TY JOUR TI Oceanic manganese accumulation in the light of historical tectonics KW manganese accumulation KW sea water origin KW formation of the Early Proterozoic manganese ore deposits. JO Russian Journal of Earth Sciences AU Bazilevskaya, E.S. AU Pushcharovskiy, Y.M. PY 1998 IS 1 PB Geophysical Center of the Russian Academy of Sciences