| Project/Area Number |
23540544
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
OGIHARA Shigenori 東京大学, 理学(系)研究科(研究院), 助教 (50214044)
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| Co-Investigator(Renkei-kenkyūsha) |
SHIGETA Yasunari 国立科学博物館, 地学研究部, 研究主幹 (30270408)
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | イノセラムス / 化学合成生物群集 / バイオマーカー / 個別炭素同位体 / 炭酸塩ノジュール / 化学合成 / 硫黄同位体組成 / 炭酸塩炭素同位体組成 / メタン酸化古細菌 / 硫酸還元菌 / 脂肪酸組成 / 化学合成群集 / バイオマーカー分析 / 炭酸塩炭素同位体 / アラゴナイト殻 |
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| Outline of Final Research Achievements |
The result of biomarker analysis has distribution of n-alkane was from n-C13 to n-C21, bimodal peak in n-C16 and n-C17, and CPI (C13-21) value indicated the price of 0.79. The distribution of n-alkane is characteristic in the Inoceramus samples from Teshio Nakagawa Tanno-sawa which preservation was good. Individual carbon isotope compositions of each n-alkane were not felled below -30 per mill. The results of biomarker analysis of other Inoceramus samples consisted of the mixture of low carbon numbered (n-C13 to n-C21) alkane and n-C29 and n-C31 alkane. PMI and crocetane, were not detected. The fatty acid composition was characterized by excel C16 fatty acid and its carbon isotope composition higher than-30 per mill. Perylene was a dominant compound in the PAH fraction extracted from Inoceramus samples. Thus the special biomarker which determines chemosynthetic community was not detected, but a possibility was indicated focusing on a result of the biomarker analysis.
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