globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12150
Scopus记录号: 2-s2.0-84944158964
论文题名:
A Paleoarchean coastal hydrothermal field inhabited by diverse microbial communities: The Strelley Pool Formation, Pilbara Craton, Western Australia
作者: Sugitani K.; Mimura K.; Takeuchi M.; Yamaguchi T.; Suzuki K.; Senda R.; Asahara Y.; Wallis S.; Van Kranendonk M.J.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2015
卷: 13, 期:6
起始页码: 522
结束页码: 545
语种: 英语
Scopus关键词: Archean ; carbonaceous chondrite ; energy resource ; film ; heavy metal ; hydrothermal alteration ; hydrothermal fluid ; microbial community ; microfossil ; outcrop ; physicochemical property ; rare earth element ; sandstone ; shallow water ; stromatolite ; Australia ; Pilbara Block ; Western Australia ; analysis ; ecosystem ; evolution ; fossil ; hydrothermal vent ; scanning electron microscopy ; sediment ; transmission electron microscopy ; ultrastructure ; Western Australia ; Biological Evolution ; Ecosystem ; Fossils ; Geologic Sediments ; Hydrothermal Vents ; Microscopy, Electron, Scanning ; Microscopy, Electron, Transmission ; Western Australia
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: The 3.4-Ga Strelley Pool Formation (SPF) at the informally named 'Waterfall Locality' in the Goldsworthy greenstone belt of the Pilbara Craton, Western Australia, provides deeper insights into ancient, shallow subaqueous to possibly subaerial ecosystems. Outcrops at this locality contain a thin (<3 m) unit of carbonaceous and non-carbonaceous cherts and silicified sandstones that were deposited in a shallow-water coastal environment, with hydrothermal activities, consistent with the previous studies. Carbonaceous, sulfide-rich massive black cherts with coniform structures up to 3 cm high are characterized by diverse rare earth elements (REE) signatures including enrichment of light [light rare earth elements (LREE)] or middle rare earth elements and by enrichment of heavy metals represented by Zn. The massive black cherts were likely deposited by mixing of hydrothermal and non-hydrothermal fluids. Coniform structures in the cherts are characterized by diffuse laminae composed of sulfide particles, suggesting that unlike stromatolites, they were formed dominantly through physico-chemical processes related to hydrothermal activity. The cherts yield microfossils identical to previously described carbonaceous films, small and large spheres, and lenticular microfossils. In addition, new morphological types such as clusters composed of large carbonaceous spheroids (20-40 μm across each) with fluffy or foam-like envelope are identified. Finely laminated carbonaceous cherts are devoid of heavy metals and characterized by the enrichment of LREE. This chert locally contains conical to domal structures characterized by truncation of laminae and trapping of detrital grains and is interpreted as siliceous stromatolite formed by very early or contemporaneous silicification of biomats with the contribution of silica-rich hydrothermal fluids. Biological affinities of described microfossils and microbes constructing siliceous stromatolites are under investigation. However, this study emphasizes how diverse the microbial community in Paleoarchean coastal hydrothermal environment was. We propose the diversity is at least partially due to the availability of various energy sources in this depositional environment including reducing chemicals and sunlight. © 2015 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85124
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作者单位: Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan; Australian Centre for Astrobiology, University of New South Wales, Sydney, NSW, Australia; School of Informatics and Sciences, Nagoya University, Nagoya, Japan; Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan; School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia; Australian Research Council Centre of Excellence for Core to Crust Fluid Systems, Sydney, NSW, Australia; Graduate School of Science, The University of Tokyo, Tokyo, Japan

Recommended Citation:
Sugitani K.,Mimura K.,Takeuchi M.,et al. A Paleoarchean coastal hydrothermal field inhabited by diverse microbial communities: The Strelley Pool Formation, Pilbara Craton, Western Australia[J]. Geobiology,2015-01-01,13(6)
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