GEOCHEMISTRY OF THE METACARBONATE ROCKS O F THE CISOLKHONJE AND THE OLKHON ICELAND (WESTERN BAIKAL REGION)

The distribution of major and 12 trace elements in marbles, calciphyre s and carbonate-silicate schists of the Cisol'khonje and the Ol'khon I celand metamorphic complex is studied. The enrichment of carbonate roc ks of the Ol'khon series with graphite, Cr, V, Zn and that of Anga ser ies - with Mn, P, F proves that the former accumulated at the reducing conditions whereas the latter at oxidising ones. In the Ol'khon serie s where the granitisation is developed intensively the Sr content in c alcite bearing marbles was found to increase up to 0.2-0.8% near the m igmatitic zone. This could be resulted from the strontium loss during the final stage of granitisation accompanied by the pressure decrease.