Metamorphic and metasomatic complexes of the Ukrainian Shield

Six unstratified metamorphic and seven metasomatic complexes were described in the reference sections along the Berda, Mokraya Volnovakha, and Kalmius rivers, identified by the author's methodology. The age of the complexes is from the Archean to Cenozoic. The stability of the mapping and indicator features of these complexes in the study area and in other areas of the Ukrainian Shield has been documented and based on a large statistical material. All complexes are reduced into a single age scheme. The correctness of the structural constructions was verified by the results of isotope-geochronological studies. Observations show that these metamorphic rocks are formed mainly not from sedimentary, but from earlier metamorphic, less often - metasomatic rocks. It is shown that not only stratified Precambrian formations, but also some previously distinguished intrusive massifs are absent in the studied sections. Schemes of tectonic movements of collisional stages of Ukrainian development are constructed. The results of the work are proposed to improve the methodology of geological survey, to improve the legends of the geological maps of the territory and to strengthen their prognostic ability for minerals.