| Project/Area Number |
26610168
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | Kanazawa University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
JENKYNS Robert 金沢大学, 自然システム学系, 助教 (10451824)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 古水温 / ノジュール / 酸素同位体比 / 古環境 / 化石 / 生態系 / メタン / 鯨骨群集 / 炭素同位体比 / 硫黄同位体比 / 石灰質ノジュール / 竜骨 |
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| Outline of Final Research Achievements |
Stable isotope analyses of carbonate carbon and oxygen, and carbonate-associated sulfate on reptile-bone nodules indicated that the reptile corpse had been surrounded by oxic water but it became anoxic because of the organic decomposition resulting calcareous nodule formation. The stable isotope results also showed progressive process of nodule formation. Interpretation of the isotope data and visual observation of the nodule demonstrated that the calcium carbonate precipitated closest to bone (calcium carbonate attached on the bone in vacant space inside of a bone) is most recommended material for paleothermometry.
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