气候变化领域集成服务门户(CCPortal): Mercury spikes at the Devonian-Carboniferous boundary in the eastern part of the Rhenohercynian Zone (central Europe) and in the South China Block

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DOI	10.1016/j.palaeo.2019.05.043
	Mercury spikes at the Devonian-Carboniferous boundary in the eastern part of the Rhenohercynian Zone (central Europe) and in the South China Block
	Kalvoda J.; Kumpan T.; Qie W.; Frýda J.; Bábek O.
发表日期	2019
ISSN	0031-0182
卷号	531
英文摘要	Mercury (Hg) chemostratigraphy is an efficient tool for tracing distal volcanism, as suggested in many recent studies. In our research, we focused on Hg and other trace element contents in two Devonian-Carboniferous boundary sections from two different and spatially distant areas. The Lesní lom section (Czech Republic) was located in the south-eastern part of the Laurussia plate and the Duli (Guangxi, China) section in the South China Plate. In both studied sections, the highest Hg, Hg/Fexs or Hg/Al values occurred at the Devonian-Carboniferous boundary. In Lesní lom, organic matter remineralization was connected with origin of pyrite which sequestered a part of the Hg content. The decoupling of Hg and TOC within the Duli section strata and the significant correlation with Al and Fe may suggest that Hg is hosted primarily by clay particles, derived from the landmass into the marine realm. Mercury was also incorporated into pyrites but the poor correlation between Hg and TS (total sulfur) indicates a possible loss of S during oxygenation events. In the Lesní lom section, and partly in the Duli section, Fe and Mn redox cycling may have played an important role in sediment Hg content. Both sections were influenced by widespread hydrothermal and volcanic activity, indicated by positive Eu anomalies, MSI, Fe/Ti, Zr/Al2O3 and Ti/Al2O3 values. It remains to be clarified whether, besides the interplay of local magmatic activity and redox oscillations, there may have been some additional influence of the multi-phase Viluy Large Igneous Province, although its younger phase (364.4 ± 1.7 Ma) slightly precedes the Hg anomalies obtained. © 2019 Elsevier B.V.
英文关键词	Famennian-Tournaisian boundary; Hangenberg events; Hydrothermal activity; Trace element geochemistry; Volcanic activity
语种	英语
scopus关键词	chemostratigraphy; Devonian-Carboniferous boundary; Famennian; geochemistry; hydrothermal activity; mercury (element); organic matter; oxygenation; remineralization; Tournaisian; trace element; volcanism; Central Europe; China; Czech Republic; Guangxi Zhuangzu; South China Block
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150870
作者单位	Department of Geological Sciences, Masaryk University, Kotlářská 2, Brno, 611 37, Czech Republic; CAS Key Laboratory of Economic Stratigraphy and Palaeogeography, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing, 210008, China; Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Praha 6, Suchdol 165 21, Czech Republic; Czech Geological Survey, Klárov 3/131, Prague 1, 118 21, Czech Republic; Department of Geology, Palacký University, 17. listopadu 12, Olomouc, 772 00, Czech Republic
推荐引用方式 GB/T 7714	Kalvoda J.,Kumpan T.,Qie W.,et al. Mercury spikes at the Devonian-Carboniferous boundary in the eastern part of the Rhenohercynian Zone (central Europe) and in the South China Block[J],2019,531.
APA	Kalvoda J.,Kumpan T.,Qie W.,Frýda J.,&Bábek O..(2019).Mercury spikes at the Devonian-Carboniferous boundary in the eastern part of the Rhenohercynian Zone (central Europe) and in the South China Block.Palaeogeography, Palaeoclimatology, Palaeoecology,531.
MLA	Kalvoda J.,et al."Mercury spikes at the Devonian-Carboniferous boundary in the eastern part of the Rhenohercynian Zone (central Europe) and in the South China Block".Palaeogeography, Palaeoclimatology, Palaeoecology 531(2019).