This thesis discusses improved petrogenetic model of Middle Dnipro Archean craton. The Middle Dnipro craton comprises typical for Precambrian shields rock associations, which are distinguished as structural-formational complexes found within the Ukrainian Shield. Among them are Slavgorod charnockite-granulitic, Auly plagiogranite-amphibolitic, Middle Dnipro tonalite-greenstone, Krivyy Rig - Bilozerka terrigenous-chemogenic and plutonic of two-feldspar granitoids ones. It is established, that the whole set of above mentioned complexes is a reliable diagnostic feature for ancient cratons of similar type. Beside Slavgorod block, associations of granulitic complex are distributed to the west of this area and as some fragments found in other blocks, outcropped on both banks of Dnipro River - within Bashmachka and Dibrovo villages, Rybalsky open pit and nearby Zaporizhzhia. For the first time it is defined, that protolyths of pyroxene crystalloschists and amphibolites are represented by magmatic rocks of basic and intermediate composition with high alkalinity, and sometimes by depositions of volcanogenic-sedimentary and sedimentary origin. Primary granulitic mineral paragenesises were formed at temperature reaching 800-835 °С, and pressure - 7 Kbar. Superimposed diaphthoritic alterations (temperature Т=650-745 °С and pressure Р=4-6 Kbar), that correspond to high-temperature amphibolite facies, are widely occurred and associated with Auly complex metamorphism. Protolyths of supercrustal formations of Auly complex are represented by igneous rocks; sometimes depositions of volcanogenic-sedimentary origin are also found. For the first time it is established, that magmatic rocks can be subdivided into two petrogeochemical groups of: 1) basic (amphibolites) and 2) intermediate and acid (crystalloschists and plagiogneisses) compositions for which separate magmatic sources, that are not connected by single process of differentiation, are supposed. Volcanic activity was distributed over the whole territory of Middle Dnipro area, unlike the subsequent in time "greenstone" magmatism localised within the limits of trough-like depressions. Metamorphic paragenesises of Auly suites are formed at Т=640-735 °С and Р=5-8 Kbar that corresponds to high-temperature amphibolite facies. Fine-grained gneiss-similar plagiogranites, which form bed-like and vein bodies, are the products of partial anatexis melting of supercrustal plagiogneisses at the PT-conditions mentioned above. Slavgorod and Auly complexes were formed at specific conditions of early Precambrian small-cellular mantle convection at manifestation of micro-and meso-plume activity. In time, they gradually evolved into the processes with parameters similar to those of current plate tectonics. Greenstone structures are mostly comprized by volcanogenic and plutonic rocks of komatiite, tholeite and calsic-alkaline suites which were formed as common homodromous series under the influence of mantle plume. Besides early defined geological sections of the same type found in different greenstone structures, certain variations in volume and/or composition of associations of different series are revealed. This fact indicates on the existence of different magmatic chambers, being the source of lava supply for different geological structures. They were separate, satellite-like in relation to common plume source, and different as to the course of their magmatic differentiation. High-titanum basalts and dolerites, being the products of the most differentiated tholeiitic magmas, were discovered in Sura Greenstone Belt. The ferro-basalts and ferro-gabbros are proved to be present in Sofiivka Greenstone Belt. Geological section of every belt, that are formed as a result of different characteristics of volcanic activities, have their own stratigraphic features manifested in different suites and subsuites present. Plagiogranite magmatism, which has occurred all over the Middle Dnipro area at about 3,0 Ga, is represented by ТТG association typical for ancient cratons. Massifs of plagioclase granitoids has resulted into migmatization of Auly and Slavgorod complex, zonal metamorphism of associations of greenstone belts. As intermediate- and long-term prospects, discovery of diamond-bearing kimberlites and lamproites might be predicted to be done within Middle Dnipro craton, and most likely, within the area of distribution of Slavgorod complex association. Among nonconventional sources of diamonds could be mentioned komatiites and camptonites which analogues are accordingly known in Dachine area (Guiana Shield) and Michipicoten greenstone belt (Superior craton)
