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DOI | 10.1038/s41561-019-0372-0 |
Hydrogeological constraints on the formation of Palaeoproterozoic banded iron formations | |
Robbins, Leslie J.1,8; Funk, Sean P.1; Flynn, Shannon L.2; Warchola, Tyler J.1; Li, Zhiquan1,3,4; Lalonde, Stefan V.5; Rostron, Benjamin J.1; Smith, Albertus J. B.6,7; Beukes, Nicolas J.6,7; de Kock, Michiel O.6,7; Heaman, Larry M.1; Alessi, Daniel S.1; Konhauser, Kurt O.1 | |
2019-07-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:7页码:558-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; England; Peoples R China; France; South Africa; USA |
英文摘要 | Banded iron formations are critical to track changes in Archaean to Palaeoproterozoic ocean chemistry, with deposition triggered by water column iron oxidation. Recently, however, it was suggested that reduced iron minerals were the primary precipitates, and these were subsequently oxidized by oxygen-bearing groundwater. If true, this would cast doubt on our understanding of how banded iron formations were deposited and their ability to record early ocean chemistry. Here we present a hydrogeological box model, based on the approximately 2.5 billion year old Hamersley Basin of Western Australia, developed to evaluate the plausibility of secondary iron oxidation. The box model calculates the time required for groundwater to flux enough oxygen through the basin to oxidize a given amount of ferrous iron. Less than 9% of nearly four million model iterations returned oxidation times less than the age of the basin. Successful simulations required simultaneously steep hydraulic gradients, high permeability and elevated oxygen concentrations. Our simulations show that the postdepositional oxidation of large banded iron formations is unlikely, except on a limited scale (that is, during secondary ore formation), and that oxidized iron phases were probably the precursor to large Palaeoproterozoic banded iron formations. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000473104300014 |
WOS关键词 | RARE-EARTH-ELEMENT ; FLUID-FLOW ; TRANSVAAL SUPERGROUP ; HAMERSLEY BASIN ; OXIDATION ; HEMATITE ; ORIGIN ; GREENALITE ; REDUCTION ; PETROLOGY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184809 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB, Canada; 2.Newcastle Univ, Sch Nat & Environm Sci, Newcastle Upon Tyne, Tyne & Wear, England; 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing, Peoples R China; 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing, Peoples R China; 5.European Inst Marine Studies, CNRS Lab Geosci Ocean UMR6538, Technopole Brest Iroise, Plouzane, France; 6.Univ Johannesburg, Dept Geol, Paleoproterozo Mineralizat Res Grp, Johannesburg, South Africa; 7.Univ Johannesburg, Dept Geol, Natl Res Fdn Ctr Excellence Integrated Mineral &, Dept Sci & Technol, Johannesburg, South Africa; 8.Yale Univ, Dept Geol & Geophys, New Haven, CT 06520 USA |
推荐引用方式 GB/T 7714 | Robbins, Leslie J.,Funk, Sean P.,Flynn, Shannon L.,et al. Hydrogeological constraints on the formation of Palaeoproterozoic banded iron formations[J]. NATURE GEOSCIENCE,2019,12(7):558-+. |
APA | Robbins, Leslie J..,Funk, Sean P..,Flynn, Shannon L..,Warchola, Tyler J..,Li, Zhiquan.,...&Konhauser, Kurt O..(2019).Hydrogeological constraints on the formation of Palaeoproterozoic banded iron formations.NATURE GEOSCIENCE,12(7),558-+. |
MLA | Robbins, Leslie J.,et al."Hydrogeological constraints on the formation of Palaeoproterozoic banded iron formations".NATURE GEOSCIENCE 12.7(2019):558-+. |
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