IRON-MANGANESE FORMATIONS IN THE OF LAKE BAIKAL REGION
L.Z. Graninaa, V.D. Matsa, and M.A. Phedorinb,c
a Limnological Institute, Siberian Branch of the Russian Academy of Sciences, ul. Ulan-Batorskaya 3, Irkutsk, 664033 Russia
bInstitute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, prosp. Akad. Koptyuga 3, Novosibirsk, 630090, Russia
cNovosibirsk State University, prosp. Akad. Koptyuga 2, Novosibirsk, 630090, Russia
Keywords: Iron-manganese nodules, continental ores, phosphorites, bottom sediments, Baikal
Pages: 650-660
Abstract
This work is a review of the modern concepts of the accumulation of Fe and Mn in the Baikal bottom sediments and the regularities of formation of iron-manganese (including phosphate-bearing) nodules in the lake. Special attention is given to the probable participation of hydrothermal water in this process and the genesis of ancient nodules deeply buried in the Baikal sediments. The possible relationship between the shore ores and the nodules in the bottom sediments in the adjacent Baikal regions has been first shown.
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