№77-8
Structural factors controlling ore-bearing metasomatites of the Middle Dnieper megablock of the Ukrainian shield
M. Ruzina1, I. Zhiltsova1, Y. Dementieva1, M. Malova2, A. Loktev3
1National Technical University "Dnipro Polytechnic", Dnipro, Ukraine
2LLC Geological company "Geonix", Dnipro, Ukraine
3LLC "Institute of Geology", Kyiv, Ukraine
Coll.res.pap.nat.min.univ. 2024, 77:84–93
Full text (PDF)
https://doi.org/10.33271/crpnmu/77.084
ABSTRACT
Purpose. Determination of the patterns of structural control of metasomatic formations with a complex composition of mineralization to substantiate the most promising areas for the placement of ore formations of hydrothermal-metasomatic genesis.
Methods. To substantiate the patterns of spatial distribution of ore-bearing metasomatite formations within the Middle Dnieper megablock of the Ukrainian Shield, a graphic comparison of metasomatism sites was carried out with maps of deep fault systems identified in accordance with the rotation hypothesis of K.F. Tyapkin. In accordance with the sequence of system-hierarchical subordination of structural control elements a comparison of metasomatism sites with fault systems was carried out on maps at scales 1:1000000, 1:500000, 1:200000 and 1:50000.
To determine the material composition of metasomatic formations, petrographic, mineragraphic and mineralogical research methods were used.
Findings. Structural and tectonic patterns of control of ore-bearing metasomatites by deep fault systems within the Middle Dnieper megablock have been established. The most productive systems of deep faults in terms of ore-mineralization control have been identified. The material composition of metasomatic formations that are promising for the mineralization of precious metals is characterized. The ore-controlling role of deep fault intersection in the formation of polychronous ore-bearing metasomatic formations is substantiated.
The originality. The factors of structural-tectonic control of ore-bearing metasomatite formations by deep fault systems within the Middle Dnieper megablock are substantiated and the spatial connection of telescoped metasomatic formations with complex mineralization with deepfaultsintersection is determined.
Practical implementation. The most promising areas of distribution of metasomatic ore-bearing formations of deep fault zones have been identified for metallogenic prediction.
Keywords: metasomatites, faults, control factors, petrographic composition, subsidence, Ukrainian Shield.
References
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