DOI: 10.1016/j.epsl.2018.02.022
Scopus记录号: 2-s2.0-85042681257
论文题名: Decoupling of Neoarchean sulfur sources recorded in Algoma-type banded iron formation
作者: Diekrup D. ; Hannington M.D. ; Strauss H. ; Ginley S.J.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 489 起始页码: 1
结束页码: 7
语种: 英语
英文关键词: banded iron formation
; hydrothermal
; marine paleoenvironment
; multiple sulfur isotopes
; Neoarchean
; sulfur disproportionation
Scopus关键词: Atmospheric chemistry
; Bacteria
; Hot springs
; Hydrothermal synthesis
; Isotopes
; Lithology
; Sulfur compounds
; Volcanoes
; Banded iron formations
; Disproportionations
; hydrothermal
; Multiple sulfur isotopes
; Neoarchean
; Paleo-environment
; Economic geology
; Archean
; banded iron formation
; chromium
; isotopic analysis
; organic matter
; paleoenvironment
; sulfur cycle
; sulfur isotope
; Bacteria (microorganisms)
英文摘要: Neoarchean Algoma-type banded iron formations (BIFs) are widely viewed as direct chemical precipitates from proximal volcanic–hydrothermal vents. However, a systematic multiple sulfur isotope study of oxide-facies BIF from a type locality in the ca. 2.74 Ga Temagami greenstone belt reveals mainly bacterial turnover of atmospheric elemental sulfur in the host basin rather than deposition of hydrothermally cycled seawater sulfate or sulfur from direct volcanic input. Trace amounts of chromium reducible sulfur that were extracted for quadruple sulfur isotope (32S–33S–34S–36S) analysis record the previously known mass-independent fractionation of volcanic SO2 in the Archean atmosphere (S-MIF) and biological sulfur cycling but only minor contributions from juvenile sulfur, despite the proximity of volcanic sources. We show that the dominant bacterial metabolisms were iron reduction and sulfur disproportionation, and not sulfate reduction, consistent with limited availability of organic matter and the abundant ferric iron deposited as Fe(OH)3. That sulfur contained in the BIF was not a direct volcanic–hydrothermal input, as expected, changes the view of an important archive of the Neoarchean sulfur cycle in which the available sulfur pools were strongly decoupled and only species produced photochemically under anoxic atmospheric conditions were deposited in the BIF-forming environment. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109974
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Department of Earth Sciences, University of Ottawa, 25 Templeton Street, Ottawa, ON K1N6N5, Canada; GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Wischhofstr. 1-3, Kiel, 24148, Germany; Institut für Geologie und Paläontologie, Westfälische Wilhelms-Universität, Corrensstraße 24, Münster, 48149, Germany
Recommended Citation:
Diekrup D.,Hannington M.D.,Strauss H.,et al. Decoupling of Neoarchean sulfur sources recorded in Algoma-type banded iron formation[J]. Earth and Planetary Science Letters,2018-01-01,489