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THEORY AND PRACTICE OF PRODUCTION RAW MATERIALS BASE
ArticleName
Accumulation of carbonate-manganese residual in the Baltic sea
ArticleAuthor
Emelyanov E. M.
ArticleAuthorData

E. M. Emelyanov, Chief Researcher, Professor, Doctor of Geological and Mineralogical Sciences, P. P. Shirshov Institute of Oceanology, e-mail: ioran@atlas.baltnet.ru.

Abstract
The downwarpings in the Baltic sea are the model, explaining the mechanism of accumulation of carbonate-oxide ores. Microlaminated silts of downwarpings contain about 10 % of Corg and 12.9 % of Mn. Oxided Fe-Mn ores (concretions and crusts) are accumulating on 20-155 m depth, carbonatemanganic ores on 200-450 m depth. Carbonate-manganic silts have been compared with ancient carbonatemanganese ores. The conclusion has been done that these ores have been formed in similar sedimentative conditions.
keywords
The Baltic sea, hydrosulfuric pools, manganese, iron, carbonate and oxide manganese ores, rhodochrosite.
References

1. Varentsov I. M., Blazhchishin A. I. Zhelezomargantsevye iskopaemye. Geologiya Baltiyskogo morya (Ferrimanganese fossils. Geology of the Baltic sea), Vilnius : Mokslas, 1976.
2. Emelyanov E. M. Barernye zony v okeane (Barrier zones in the ocean), Kaliningrad : Yantarnyy skaz, 1998.
3. Zhamoida V. A., Glasby G. G., Grigoriev A. G. et al. Distribution, morphology, composition and economic potential of ferromanganese concretions from the eastern Gulf of Finland. Zeitschrift für Angewandte Geologie, 2004.
4. Strakhov H. M. K teorii geokhimicheskogo protsessa v gumidnykh zonakh. Geokhimiya osadochnykh porod i rud (To the theory of the geochemical process in the humid zones. Geochemistry of the sedimentary rocks and ores), Moscow : Nauka, 1968.
5. Huckriede H. & Meischner D. Origin and environment of manganese-rich sediments within black-shale basins. Geoch. et Cosmochim. Acta, 1996, Vol. 60, No. 8.

Language of full-text
russian
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