%0 Journal Article %T Surface analogues of "grey gneiss'' among the Archaean rocks in the Kola Superdeep Borehole experience from petrologic-geochemical modelling of lower crust composition and conditions of formation of tonalite-trondhjemite rocks %A Vetrin, V.R. %A Turkina, O.M. %A Nordgulen, O.. %K Archaean rocks, Kola Superdeep Borehole, types of plagiogneiss. %J Russian Journal of Earth Sciences %D 2001 %N 3 %P 33 %I Geophysical Center of the Russian Academy of Sciences