THE TECHNIQUE DECRYPTION OF FORMING PROCESSES PRECAMBRIAN GOLD-ORE SYSTEMS OF THE UKRAINIAN SHIELD
Journal Title: Вісник Одеського національного університету. Географічні та геологічні науки - Year 2015, Vol 20, Issue 2
Abstract
Purpose. The purpose of this paper is to substantiate that for multistage decoding of the genesis of gold deposits of the Ukrainian shield and their genetic classification geological-genetic method of interpretation of geological information at these sites, with a consistent overlay different geological conditions (the superposition principle) should be applied. Data & Methods. Materials preliminary forecast studies, inclusive works of authors, and the results of quantitative estimation, analysis and interpretation of the main factors, signs and criteria for gold mineralization of Ukrainian shield were used on paper. Thepaper analyzed a of the common thermodynamic features of existing Precambrian goldore systems of the Ukrainian shield with certain boundary conditions on which basis geological-genetic classification of gold-ore objects was build, and calculations of the number of possible multistage geological-genetic models using the basic principles of mathematical combinatorics. Finding. Method of geologic-genetic interpretation of geological information for decryption the peculiarities of formation of gold-ore systems of Ukrainian Shield has been proposed. At first, it includes the construction of simple geologic-genetic models. There are 11 models. Simple models are characterized by hierarchically lined up boundary conditions: the energy characteristics, origin, genesis and paragenesis. Then offered their superposition (consistent imposition) on possible combinations of different geological conditions. This allows you to build multistage gold system models. Results. Mathematical calculations based on combinatorics, showed that the number of possible combinations of 11 simple geological-genetic models (supergene, sedimentation, greenshist, amphibolite and granulite facies of regional metamorphism, ultrametamorphic-magmatic, pegmatitic, greisen-albitites stages and low-, middle- and high-temperature hydrothermalitic stages), and their superposition to the conditions of the Ukrainian shield , creates 550 combined models of gold systems. These combinations of gold-ore systems can be used as a basis for forecasting real gold deposits.
Authors and Affiliations
O. V. Dragomyretskyy, V. M. Kadurin
Keywords
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