V.O. Privalov
L.S. Osmachko
O.M. Ponomarenko
V.G. Verkhovtsev
V.V. Ogar
Affiliation:
M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of the NAS of Ukraine
Project: Scientific book
Year: 2020
Publisher: PH "Naukova Dumka"
Pages: 169
DOI:
ISBN: 978-966-00-1754-2
Language: Ukrainian
How to Cite:
Privalov, V.O., Osmachko, L.S., Ponomarenko, O.M. (2020). Geodynamic Formation Conditions for Precambrian Structural and Compositional Complexes of the Ukrainian Shield. Kyiv, Naukova Dumka. 169 p. [in Ukraine].
Abstract:
A synthetic study has been made to identify principal geodynamic events that affected the territory of the Ukrainian Shield during the Precambrian. In particular, certain geodynamic conditions are reconstructed for development of Kryvyi Rih-Krupetsk fore-arc basin, synkinematic magmatism of several large intrusive systems and plutons (at the time boundary of 2.06–1.97 Ga and 1.80–1.74 Ga). It is demonstrated that the formation of structural plans of megablock and suture zone patterns of the Ukrainian shield took place during several stages of structural and compositional transformations of the crystalline basement under the influence of the prevailing strike-slip stress regimes, which led to the emergence of local releasing and restraining jogs. The most significant concentrations of mineral resources are localized in areas that served as strain shadows of the Paleoproterozoic shear zones. The local dilatant sites acted as pumps, governing the reaction of fluid transport from hosting rock along the pathways of high permeability. A larger picture of fluid circulation requires a cyclic infiltration regime in which the transition from ductile to brittle deformation regimes undoubtedly influenced the rates of metasomatic zoning and localization of epigenetic mineralization.
Intended for geoscientists and practicing geologists who research the Precambrian of the Ukrainian Schield.
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