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Note on rock-forming minerals (1) Chemical compositions of Ca-amplibole in the late Tertiary volcanic rocks from the joetsu district
http://hdl.handle.net/10513/193
http://hdl.handle.net/10513/193ba9d4bd8-d1e3-4f68-8564-f0a1b1fb2b7a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
kiyo22_2-28.pdf (559.5 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
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| 公開日 | 2009-05-22 | |||||||
| タイトル | ||||||||
| タイトル | Note on rock-forming minerals (1) Chemical compositions of Ca-amplibole in the late Tertiary volcanic rocks from the joetsu district | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | ca-amphibole | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | hornblende gabbro | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | magnesiohornblende | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Nanbayama | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | pargasite | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Yoneyama | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Umikawa | |||||||
| 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 | |||||||
| 著者 |
Oba, Takanobu
× Oba, Takanobu
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | The volcanic and intrusive rocks of the Umikawa, Nanbayama and Yoneyama in late Pliocene are distributed in the northern part of Fossa Magna region, Niigata Prefecture. In the Umikawa pyroclastics, pyroxene and olivine basalts are common, and andesite is accompanied in subordinate amount. The majority of volcanic rocks from the Yoneyama are mainly two-pyroxene andesite and olivine basalt with small amounts of hornblende, clinopyroxene-orthopyroxene. The Nanbayama intrusive massif is composed of the porphyrite and porphyry. In these volcanic and intrusive rocks, amphibole occurs as phenocryst with opacitized rims. Hornblende gabbroic inclusions occur in calc-alkali andesites of the Yoneyama and Umikawa. The amphiboles from the Yoneyama and Nanbayama are magnesiohornblende to pargasite, on the other hand, the amphibole in the Umikawa pyroclastics is pargasite. Amphiboles in the volcanic rocks in the present study are near the tremolite-pargasite join. When comparing the amphiboles from the three occurrences, K contents in amphibole from Umikawa pyroclastic rock are higher than those from the Nanbayama intrusive and Yoneyama volcanic rocks. K_2O contents of the bulk composition are the highest in the Yoneyama volcanic rocks. In this case, the amphibole is not affected with the bulk composition. | |||||||
| 書誌情報 |
上越教育大学研究紀要 巻 22, 号 2, p. 661-670, 発行日 2003-03 |
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| 出版者 | ||||||||
| 出版者 | 上越教育大学 | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0915-8162 | |||||||
| 論文ID（NAID） | ||||||||
| 関連タイプ | isIdenticalTo | |||||||
| 識別子タイプ | NAID | |||||||
| 関連識別子 | AN10284863 | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
