Yu.S. Litvinenko1, L.V. Zakharikhina2

1EcoGeoLit Ltd., Moscow, 117447
2Research Geotechnological Centre, Far Eastern Branch of Russian Academy of Sciences,
Severo-Vostochnoe shosse, 30, Petropavlovsk-Kamchatsky, 683002, Russia

Soil provinces of Kamchatka peninsula were found on basis of differences in composition and age of volcanic ashes with surface organogenic horizons of soils formed in it. For the first time regional geochemical background of microelements in modern volcanic soils of Kamchatka was determined. The characteristics of the background are defined to a greater degree by a composition of volcanic ashes where soils were formed in. Geochemical specialization of soils formed in ashes of different composition is determined only by microelements which Clarkes increase from acidic rocks to base magmatic rocks. All Kamchatka soil provinces are characterized by a single-valued and stable copper specialization that more contrast developed in soils formed in pyroclastic deposits of an average and main composition. The quantity of excess elements in volcanic soils in accordance with their content in soils of continents increases in the row: acidic-middle-base soil underlying ashes. The quantity of deficient elements and degree of their shortage(lack) increase in a reverse direction. Multiplicative geochemical index was offered for identification of region volcanic soils formed in ashes of different composition.