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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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National Institute of Polar Research
1973-09-01
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| Series: | Antarctic Record |
| Online Access: | https://doi.org/10.15094/00007720 |
| _version_ | 1817983639702470656 |
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| author | Masako SHIMA Akihiko OKADA Makoto SHIMA |
| author_facet | Masako SHIMA Akihiko OKADA Makoto SHIMA |
| author_sort | Masako SHIMA |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-13T23:35:31Z |
| format | Article |
| id | doaj.art-772e6cf7017343b599ca18f831959da8 |
| institution | Directory Open Access Journal |
| issn | 0085-7289 2432-079X |
| language | English |
| last_indexed | 2024-04-13T23:35:31Z |
| publishDate | 1973-09-01 |
| publisher | National Institute of Polar Research |
| record_format | Article |
| series | Antarctic Record |
| spelling | doaj.art-772e6cf7017343b599ca18f831959da82022-12-22T02:24:46ZengNational Institute of Polar ResearchAntarctic Record0085-72892432-079X1973-09-0147869710.15094/00007720Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato MeteoritesMasako SHIMA0Akihiko OKADA1Makoto SHIMA2Max-Planck Institut fur Chemie The Institute of Physical and Chemical ResearchThe Institute of Physical and Chemical ResearchAntarctica 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.https://doi.org/10.15094/00007720 |
| spellingShingle | Masako SHIMA Akihiko OKADA Makoto SHIMA Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites Antarctic Record |
| title | 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_short | 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 |
| url | https://doi.org/10.15094/00007720 |
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