Details
| Original language | English |
|---|---|
| Pages (from-to) | 1244-1250 |
| Number of pages | 7 |
| Journal | Meteoritics and Planetary Science |
| Volume | 52 |
| Issue number | 6 |
| Publication status | Published - 4 Jun 2017 |
Abstract
A piece of the 2013 Chelyabinsk meteorite was investigated for its content of anthropogenic radionuclides. In addition to traces of cesium-137 that had been previously reported for this particular fragment, we found an unusually high amount of strontium-90, which indicates that the source of this contamination was the Kyshtym accident (1957). A high Sr-90/Cs-137 activity ratio is characteristic for Kyshtym-derived contaminations. Based on the cesium-137 content in the soil from the finding site, it is estimated that the fragment was contaminated with soil particles in the milligram range upon impact. Investigation of the soil revealed very unusual ferromagnetic characteristics and an iron-rich chemical composition. Mössbauer spectroscopy indicated the presence of steel components in this soil, suggesting that the investigated meteorite fragment was found in an industrial dumping site rather than natural soil.
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
- Earth and Planetary Sciences(all)
- Space and Planetary Science
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In: Meteoritics and Planetary Science, Vol. 52, No. 6, 04.06.2017, p. 1244-1250.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - On the occurrence and origin of anthropogenic radionuclides found in a fragment of the Chelyabinsk (LL5) meteorite
AU - Querfeld, Rebecca
AU - Tanha, Mohammad R.
AU - Heyer, Lars
AU - Renz, Franz
AU - Guggenberger, Georg
AU - Brandstätter, Franz
AU - Ferrière, Ludovic
AU - Koeberl, Christian
AU - Steinhauser, Georg
N1 - We thank Michael Klatt for help with the SEM/EDX measurements. F.R. thanks the German Science Foundation for financial support (Re-1627/1-3). Harald Stehlik is acknowledged for helping with the acquisition of the Chelyabinsk meteorite stone and the soil sample used for this study.
PY - 2017/6/4
Y1 - 2017/6/4
N2 - A piece of the 2013 Chelyabinsk meteorite was investigated for its content of anthropogenic radionuclides. In addition to traces of cesium-137 that had been previously reported for this particular fragment, we found an unusually high amount of strontium-90, which indicates that the source of this contamination was the Kyshtym accident (1957). A high Sr-90/Cs-137 activity ratio is characteristic for Kyshtym-derived contaminations. Based on the cesium-137 content in the soil from the finding site, it is estimated that the fragment was contaminated with soil particles in the milligram range upon impact. Investigation of the soil revealed very unusual ferromagnetic characteristics and an iron-rich chemical composition. Mössbauer spectroscopy indicated the presence of steel components in this soil, suggesting that the investigated meteorite fragment was found in an industrial dumping site rather than natural soil.
AB - A piece of the 2013 Chelyabinsk meteorite was investigated for its content of anthropogenic radionuclides. In addition to traces of cesium-137 that had been previously reported for this particular fragment, we found an unusually high amount of strontium-90, which indicates that the source of this contamination was the Kyshtym accident (1957). A high Sr-90/Cs-137 activity ratio is characteristic for Kyshtym-derived contaminations. Based on the cesium-137 content in the soil from the finding site, it is estimated that the fragment was contaminated with soil particles in the milligram range upon impact. Investigation of the soil revealed very unusual ferromagnetic characteristics and an iron-rich chemical composition. Mössbauer spectroscopy indicated the presence of steel components in this soil, suggesting that the investigated meteorite fragment was found in an industrial dumping site rather than natural soil.
UR - http://www.scopus.com/inward/record.url?scp=85017166349&partnerID=8YFLogxK
U2 - 10.1111/maps.12855
DO - 10.1111/maps.12855
M3 - Article
AN - SCOPUS:85017166349
VL - 52
SP - 1244
EP - 1250
JO - Meteoritics and Planetary Science
JF - Meteoritics and Planetary Science
SN - 1086-9379
IS - 6
ER -