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Rb-Sr AND K-Ar WHOLE ROCK AGES OF THE PLUTONIC BODIES FROM THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA
https://doi.org/10.15094/00002616
https://doi.org/10.15094/00002616900b46cd-2615-4025-9b4a-17ddb997536e
名前 / ファイル | ライセンス | アクション |
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KJ00002368228 (1.3 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1990-09-01 | |||||
タイトル | ||||||
タイトル | Rb-Sr AND K-Ar WHOLE ROCK AGES OF THE PLUTONIC BODIES FROM THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00002616 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名よみ |
タカハシ, ユウヘイ
× タカハシ, ユウヘイ× アラカワ, ヨウジ× サキヤマ, トオル× オサナイ, ヤスヒト× マキモト, ヒロシ |
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著者名(英) |
TAKAHASHI, Yuhei
× TAKAHASHI, Yuhei× ARAKAWA, Yoji× SAKIYAMA, Tohru× OSANAI, Yasuhito× MAKIMOTO, Hiroshi |
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著者所属(英) | ||||||
en | ||||||
Geological Survey of Japan | ||||||
著者所属(英) | ||||||
en | ||||||
Institute of Geoscience, University of Tsukuba | ||||||
著者所属(英) | ||||||
en | ||||||
Faculty of Science, Hiroshima University:(Present address)Mitsui Mineral Development Engineering Co | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Earth Science and Astronomy, Fukuoka University of Education | ||||||
著者所属(英) | ||||||
en | ||||||
Geological Survey of Japan | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Rb-Sr whole rock isochron ages were determined on the two plutonic bodies from the Sør Rondane Mountains. Tonalite of the Nils Larsen Group (Nils Larsen Tonalite), being one of the representative older type intrusive rocks, gave an age of 956±39 Ma with an initial ^<87>Sr/^<86>Sr ratio of 0.7024. The other is the Lunckeryggen Granite, which is the most representative granite of younger type, gave an age of 525±32 Ma with an initial ^<87>Sr/^<86>Sr ratio of 0.7050. Two whole rock K-Ar ages on this granite were 406±20 and 415±21 Ma. It appears from the above that tonalitic magma has been intruded in Late Precambrian and that granitic magma in Early Paleozoic. Another thermal event occurred in Middle Paleozoic. Difference of initial Sr isotopic ratios between the Nils Larsen Tonalite and the Lunckeryggen Granite may reflect the crustal development in this area. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1072335X | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Geosciences 巻 4, p. 1-8, 発行日 1990-09 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |