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四国中央部黒瀬川帯美良布層の放散虫年代と二枚貝群集
https://tokushima-u.repo.nii.ac.jp/records/2012361
https://tokushima-u.repo.nii.ac.jp/records/20123610dbda993-2932-454a-8609-7676e1d8d09a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
nomsp_13_149.pdf (4.1 MB)
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| Item type | 文献 / Documents(1) | |||||||||||||||||
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| 公開日 | 2024-12-06 | |||||||||||||||||
| アクセス権 | ||||||||||||||||||
| アクセス権 | open access | |||||||||||||||||
| 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 | journal article | |||||||||||||||||
| 出版タイプ | ||||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | 四国中央部黒瀬川帯美良布層の放散虫年代と二枚貝群集 | |||||||||||||||||
| 言語 | ja | |||||||||||||||||
| タイトル別表記 | ||||||||||||||||||
| その他のタイトル | Radiolarian ages and bivalve fauna of the Birafu Formation, Central Shikoku. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 著者 |
香西, 武
× 香西, 武
× 石田, 啓祐× 近藤, 康生
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | Jurassic-Cretaceous sediments are widely distributed in the Inner and Outer zones of SW Japan. In the Outer Zone, the micro-and mega-fossil biostratigraphy of the Birafu Formation, one of the Jurassic-Cretaceous sediments, is investigated in detail. Based on the tectonic subdivision of East Shikoku, the Birafu Formation belongs to the Sakashu Belt (south Kurosegawa Belt) that is composed of the Permian accretionary complexes. On the contrary, the Nankai Group probably belongs to the Yoshigahira Belt of the post-Neocomian tectonic unit.\nThe Birafu Formation is lithostratigraphically subdivided into seven members. Radiolarians are abundantly found in nine horizons of the members A2, A3, B2 and C. In the type section, rich molluscan faunas are found in the Member B1. Ataxioceras kurisakense of early Kimmeridgian ammonite has been reported from the lower part of the Member A3. The type section is subdivided into three radiolarian assemblage zones (AZ), i.e. the Kilinora spiralis AZ (Oxfordian: Member A2), Loopus primitivus AZ (Tithonian: upper part of the Member A3), and the Pseudodictyomitra carpatica AZ (Berriasian - lower Valanginian: Members B2 and C) in ascending order. The Birafu Formation is at least attributed to the total time-range from Oxfordian to Berriasian.\nBivalves are found mainly in the Member B1 that is situated stratigraphically between the Loopus primitivus AZ (Tithonian) and Pseudodictyomitra carpatica AZ (Berriasian - lower Valanginian). Bivalves are subdivided into two groups. One is marine Late Jurassic to earliest Cretaceous, and the other is marine and non-marine Early Cretaceous. Early Cretaceous bivalves occur in the base of the Member B1. It suggests that the J/K boundary is located between the upper part of the Member A3 and the lowest part of the Member B1. Further suggestion is that the transition between Jurassic and Cretaceous bivalve-types took place in the Berriasian. It is important to clarify the bivalve evolution across the Jurassic - Cretaceous boundary. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | Birafu Formation | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | Kurosegawa Terrane | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | Bivalve | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | Radiolaria | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | stratigraphy | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | biostretigraphy | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | facies analysis | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | Jurassic | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | J/K boundary | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | Early Cretaceous | |||||||||||||||||
| 書誌情報 |
ja : 大阪微化石研究会誌, 特別号 巻 13, p. 149-165, 発行日 2004-12-01 |
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| 収録物ID | ||||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||||
| 収録物識別子 | 02870436 | |||||||||||||||||
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| 収録物識別子タイプ | NCID | |||||||||||||||||
| 収録物識別子 | AN10364962 | |||||||||||||||||
| 出版者 | ||||||||||||||||||
| 出版者 | 大阪微化石研究会 | |||||||||||||||||
| 言語 | ja | |||||||||||||||||
| EID | ||||||||||||||||||
| 識別子 | 117386 | |||||||||||||||||
| 識別子タイプ | URI | |||||||||||||||||
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| 言語 | jpn | |||||||||||||||||
