Evidence in a glassy cosmic spherule from Antarctica for grazing incidence encounters with the Earth's atmosphere
Abstract— Cosmic dust accreted by the Earth can be extensively reprocessed during atmospheric encounters. The textures and compositions of reprocessed material provide important constraints by which the processes affecting extraterrestrial matter in the Earth's atmosphere can be better understo...
Published in: | Meteoritics & Planetary Science |
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Language: | English |
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crwiley:10.1111/j.1945-5100.1996.tb02035.x 2023-12-03T10:12:47+01:00 Evidence in a glassy cosmic spherule from Antarctica for grazing incidence encounters with the Earth's atmosphere GENGE, Matthew J. GRADY, Monica M. HUTCHISON, Robert 1996 http://dx.doi.org/10.1111/j.1945-5100.1996.tb02035.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.1996.tb02035.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.1996.tb02035.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Meteoritics & Planetary Science volume 31, issue 5, page 627-632 ISSN 1086-9379 1945-5100 Space and Planetary Science Geophysics journal-article 1996 crwiley https://doi.org/10.1111/j.1945-5100.1996.tb02035.x 2023-11-09T14:17:40Z Abstract— Cosmic dust accreted by the Earth can be extensively reprocessed during atmospheric encounters. The textures and compositions of reprocessed material provide important constraints by which the processes affecting extraterrestrial matter in the Earth's atmosphere can be better understood. Here we report results on an unusual Antarctic glassy cosmic spherule that demonstrates strong textural evidence for at least two grazing incidence encounters with the Earth's atmosphere prior to final reentry. The particle consists of a central glassy core with four peripheral glass lobes that transect a silicate particle rim. The texture of the particle confirms previous theoretical speculations that some high velocity, low incidence angle interplanetary particles experience numerous encounters with the Earth's atmosphere and also indicates that micrometeorites demonstrating multiple melting episodes should be interpreted with caution. Article in Journal/Newspaper Antarc* Antarctic Antarctica Wiley Online Library (via Crossref) Antarctic Meteoritics & Planetary Science 31 5 627 632 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Space and Planetary Science Geophysics |
spellingShingle |
Space and Planetary Science Geophysics GENGE, Matthew J. GRADY, Monica M. HUTCHISON, Robert Evidence in a glassy cosmic spherule from Antarctica for grazing incidence encounters with the Earth's atmosphere |
topic_facet |
Space and Planetary Science Geophysics |
description |
Abstract— Cosmic dust accreted by the Earth can be extensively reprocessed during atmospheric encounters. The textures and compositions of reprocessed material provide important constraints by which the processes affecting extraterrestrial matter in the Earth's atmosphere can be better understood. Here we report results on an unusual Antarctic glassy cosmic spherule that demonstrates strong textural evidence for at least two grazing incidence encounters with the Earth's atmosphere prior to final reentry. The particle consists of a central glassy core with four peripheral glass lobes that transect a silicate particle rim. The texture of the particle confirms previous theoretical speculations that some high velocity, low incidence angle interplanetary particles experience numerous encounters with the Earth's atmosphere and also indicates that micrometeorites demonstrating multiple melting episodes should be interpreted with caution. |
format |
Article in Journal/Newspaper |
author |
GENGE, Matthew J. GRADY, Monica M. HUTCHISON, Robert |
author_facet |
GENGE, Matthew J. GRADY, Monica M. HUTCHISON, Robert |
author_sort |
GENGE, Matthew J. |
title |
Evidence in a glassy cosmic spherule from Antarctica for grazing incidence encounters with the Earth's atmosphere |
title_short |
Evidence in a glassy cosmic spherule from Antarctica for grazing incidence encounters with the Earth's atmosphere |
title_full |
Evidence in a glassy cosmic spherule from Antarctica for grazing incidence encounters with the Earth's atmosphere |
title_fullStr |
Evidence in a glassy cosmic spherule from Antarctica for grazing incidence encounters with the Earth's atmosphere |
title_full_unstemmed |
Evidence in a glassy cosmic spherule from Antarctica for grazing incidence encounters with the Earth's atmosphere |
title_sort |
evidence in a glassy cosmic spherule from antarctica for grazing incidence encounters with the earth's atmosphere |
publisher |
Wiley |
publishDate |
1996 |
url |
http://dx.doi.org/10.1111/j.1945-5100.1996.tb02035.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.1996.tb02035.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.1996.tb02035.x |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Meteoritics & Planetary Science volume 31, issue 5, page 627-632 ISSN 1086-9379 1945-5100 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1945-5100.1996.tb02035.x |
container_title |
Meteoritics & Planetary Science |
container_volume |
31 |
container_issue |
5 |
container_start_page |
627 |
op_container_end_page |
632 |
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1784259398166642688 |