DOI: 10.1002/2017JG004144
Scopus记录号: 2-s2.0-85044267051
论文题名: Productivity Contribution of Paleozoic Woodlands to the Formation of Shale-Hosted Massive Sulfide Deposits in the Iberian Pyrite Belt (Tharsis, Spain)
作者: Fernández-Remolar D.C. ; Harir M. ; Carrizo D. ; Schmitt-Kopplin P. ; Amils R.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期: 3 起始页码: 1017
结束页码: 1040
语种: 英语
英文关键词: biogeochemistry
; biomineralization
; chemosynthetic bacteria
; Devonian woodlands
; hydrothermal systems
; Iberian Pyrite Belt
Scopus关键词: anoxic conditions
; antimicrobial activity
; bacterium
; biogeochemistry
; biomineralization
; black shale
; catastrophic event
; community structure
; Devonian
; hydrothermal activity
; microbial activity
; organic matter
; oxidation
; paleobiology
; paleoecology
; Paleozoic
; phytochemistry
; rainforest
; suboxic conditions
; woodland
; Amazonia
; Congo
; Iberian Pyrite Belt
英文摘要: The geological materials produced during catastrophic and destructive events are an essential source of paleobiological knowledge. The paleobiological information recorded by such events can be rich in information on the size, diversity, and structure of paleocommunities. In this regard, the geobiological study of late Devonian organic matter sampled in Tharsis (Iberian Pyrite Belt) provided some new insights into a Paleozoic woodland community, which was recorded as massive sulfides and black shale deposits affected by a catastrophic event. Sample analysis using TOF-SIMS (Time of Flight Secondary Ion Mass Spectrometer), and complemented by GC/MS (Gas Chromatrograph/Mass Spectrometer) identified organic compounds showing a very distinct distribution in the rock. While phytochemical compounds occur homogeneously in the sample matrix that is composed of black shale, the microbial-derived organics are more abundant in the sulfide nodules. The cooccurrence of sulfur bacteria compounds and the overwhelming presence of phytochemicals provide support for the hypothesis that the formation of the massive sulfides resulted from a high rate of vegetal debris production and its oxidation through sulfate reduction under suboxic to anoxic conditions. A continuous supply of iron from hydrothermal activity coupled with microbial activity was strictly necessary to produce this massive orebody. A rough estimate of the woodland biomass was made possible by accounting for the microbial sulfur production activity recorded in the metallic sulfide. As a result, the biomass size of the late Devonian woodland community was comparable to modern woodlands like the Amazon or Congo rainforests. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114408
Appears in Collections: 气候减缓与适应
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作者单位: Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Luleå, Sweden; Research Unit Analytical Biogeochemistry, Department of Environmental Sciences, Helmholtz Zentrum München, Neuherberg, Germany; Centro de Astrobiología (INTA-CSIC), Madrid, Spain; Centro de Biología Molecular Severo Ochoa, Universidad Autónoma de Madrid, Madrid, Spain
Recommended Citation:
Fernández-Remolar D.C.,Harir M.,Carrizo D.,et al. Productivity Contribution of Paleozoic Woodlands to the Formation of Shale-Hosted Massive Sulfide Deposits in the Iberian Pyrite Belt (Tharsis, Spain)[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(3)