Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites
Antarctica is thought to be the most suitable place for searching extraterrestrial materials. Since 1965, we have been studying microtektite and cosmic dust in Antarctica. In 1969, the Japanese Expedition Team collected stony meteorites and brought them back to Japan. Scientific study of these sampl...
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National Institute of Polar Research
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ftdoajarticles:oai:doaj.org/article:772e6cf7017343b599ca18f831959da8 2023-05-15T13:39:32+02:00 Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites Masako SHIMA Akihiko OKADA Makoto SHIMA 1973-09-01T00:00:00Z https://doi.org/10.15094/00007720 https://doaj.org/article/772e6cf7017343b599ca18f831959da8 EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00007720 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007720 0085-7289 2432-079X https://doaj.org/article/772e6cf7017343b599ca18f831959da8 Antarctic Record, Iss 47, Pp 86-97 (1973) Geography (General) G1-922 article 1973 ftdoajarticles https://doi.org/10.15094/00007720 2022-12-30T23:27:56Z Antarctica is thought to be the most suitable place for searching extraterrestrial materials. Since 1965, we have been studying microtektite and cosmic dust in Antarctica. In 1969, the Japanese Expedition Team collected stony meteorites and brought them back to Japan. Scientific study of these samples has just been started. A part of the samples was examined for mineral composition, and was also analyzed for chemical composition by means of wet chemistry. At the same time, examination of rare gas was carried out with a gas mass-spectrometer. The purpose of the study is to know whether these meteorites are extraterrestrial materials or not. As a result, they were found to be chondrites, which are classified into enstatite chondrite, achondrite, carbonaceous chondrite and bronzite chondrite. For the samples we proposed the name Yamato (a), Yamato (b), Yamato (c) and Yamato (d), following Huss method. They were found on the glacier near the Yamato Mountains (70°S, 37°E) within a small area (about lOxlOkm^2). It is a quite interesting phenomena that different kinds of chondrites are found within a narrow area. This may indicate one shower of meteorites. Also, it is different kinds of chondrites fell at different times in a small area. Or the meteorites, which had fallen over a wide region, have been carried to this narrow area by the glacier movement. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Yamato ENVELOPE(35.583,35.583,-71.417,-71.417) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Masako SHIMA Akihiko OKADA Makoto SHIMA Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites |
topic_facet |
Geography (General) G1-922 |
description |
Antarctica is thought to be the most suitable place for searching extraterrestrial materials. Since 1965, we have been studying microtektite and cosmic dust in Antarctica. In 1969, the Japanese Expedition Team collected stony meteorites and brought them back to Japan. Scientific study of these samples has just been started. A part of the samples was examined for mineral composition, and was also analyzed for chemical composition by means of wet chemistry. At the same time, examination of rare gas was carried out with a gas mass-spectrometer. The purpose of the study is to know whether these meteorites are extraterrestrial materials or not. As a result, they were found to be chondrites, which are classified into enstatite chondrite, achondrite, carbonaceous chondrite and bronzite chondrite. For the samples we proposed the name Yamato (a), Yamato (b), Yamato (c) and Yamato (d), following Huss method. They were found on the glacier near the Yamato Mountains (70°S, 37°E) within a small area (about lOxlOkm^2). It is a quite interesting phenomena that different kinds of chondrites are found within a narrow area. This may indicate one shower of meteorites. Also, it is different kinds of chondrites fell at different times in a small area. Or the meteorites, which had fallen over a wide region, have been carried to this narrow area by the glacier movement. |
format |
Article in Journal/Newspaper |
author |
Masako SHIMA Akihiko OKADA Makoto SHIMA |
author_facet |
Masako SHIMA Akihiko OKADA Makoto SHIMA |
author_sort |
Masako SHIMA |
title |
Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites |
title_short |
Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites |
title_full |
Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites |
title_fullStr |
Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites |
title_full_unstemmed |
Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites |
title_sort |
study of the extraterrestrial materials at antarctica, iii : on the yamato meteorites |
publisher |
National Institute of Polar Research |
publishDate |
1973 |
url |
https://doi.org/10.15094/00007720 https://doaj.org/article/772e6cf7017343b599ca18f831959da8 |
long_lat |
ENVELOPE(35.583,35.583,-71.417,-71.417) |
geographic |
Yamato |
geographic_facet |
Yamato |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Antarctic Record, Iss 47, Pp 86-97 (1973) |
op_relation |
https://doi.org/10.15094/00007720 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007720 0085-7289 2432-079X https://doaj.org/article/772e6cf7017343b599ca18f831959da8 |
op_doi |
https://doi.org/10.15094/00007720 |
_version_ |
1766120002688122880 |