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The Middle to Late Miocene “Carbonate Crash” in the Equatorial Indian Ocean
https://doi.org/10.24517/00067012
https://doi.org/10.24517/000670127264ac06-0792-4f93-8fba-c7790b33fe91
名前 / ファイル | ライセンス | アクション |
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SC-PR-USUI-Y-34-813.pdf (7.9 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-09-02 | |||||
タイトル | ||||||
タイトル | The Middle to Late Miocene “Carbonate Crash” in the Equatorial Indian Ocean | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
ID登録 | ||||||
ID登録 | 10.24517/00067012 | |||||
ID登録タイプ | JaLC | |||||
著者 |
Lübbers, Julia
× Lübbers, Julia× Kuhnt, Wolfgang× Holbourn, Ann E.× Bolton, Clara T.× Gray, Emmeline× Usui, Yoichi× Kochhann, Karlos G. D.× Beil, Sebastian× Andersen, Nils |
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著者別表示 |
臼井, 洋一
× 臼井, 洋一 |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学理工研究域地球社会基盤学系 | |||||
書誌情報 |
Paleoceanography and Paleoclimatology 巻 34, 号 5, p. 813-832, 発行日 2019-04-16 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2572-4525 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1029/2018PA003482 | |||||
出版者 | ||||||
出版者 | American Geophysical Union / Wiley | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We integrate benthic foraminiferal stable isotopes, X-ray fluorescence elemental ratios, and carbonate accumulation estimates in a continuous sedimentary archive recovered at International Ocean Discovery Program Site U1443 (Ninetyeast Ridge, Indian Ocean) to reconstruct changes in carbonate deposition and climate evolution over the interval 13.5 to 8.2 million years ago. Declining carbonate percentages together with a marked decrease in carbonate accumulation rates after ~13.2 Ma signal the onset of a prolonged episode of reduced carbonate deposition. This extended phase, which lasted until ~8.7 Ma, coincides with the middle to late Miocene carbonate crash, originally identified in the eastern equatorial Pacific Ocean and the Caribbean Sea. Interocean comparison reveals that intense carbonate impoverishment at Site U1443 (~11.5 to ~10 Ma) coincides with prolonged episodes of reduced carbonate deposition in all major tropical ocean basins. This implies that global changes in the intensity of chemical weathering and riverine input of calcium and carbonate ions into the ocean reservoir were instrumental in driving the carbonate crash. An increase in U1443 Log (Ba/Ti) together with a change in sediment color from red to green indicate a rise in organic export flux to the sea floor after ~11.2 Ma, which predates the global onset of the biogenic bloom. This early rise in export flux from biological production may have been linked to increased advection of nutrients and intensification of upper ocean mixing, associated with changes in the seasonality and intensity of the Indian Monsoon. ©2019. American Geophysical Union. All Rights Reserved. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Embargo Period 6 months | |||||
権利 | ||||||
権利情報 | Copyright ©2019. American Geophysical Union | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018PA003482 | |||||
関連名称 | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018PA003482 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://agupubs.onlinelibrary.wiley.com/journal/25724525 | |||||
関連名称 | https://agupubs.onlinelibrary.wiley.com/journal/25724525 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://sites.agu.org/ | |||||
関連名称 | http://sites.agu.org/ | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.wiley.com/en-gb | |||||
関連名称 | https://www.wiley.com/en-gb |