2010 Fiscal Year Final Research Report
Depositional ratio and cycles in the Rasthof cap carbonate of Namibia
| Project/Area Number |
20606003
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
地球システム変動
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| Research Institution | Nagoya University of Arts |
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Principal Investigator |
TOJO Bunji Nagoya University of Arts, 人間発達学部, 講師 (50422704)
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| Co-Investigator(Renkei-kenkyūsha) |
SHINICHI Kawakami 岐阜大学, 教育学部, 教授 (80183036)
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| Project Period (FY) |
2008 – 2010
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| Keywords | スノーボールアース / 地質学 / 全球凍結 / 原生代後期 / キャップカーボネート |
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| Research Abstract |
Rock specimens of Rasthof formation which covers Neoprpterozoic glacial deposit in Namibia were continuously sampled. These show the cyclic fluctuation in the amount of the carbonate minerals along vertical direction. Measurements reveal that the content of iridium in the specimens fluctuates with the carbonate cycle. It is concluded that the depositional ratio of the Rasthof cap carbonate periodically changes with kind of minerals if the amount of iridium in the specimens reflect in the depositional ratio.
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