Science
Language
English
Original Abstract
A 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 Z & x10f;ar 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.
Keywords
QUANTITATIVE-ANALYSIS; METEORITE; METAMORPHISM; DENSITY; FALLS; SIZE
Authors
KALASOVÁ, D.; ZIKMUND, T.; SPURNÝ, P.; HALODA, J.; BOROVIČKA, J.; KAISER, J.
Released
1. 5. 2020
Publisher
WILEY
Location
HOBOKEN
ISBN
1945-5100
Periodical
METEORITICS & PLANETARY SCIENCE
Year of study
55
Number
5
State
United States of America
Pages from
1073
Pages to
1081
Pages count
9
URL
https://onlinelibrary.wiley.com/doi/full/10.1111/maps.13460
BibTex
@article{BUT165489, author="Dominika {Kalasová} and Tomáš {Zikmund} and Pavel {Spurný} and Jakub {Haloda} and Jiří {Borovička} and Jozef {Kaiser}", title="Chemical and physical properties of Zd'ar nad Sazavou L chondrite and porosity differentiation using computed tomography", journal="METEORITICS & PLANETARY SCIENCE", year="2020", volume="55", number="5", pages="1073--1081", doi="10.1111/maps.13460", issn="1945-5100", url="https://onlinelibrary.wiley.com/doi/full/10.1111/maps.13460" }