Microstructure and elemental composition of the Tagish Lake meteorite and its astrobiological implications
Abstract Tagish Lake meteorite, which fell in January 2000 in Canada, has provided a sample of pristine cosmic materials for laboratory studies. It is made up of loosely formed aggregates, making it one of the most friable carbonaceous chondrites. Its complex structure is composed of plaquettes of c...
Published in: | International Journal of Astrobiology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2009
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s1473550409990322 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1473550409990322 |
id |
crcambridgeupr:10.1017/s1473550409990322 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s1473550409990322 2023-05-15T18:30:04+02:00 Microstructure and elemental composition of the Tagish Lake meteorite and its astrobiological implications Rauf, Kani Hann, Anthony Wickramasinghe, Chandra 2009 http://dx.doi.org/10.1017/s1473550409990322 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1473550409990322 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms International Journal of Astrobiology volume 9, issue 1, page 35-43 ISSN 1473-5504 1475-3006 Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Physics and Astronomy (miscellaneous) Ecology, Evolution, Behavior and Systematics journal-article 2009 crcambridgeupr https://doi.org/10.1017/s1473550409990322 2023-02-24T07:13:15Z Abstract Tagish Lake meteorite, which fell in January 2000 in Canada, has provided a sample of pristine cosmic materials for laboratory studies. It is made up of loosely formed aggregates, making it one of the most friable carbonaceous chondrites. Its complex structure is composed of plaquettes of crystalized minerals, hexagon-shaped metals, chondrules and granules, all of which are embedded in a matrix of fine grains and fibril-like materials. Those components with sizes larger than 250 nm in diameter are affected to varying degrees by hydrothermal reactions, whereas the majority of smaller bodies (<350 nm in diameter) appear unscathed despite severe aqueous alterations on the parent body. A high population of granules (100–300 nm in diameter) consist of a wall (20–40 nm in thickness) and a larger core; the former is rich in organic elements, such as carbon, oxygen and sulfur, and the core contains Ni-Fe-Mg rich silicates. The organic matter has aromatic and aliphatic characteristics, and such evidence suggests that the granules may be the carriers of large organic species with distinct astrobiological implications. Article in Journal/Newspaper Tagish Cambridge University Press (via Crossref) Canada Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) International Journal of Astrobiology 9 1 35 43 |
institution |
Open Polar |
collection |
Cambridge University Press (via Crossref) |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Physics and Astronomy (miscellaneous) Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Physics and Astronomy (miscellaneous) Ecology, Evolution, Behavior and Systematics Rauf, Kani Hann, Anthony Wickramasinghe, Chandra Microstructure and elemental composition of the Tagish Lake meteorite and its astrobiological implications |
topic_facet |
Earth and Planetary Sciences (miscellaneous) Space and Planetary Science Physics and Astronomy (miscellaneous) Ecology, Evolution, Behavior and Systematics |
description |
Abstract Tagish Lake meteorite, which fell in January 2000 in Canada, has provided a sample of pristine cosmic materials for laboratory studies. It is made up of loosely formed aggregates, making it one of the most friable carbonaceous chondrites. Its complex structure is composed of plaquettes of crystalized minerals, hexagon-shaped metals, chondrules and granules, all of which are embedded in a matrix of fine grains and fibril-like materials. Those components with sizes larger than 250 nm in diameter are affected to varying degrees by hydrothermal reactions, whereas the majority of smaller bodies (<350 nm in diameter) appear unscathed despite severe aqueous alterations on the parent body. A high population of granules (100–300 nm in diameter) consist of a wall (20–40 nm in thickness) and a larger core; the former is rich in organic elements, such as carbon, oxygen and sulfur, and the core contains Ni-Fe-Mg rich silicates. The organic matter has aromatic and aliphatic characteristics, and such evidence suggests that the granules may be the carriers of large organic species with distinct astrobiological implications. |
format |
Article in Journal/Newspaper |
author |
Rauf, Kani Hann, Anthony Wickramasinghe, Chandra |
author_facet |
Rauf, Kani Hann, Anthony Wickramasinghe, Chandra |
author_sort |
Rauf, Kani |
title |
Microstructure and elemental composition of the Tagish Lake meteorite and its astrobiological implications |
title_short |
Microstructure and elemental composition of the Tagish Lake meteorite and its astrobiological implications |
title_full |
Microstructure and elemental composition of the Tagish Lake meteorite and its astrobiological implications |
title_fullStr |
Microstructure and elemental composition of the Tagish Lake meteorite and its astrobiological implications |
title_full_unstemmed |
Microstructure and elemental composition of the Tagish Lake meteorite and its astrobiological implications |
title_sort |
microstructure and elemental composition of the tagish lake meteorite and its astrobiological implications |
publisher |
Cambridge University Press (CUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1017/s1473550409990322 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1473550409990322 |
long_lat |
ENVELOPE(-134.272,-134.272,60.313,60.313) ENVELOPE(-134.233,-134.233,59.717,59.717) |
geographic |
Canada Tagish Tagish Lake |
geographic_facet |
Canada Tagish Tagish Lake |
genre |
Tagish |
genre_facet |
Tagish |
op_source |
International Journal of Astrobiology volume 9, issue 1, page 35-43 ISSN 1473-5504 1475-3006 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s1473550409990322 |
container_title |
International Journal of Astrobiology |
container_volume |
9 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
43 |
_version_ |
1766213542789251072 |