| Project/Area Number |
26400500
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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 | Joetsu University of Education |
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Principal Investigator |
Amano Kazutaka 上越教育大学, その他部局等, 副学長 (50159456)
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| Co-Investigator(Kenkyū-buntansha) |
ジェンキンズ ロバート 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 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 沈木群集 / 暁新世 / PETM / 深海 / 白亜紀末 / 大量絶滅 / 群集構造 / 同位体比 / 化学合成群集 / 古生態学 |
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| Outline of Final Research Achievements |
As a result of examination on fossils from the Paleocene Katsuhira Formation in Urahoro Town, Hokkaido, it has been elucidated that the fossils are corresponded to wood-fall communities which might live in 200 to 500 m of depth. In these communities, several end-Cretaceous survival taxa have been found. Although their species diversity is similar to those of the post-Eocene seep communities, some of them show higher than the latter. Comparing with the post-Eocene wood-fall communities, they has much more species for each localities than the post-Eocene ones. Moreover, the above end-Cretaceous survivors have not been recorded from the post-Eocene deposits in northern Pacific. From these, it can be stated that PETM caused big change of deep-sea wood-fall communities by the extinction of some dominant taxa such as aporrhaid gastropod and decreased their species diversity for each localities.
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