Detail publikace

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

KALASOVÁ, D. ZIKMUND, T. SPURNÝ, P. HALODA, J. BOROVIČKA, J. KAISER, J.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

QUANTITATIVE-ANALYSIS; METEORITE; METAMORPHISM; DENSITY; FALLS; SIZE

Autoři

KALASOVÁ, D.; ZIKMUND, T.; SPURNÝ, P.; HALODA, J.; BOROVIČKA, J.; KAISER, J.

Vydáno

1. 5. 2020

Nakladatel

WILEY

Místo

HOBOKEN

ISSN

1945-5100

Periodikum

METEORITICS & PLANETARY SCIENCE

Ročník

55

Číslo

5

Stát

Spojené státy americké

Strany od

1073

Strany do

1081

Strany počet

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"
}