| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
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|
タイトル |
Rare earth element geochemistry of Lake Baikal sediment : Its implication for geochemical response to climate change during the Last Glacial/Interglacial Transition |
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言語 |
en |
| 作成者 |
Tanaka, Kazuya
Akagawa, Fuminori
Koshi, Yamamoto
Tani, Yukinori
Kawabe, Iwao
Kawai, Takayoshi
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| アクセス権 |
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|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
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|
権利情報 |
Copyright (c) 2007 Elsevier Ltd |
| 主題 |
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主題Scheme |
NDC |
|
主題 |
450 |
| 内容記述 |
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内容記述 |
Sediments deposited on the bottom of Lake Baikal have contributed to the understanding of a long-term environmental history of continents. Rare earth elements (REEs) along with major elements and loss on ignition (LOI) of Baikal sediments were determined with the aim of evaluating their suitability for a new paleoenvironmental proxy. Our interest is concentrated on paleoenvironmental change during the Last Glacial/Interglacial Transition (LGIT). Chondrite-normalized REE patterns for Baikal sediments show a similar variation to those for typical upper continental crustal materials. Three parameters of (La/Yb)n (n: chondrite-normalized value) ratio, ΣREE/TiO2 and Eu anomaly were used to express detailed characteristics of Baikal sediments. Depth profile of (La/Yb)n ratio shows abrupt change, whose timing corresponds to the beginning of climatic warming inferred from the profiles of SiO2/TiO2 and LOI. In addition, (La/Yb)n ratio, ΣREE/TiO2 and the degree of Eu anomaly correlate with each other. This suggests that inflow process of particulate materials into the lake may have changed during the Last Glacial/Interglacial Transition. The analytical results of this study lead to the conclusion that REE are a useful paleoenvironmental proxy in the Baikal region. |
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言語 |
en |
| 出版者 |
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|
出版者 |
Pergamon-Elsevier Science Ltd. |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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|
出版タイプ |
AO |
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出版タイプResource |
http://purl.org/coar/version/c_b1a7d7d4d402bcce |
| 関連情報 |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
10.1016/j.quascirev.2007.02.004 |
| 関連情報 |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
http://dx.doi.org/10.1016/j.quascirev.2007.02.004 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0277-3791 |
| 収録物識別子 |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA10627786 |
| 開始ページ |
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|
開始ページ |
1362 |
| 書誌情報 |
Quaternary Science Reviews
Quaternary Science Reviews
巻 26,
号 9-10,
p. 1362-1368,
発行日 2007-05
|
| 旧ID |
20655 |
QSR_26-9-10_1362.pdf (362.0 KB)
