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Mesoarchaean acidic volcanic lakes: A critical ecological niche in early land colonisation
http://hdl.handle.net/10295/00005831
http://hdl.handle.net/10295/00005831e876b530-da09-4012-b92c-b2fe5feeaad1
名前 / ファイル | ライセンス | アクション |
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kokuA_2021_2 (6.0 MB)
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CC BY-NC-ND 4.0
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-11-25 | |||||
タイトル | ||||||
タイトル | Mesoarchaean acidic volcanic lakes: A critical ecological niche in early land colonisation | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Dominion Group | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Mesoarchaean | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Kaapvaal Craton | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | early life | |||||
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 | |||||
著者 |
Agangi, Andrea
× Agangi, Andrea× Hofmann, Axel× Ossa Ossa, Frantz× Paprika, Dóra× Bekker, Andrey |
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内容記述(抄録) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The antiquity of life in marine environments has been demonstrated, with examples of microfossils and stromatolites extending back to at least 3.5 billion years ago (Ga). In contrast, emerged land was likely a more challenging environment during the Archaean, and only sparse evidence of life in non-marine environments has so far been identified. Here we document the abundance of isotopically light carbon (with δ13C values from −46.6 to −31.3‰), diagnostic of a biogeochemical methane cycle or acetogenesis, in shale and sandstone deposited in ∼3 billion-years-old acidic volcanic lakes on the Kaapvaal Craton of southern Africa. A distinctive Al-rich mineral assemblage with abundant pyrophyllite in lacustrine sedimentary rocks bears similarity to modern volcanic rocks affected by circulation of hot acidic fluids. This is compounded with an enrichment of Ni, Mo, W, As and Cu in whole-rock analyses of sedimentary rocks, which is also observed in geothermal areas of modern volcanic environments. Analysis of early diagenetic pyrite in these sedimentary rocks indicates high nutrient level in the lake, which might reflect hydrothermal input with leaching of volcanic material. Despite the restricted and ephemeral nature of volcanic lakes, a highly productive and complex ecosystem established itself in this environment. Volcanic lakes during the Mesoarchaean thus served as an ecological niche for the development and diversification of microbial life on emerged continental landmasses. | |||||
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 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.epsl.2020.116725 | |||||
書誌情報 |
Earth and Planetary Science Letters 巻 556, 号 15, 発行日 2021 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0012-821X | |||||
出版者 | ||||||
出版者 | Elsevier | |||||
関連リンク | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.epsl.2020.116725 | |||||
著作権等 | ||||||
権利情報 | ©2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license |