Scanning electron microscopical and cross-sectional analysis of extraterrestrial carbonaceous nanoglobules
Carbonaceous nanoglobules are ubiquitous in carbonaceous chondrite (CC) meteorites. The Tagish Lake (C2) meteorite is particularly intriguing in containing an abundance of nanoglobules, with a wider range of forms and sizes than encountered in other CC meteorites. Previous studies by transmission el...
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ftunivarizonaojs:oai:journals.uair.arizona.edu:article/15589 2023-05-15T18:30:05+02:00 Scanning electron microscopical and cross-sectional analysis of extraterrestrial carbonaceous nanoglobules GARVIE, Laurence A. J. BAUMGARDNER, Grant BUSECK, Peter R. 2008-01-01 application/pdf https://journals.uair.arizona.edu/index.php/maps/article/view/15589 eng eng Meteoritics & Planetary Science Archives https://journals.uair.arizona.edu/index.php/maps/article/view/15589/15577 https://journals.uair.arizona.edu/index.php/maps/article/view/15589 Meteoritics & Planetary Science Archives; Vol 43, No 5 (2008); 899-903 1945-5100 1086-9379 Carbon;Scanning electron microscopy (SEM);Macromolecular material;carbonaceous chondrite Meteorites info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2008 ftunivarizonaojs 2020-11-14T17:53:01Z Carbonaceous nanoglobules are ubiquitous in carbonaceous chondrite (CC) meteorites. The Tagish Lake (C2) meteorite is particularly intriguing in containing an abundance of nanoglobules, with a wider range of forms and sizes than encountered in other CC meteorites. Previous studies by transmission electron microscopy (TEM) have provided a wealth of information on chemistry and structure. In this study, low-voltage scanning electron microscopy (SEM) was used to characterize the globule forms and external structures. The internal structure of the globules was investigated after sectioning by focused ion beam (FIB) milling. The FIB-SEM analysis shows that the globules range from solid to hollow. Some hollow globules show a central open core, with adjoining smaller cores. The FIB with an SEM is a valuable tool for the analysis of extraterrestrial materials, even of sub-micron "soft" carbonaceous particles. The rapid site-specific cross-sectioning capabilities of the FIB allow the preservation of the internal morphology of the nanoglobules, with minimal damage or alteration of the unsectioned areas. Article in Journal/Newspaper Tagish Journals at the University of Arizona Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) |
institution |
Open Polar |
collection |
Journals at the University of Arizona |
op_collection_id |
ftunivarizonaojs |
language |
English |
topic |
Carbon;Scanning electron microscopy (SEM);Macromolecular material;carbonaceous chondrite Meteorites |
spellingShingle |
Carbon;Scanning electron microscopy (SEM);Macromolecular material;carbonaceous chondrite Meteorites GARVIE, Laurence A. J. BAUMGARDNER, Grant BUSECK, Peter R. Scanning electron microscopical and cross-sectional analysis of extraterrestrial carbonaceous nanoglobules |
topic_facet |
Carbon;Scanning electron microscopy (SEM);Macromolecular material;carbonaceous chondrite Meteorites |
description |
Carbonaceous nanoglobules are ubiquitous in carbonaceous chondrite (CC) meteorites. The Tagish Lake (C2) meteorite is particularly intriguing in containing an abundance of nanoglobules, with a wider range of forms and sizes than encountered in other CC meteorites. Previous studies by transmission electron microscopy (TEM) have provided a wealth of information on chemistry and structure. In this study, low-voltage scanning electron microscopy (SEM) was used to characterize the globule forms and external structures. The internal structure of the globules was investigated after sectioning by focused ion beam (FIB) milling. The FIB-SEM analysis shows that the globules range from solid to hollow. Some hollow globules show a central open core, with adjoining smaller cores. The FIB with an SEM is a valuable tool for the analysis of extraterrestrial materials, even of sub-micron "soft" carbonaceous particles. The rapid site-specific cross-sectioning capabilities of the FIB allow the preservation of the internal morphology of the nanoglobules, with minimal damage or alteration of the unsectioned areas. |
format |
Article in Journal/Newspaper |
author |
GARVIE, Laurence A. J. BAUMGARDNER, Grant BUSECK, Peter R. |
author_facet |
GARVIE, Laurence A. J. BAUMGARDNER, Grant BUSECK, Peter R. |
author_sort |
GARVIE, Laurence A. J. |
title |
Scanning electron microscopical and cross-sectional analysis of extraterrestrial carbonaceous nanoglobules |
title_short |
Scanning electron microscopical and cross-sectional analysis of extraterrestrial carbonaceous nanoglobules |
title_full |
Scanning electron microscopical and cross-sectional analysis of extraterrestrial carbonaceous nanoglobules |
title_fullStr |
Scanning electron microscopical and cross-sectional analysis of extraterrestrial carbonaceous nanoglobules |
title_full_unstemmed |
Scanning electron microscopical and cross-sectional analysis of extraterrestrial carbonaceous nanoglobules |
title_sort |
scanning electron microscopical and cross-sectional analysis of extraterrestrial carbonaceous nanoglobules |
publisher |
Meteoritics & Planetary Science Archives |
publishDate |
2008 |
url |
https://journals.uair.arizona.edu/index.php/maps/article/view/15589 |
long_lat |
ENVELOPE(-134.272,-134.272,60.313,60.313) ENVELOPE(-134.233,-134.233,59.717,59.717) |
geographic |
Tagish Tagish Lake |
geographic_facet |
Tagish Tagish Lake |
genre |
Tagish |
genre_facet |
Tagish |
op_source |
Meteoritics & Planetary Science Archives; Vol 43, No 5 (2008); 899-903 1945-5100 1086-9379 |
op_relation |
https://journals.uair.arizona.edu/index.php/maps/article/view/15589/15577 https://journals.uair.arizona.edu/index.php/maps/article/view/15589 |
_version_ |
1766213565641916416 |