GEOCHEMICAL SIGNS OF CONCENTRATION AND FEATURES BEHAVIOUR OF GOLD AT REGIONAL METAMORPHISM (ON THE EXAMPLE OF THE UKRAINIAN SHIELD)
The paper contains the results of valuation of the basic geochemical characteristics of gold concentration is some regional-MeTaMorphogenic complexes of the world and Ukrainian shield. According to these results it turns out that an increased concentration of gold in that places first of all depends orthorocks of basic composition, which had been metamorphic in conditions of greenshist and aMphibolitic facies, as well as with quartz phyllites and breeds of an iron-siliceous formation. The factor analysis that is based on geochemical characteristics has helped to find that there are two major factors of metamorphic thicknesses formation on Ukrainian shield and due to their gold concentration, which are defined by their paleolithologic composition that has been formed in different conditions - such as in conditions of compression at a collision stage and in conditions of rift-valley zone. With the first factor are connected redistribution and local accumulation of gold in keratophyres and metabasic formations. With the second factor is connected shows a high accumulation of initial concentration of gold and coherent chemical elements at forming primary iron-siliceous formations and ultrabasic rocks.