Characterization of Antarctic micrometeorites by thermoluminescence
Abstract— In order to explore the nature and history of micrometeorites, we have measured the thermoluminescence (TL) properties of four micrometeorites, three cosmic spherules, and one irregular scoriaceous particle, that we found in a survey of 17 micrometeorites. These micrometeorites have TL sen...
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crwiley:10.1111/j.1945-5100.2009.tb00761.x 2024-05-19T07:31:39+00:00 Characterization of Antarctic micrometeorites by thermoluminescence SEDAGHATPOUR, F. SEARS, D. W. G. 2009 http://dx.doi.org/10.1111/j.1945-5100.2009.tb00761.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2009.tb00761.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2009.tb00761.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Meteoritics & Planetary Science volume 44, issue 5, page 653-664 ISSN 1086-9379 1945-5100 Space and Planetary Science Geophysics journal-article 2009 crwiley https://doi.org/10.1111/j.1945-5100.2009.tb00761.x 2024-04-22T07:32:05Z Abstract— In order to explore the nature and history of micrometeorites, we have measured the thermoluminescence (TL) properties of four micrometeorites, three cosmic spherules, and one irregular scoriaceous particle, that we found in a survey of 17 micrometeorites. These micrometeorites have TL sensitivities ranging from 0.017 ± 0.002 to 0.087 ± 0.009 (on a scale normalized to 4 mg of the H3.9 chondrite Dhajala). The four micrometeorites have very similar TL peak temperatures and TL peak widths, and these distinguish them from CI, most CM, CV, CO, and ordinary chondrites. However, the TL properties of these micrometeorites closely resemble those of the unusual CM chondrite MacAlpine Hills (MAC) 87300 and terrestrial forsterites. Heating experiments on submillimeter chips of a CM chondrite and a H5 chondrite suggest that these TL properties are have not been significantly affected by atmospheric passage. Thus we suggest that there is no simple linkage between these micrometeorites and the established meteorite classes, and that forsterite is an important component of these micrometeorites, as it is in many primitive solar system materials. Article in Journal/Newspaper Antarc* Antarctic Wiley Online Library Meteoritics & Planetary Science 44 5 653 664 |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Space and Planetary Science Geophysics |
spellingShingle |
Space and Planetary Science Geophysics SEDAGHATPOUR, F. SEARS, D. W. G. Characterization of Antarctic micrometeorites by thermoluminescence |
topic_facet |
Space and Planetary Science Geophysics |
description |
Abstract— In order to explore the nature and history of micrometeorites, we have measured the thermoluminescence (TL) properties of four micrometeorites, three cosmic spherules, and one irregular scoriaceous particle, that we found in a survey of 17 micrometeorites. These micrometeorites have TL sensitivities ranging from 0.017 ± 0.002 to 0.087 ± 0.009 (on a scale normalized to 4 mg of the H3.9 chondrite Dhajala). The four micrometeorites have very similar TL peak temperatures and TL peak widths, and these distinguish them from CI, most CM, CV, CO, and ordinary chondrites. However, the TL properties of these micrometeorites closely resemble those of the unusual CM chondrite MacAlpine Hills (MAC) 87300 and terrestrial forsterites. Heating experiments on submillimeter chips of a CM chondrite and a H5 chondrite suggest that these TL properties are have not been significantly affected by atmospheric passage. Thus we suggest that there is no simple linkage between these micrometeorites and the established meteorite classes, and that forsterite is an important component of these micrometeorites, as it is in many primitive solar system materials. |
format |
Article in Journal/Newspaper |
author |
SEDAGHATPOUR, F. SEARS, D. W. G. |
author_facet |
SEDAGHATPOUR, F. SEARS, D. W. G. |
author_sort |
SEDAGHATPOUR, F. |
title |
Characterization of Antarctic micrometeorites by thermoluminescence |
title_short |
Characterization of Antarctic micrometeorites by thermoluminescence |
title_full |
Characterization of Antarctic micrometeorites by thermoluminescence |
title_fullStr |
Characterization of Antarctic micrometeorites by thermoluminescence |
title_full_unstemmed |
Characterization of Antarctic micrometeorites by thermoluminescence |
title_sort |
characterization of antarctic micrometeorites by thermoluminescence |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1945-5100.2009.tb00761.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2009.tb00761.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2009.tb00761.x |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Meteoritics & Planetary Science volume 44, issue 5, page 653-664 ISSN 1086-9379 1945-5100 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1945-5100.2009.tb00761.x |
container_title |
Meteoritics & Planetary Science |
container_volume |
44 |
container_issue |
5 |
container_start_page |
653 |
op_container_end_page |
664 |
_version_ |
1799469524184989696 |