TY JOUR TI On the contribution of basic and ultrabasic rocks in the accumulation of the products of volcanic and hydrothermal activity in the Balygychan-Sugoi Trough NE Russia KW basic and ultrabasic rocks KW volcanic and hydrothermal activity KW Balygychan--Sugoi Trough. JO Russian Journal of Earth Sciences AU Filimonova, L.G. AU Chugaev, A.V. PY 2002 IS 4 PB Geophysical Center of the Russian Academy of Sciences