Quantatitative evaluation of chemical weathering effect and development of paleoclimate index
| Project/Area Number |
22740332
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Geology
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| Research Institution | Waseda University |
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Principal Investigator |
OHTA Tohru 早稲田大学, 教育・総合科学学術院, 准教授 (40409610)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 風化作用 / 土壌組成 / 古気候解析 / 風化指標 / 化学組成 / 土壌 / 古土壌 / 気候判別 / 古気候 |
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| Research Abstract |
The present study aims to unravel the relationship between geochemical changes during soil formation and relevant climatic conditions that induce geochemical modification. As a result, newly invented geochemical index successfully discriminated soils developed on boreal, boreal humid, steppe, temperate humid, arid, semi-arid and tropical rainforest climates. This eochemical index could be applied to paleosols to evaluate climatic condisions of the past. Applications to the Cretaceous strat in Hokkaido and Northern China revaled that geochemical paleoweathering W index are concordant with paleoclimatic changes, and verified that the W index would serve as a new paleoclimate proxy.
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Report
(4 results)
Research Products
(27 results)
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[Journal Article] Early Cretaceous terrestrial weathering in Northern China : relationship between paleoclimate change and the phased evolution of the Jehol Biota2011
Author(s)
Ohta, T., Li G., Hirano, H., Sakai, T., Kozai, T., Yoshikawa, T. and Kaneko, A.
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Journal Title
Journal of Geology
Volume: 119
Issue: 1
Pages: 81-96
DOI
Related Report
Peer Reviewed
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