TY JOUR TI Principal Component Analysis for Geochemical Data Analysis and Chemical Elements Associations of Prospective Kolumbe Area (Kema Terrain, Sikhote-Alin Folded Belt) KW volcanic belts KW machine learning KW geological mapping KW principal component analysis KW exploration geochemistry JO Russian Journal of Earth Sciences AU Shevyrev, S.L. AU Boriskina, N.G. AU Ivin, V.V. PY 2024 IS 24 PB Geophysical Center of the Russian Academy of Sciences