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Terrestrial radioisotopes as paleoenvironmental proxies in sedimentary formations

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Abstract

The presence of anomalous terrestrial radioisotopes must be suspected in black shale-hosted manganese ore deposits, based on high organic matter content, which is useful tool in genetic, among them paleoenvironmental investigations. Our work aims at the characterization of the paleoredox conditions of the Úrkút Manganese Formation based on comparison of terrestrial radioisotopes and selected element ratios. Paleoredox indicators were estimated on U/Th, δU, Ni/Co, V/Cr, V/(V + Ni) and Ce*. The results of paleoredox indicator element ratios show, that these methods must be used with caution (microbial selective element enrichments, mobilizations), and the complex interpretation using mineralogy and microtexture can be recommended.

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References

  1. Polgári M, Hein JR, Fórizs I, Vigh T, Szabó-Drubina M, Bíró L, Müller A, Tóth AL (2012) Microbial processes and the origin of the Úrkút manganese deposit, Hungary. Ore Geol Rev 47:87–109

    Article  Google Scholar 

  2. Vigh T, Kovács T, Somlai J, Kávási N, Polgári M, Bíró L (2013) Terrestrial radioisotopes in black shale hosted Mn-carbonate deposit (Úrkút, Hungary). Acta Geophys 61(4):831–847

    Article  Google Scholar 

  3. Polgári M, Hein JR, Tóth AL, Pál-Molnár E, Vigh T, Bíró L, Fintor K (2012) Microbial action formed Jurassic Mn-carbonate ore deposit in only few hundred years (Úrkút, Hungary). Geology 40(10):903–906

    Article  Google Scholar 

  4. Wignall PB, Myers KJ (1988) Interpreting the benthic oxygen levels in mudrocks: a new approach. Geology 16:452–455

    Article  CAS  Google Scholar 

  5. Rimmer S (2004) Geochemical paleoredox indicators in Devonian-Mississippian black shales, Central Appalachian Basin (USA). Chem Geol 206:373–391

    Article  CAS  Google Scholar 

  6. Yang B, Hu B, Bao Z, Zhang Z (2011) REE geochemical characteristics and depositional environment of the black shale-hosted Baiguoyuan Ag-V deposit in Xingshan, Hubei Province, China. J Rare Earths 29(5):499–506

    Article  Google Scholar 

  7. Jeans CV, Wray DS, Merriman RJ, Fisher MJ (2000) Volcanogenic clays in Jurassic and Cretaceous strata of England and the North Sea Basin. Clay Miner 35:25–55

    Article  CAS  Google Scholar 

  8. Macchour L, Philip J, Oudin JL (1994) Formation of laminite deposits in anaerobic-dysaerobic marine environments. Mar Geol 117:287–302

    Article  Google Scholar 

  9. Wedepohl KH (1971) Environmental influences on the chemical composition of shales and clays. In: Press F, Runcorn SK, Urey HC, Ahrens LH (eds) Physics and chemistry of the earth. Pergamon, Oxford

    Google Scholar 

  10. Polgári M, Hein JR, Németh T, Pál-Molnár E, Vigh T (2013) Celadonite and smectite formation in the Úrkút Mn-carbonate ore deposit (Hungary). Sediment Geol 294:157–163

    Article  Google Scholar 

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Acknowledgments

Lóránt Bíró's research was supported by the European Union and the State of Hungary, co-financed by the European Social Fund in the framework of TÁMOP 4.2.4. A/2-11-1-2012-0001 ‘National Excellence Program’.

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Correspondence to Márta Polgári.

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Bíró, L., Polgári, M., M. Tóth, T. et al. Terrestrial radioisotopes as paleoenvironmental proxies in sedimentary formations. J Radioanal Nucl Chem 306, 289–293 (2015). https://doi.org/10.1007/s10967-014-3861-z

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  • DOI: https://doi.org/10.1007/s10967-014-3861-z

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