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花崗岩中のカリ長石および黒雲母の微生物風化
- フォーマット:
- 論文
- 責任表示:
- 上島, 雅人 ; 田崎, 和江
- 言語:
- 日本語
- 出版情報:
- 日本粘土学会 = The Clay Science Society of Japan, 1998-12-28
- 著者名:
- 掲載情報:
- 粘土科学 = Journal of the Clay Science Society of Japan (in Japanese)
- ISSN:
- 0470-6455
- 巻:
- 38
- 通号:
- 2
- 開始ページ:
- 68
- 終了ページ:
- 82
- バージョン:
- publisher
- 概要:
- Microorganisms are influential in environmental earth materials. Elemental circulation, environmental changes and the Earth evolution have been associated with microorganisms. In this study, biomineralization of clay minerals and biodegradation of K-feldspar and biotite in granite were identified by XRD, optical microscope, SEM-EDX, TEM and atomic absorption. Bioweathering experiments were carried out using thin section of granite in freshwater with … iron bacteria (Toxothrix and Gallionella) at Omma Formation, Ishikawa Pref., Japan. Microbial mats were formed on the surface of the thin section after 3 and 10 days. Cavities and chaps with bacilli and filamentous bacteria were observed on the surface of feldspars and biotite. Si content was reduced at flake materials (Si:Al=3:2) with bacilli on the surface of K-feldspar. K and Si release was recognized in the solution of both K-feldspar and biotite immersed in the freshwater after a 2 months aging. TEM observation and electron diffraction analyses revealed that kaolinite formed on the surface of K-feldspar immersed in the freshwater after 2 months, suggesting K and Si were released from K-feldspar by bacteria to form kaolinite. The results suggest that the weathering of granite were accelerated by microorganisms to offer the nutrients such as K-ion. 続きを見る
- URL:
- http://hdl.handle.net/2297/35714
類似資料:
日本粘土学会 = The Clay Science Society of Japan |
地学団体研究会 The Association for the Geological Collaboration in Japan |
地学団体研究会 The Association for the Geological Collaboration in Japan |
[田崎和江] |
日本粘土学会 = The Clay Science Society of Japan |
金沢大学自然科学研究科 |
地学団体研究会 The Association for the Geological Collaboration in Japan |
日本地質学会 |
日本粘土学会 = The Clay Science Society of Japan |
地学団体研究会 The Association for the Geological Collaboration in Japan (AGCJ) |
|
日本粘土学会 The Clay Science Society of Japan |