TY JOUR TI Rare earth elements in rocks and minerals from alkaline plutons of the Kola Peninsula, NW Russia, as indicators of alkaline magma evolution KW rare-earth elements KW alkaline plutons KW alkaline magma evolution KW Kola Peninsula. JO Russian Journal of Earth Sciences AU Arzamastsev, A.A. AU Arzamastseva, L.V. AU Bea, F.. AU Montero, P.. PY 2002 IS 4 PB Geophysical Center of the Russian Academy of Sciences