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Sedimentological Study of the Ryukyu Group
http://hdl.handle.net/10097/28833
http://hdl.handle.net/10097/28833bf620361-5f7d-468b-908a-7a51eccf8b6c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00004211872.pdf (5.3 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2008-05-02 | |||||||
| タイトル | ||||||||
| タイトル | Sedimentological Study of the Ryukyu Group | |||||||
| 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 | |||||||
| 著者 |
Minoura, Koji
× Minoura, Koji
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | The sedimentology of the Pleistocene Ryukyu Group in the Ryukyu Islands, southwestern Japan, was investigated. The deposition of the Ryukyu Group, which is characterized by limestone of organic origin, is an important event in the Late Cenozoic history of the Ryukyu Islands. The limestone of the Ryukyu Group is classified into a coral, algal mat, an algal ball and a detrital facies. Definition of each facies is based on both field and laboratory studies. A model of deposition for the limestone is presented and statistically examined applying the Markov chain analysis. The depositional sequence of the Ryukyu Group is strongly Markovian. Special attention is given to the explanation of the mechanism of cyclic sedimentation, which must have caused the growth of such a Markovian-type sequence. In the course of mathematical treatment of the problem, subtracting the independent trials probability matrix leaves a residual matrix of positive probabilities that define the fully developed cyclothem. The fully developed cyclothem of the Itokina Formation can be expressed as conglomeratic sandstone; (fine-grained) sandstone and mudstone; calcareous (fine-grained) sandstone and mudstone; limestone; calcareous (fine-grained) sandstone and mudstone; (fine-grained) sandstone and mudstone; and conglomeratic sandstone. Dynamical analysis of limestone deposition in this fully developed cyclothem was carried out. Considering the geologic history of the Ryukyu Islands, It is concluded from the analyses that sudden subsidence and isolation of the Islands provided a favorable environment for the development of the limestone under warm water conditions. | |||||||
| 書誌情報 |
The science reports of the Tohoku University. Second series, Geology = 東北大学理科報告. 地質学 巻 49, 号 1, p. 1-69, 発行日 1979-03-31 |
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| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0082464X | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA00836349 | |||||||
| フォーマット | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | application/pdf | |||||||
| 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 | |||||||
| 出版者 | ||||||||
| 出版者 | Tohoku University | |||||||
| 資源タイプ | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 紀要類(bulletin) | |||||||
| 登録日 | ||||||||
| 日付 | 2008-05-02 | |||||||
| 日付タイプ | Created | |||||||
| 公開日（投稿完了日） | ||||||||
| 日付 | 2008-05-02 | |||||||
| 日付タイプ | Created | |||||||
| 発行日 | ||||||||
| 日付 | 1979-03-31 | |||||||
| 日付タイプ | Created | |||||||
| フォーマット | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 5294551 bytes | |||||||
| 更新日 | ||||||||
| 日付 | 2010-01-27 | |||||||
| 日付タイプ | Created | |||||||
